team
Adolfo Speghini

Nanomaterials Research Group
Department of Biotechnology
University of Verona
Strada Le Grazie 15, Verona, Italy


+39 045 8027900

RESEARCH INTERESTS

  • Nanomaterials activated with luminescent lanthanide ions
  • Hybrid organic-inorganic nanostructures
  • Multifunctional nanomaterials for biotechnology and nanomedicine
  • Optical nanothermometry
  • Surface functionalization of inorganic nanoparticles
  • Nanoparticle-biomolecule interactions
  • Colloidal chemistry
  • Nanostructures for drug delivery

EDUCATION AND PROFESSIONAL EXPERIENCE

EDUCATION

2006 – Associate Professor, Inorganic Chemistry, University of Verona, Verona, Italy
2001 – 2004 Member of the Board of Directors of the University of Verona, Italy.
1997 – 2006 Researcher, Inorganic Chemistry, University of Verona, Verona, Italy
1994 – 1996 Postdoctoral fellowship, Chemical Sciences, University of Verona, Verona, Italy
1990 – 1992 PhD in Chemistry, University of Padova, Padova, Italy
1984 – 1988 Master Degree in Chemistry (Summa cum Laude), University of Padova, Padova, Italy

PROFESSIONAL EXPERIENCE

2013 – 2018 Departmental Responsible for Student Orientation
2012 – Association agreement with the Institute of Applied Physics “Nello Carrara”, Italian National Research Council, Florence, Italy
2012 – Member of the Board of Directors of the Science and Technology of Materials Italian Consortium, Florence, Italy
2012 – 2018 Chairman of the Academic Board of the PhD Course “Nanotechnology and Nanomaterials for Biomedical Applications”, University of Verona, Italy
2012 – 2014 Member of the Board of Directors of the Veneto Interuniversity Consortium for Nanotechnology, Venezia, Italy.
2006 – Associate Professor, Inorganic Chemistry, University of Verona, Verona, Italy

ITALIAN NATIONAL SCIENTIFIC HABILITATION

2017 Full Professor of Physical Chemistry
2013 Full Professor of Inorganic Chemistry

TEACHING ACTIVITIES

2017- Physical Chemistry (6 CFU), Bachelor’s degree in Biotechnology, University of Verona (Verona, Italy)
2014 – 2018 Chemistry of Nanomaterials (6 CFU), Master’s Degree in Science and Technology of Bio and Nanomaterials, University of Verona (Verona, Italy) and Ca’ Foscari University of Venice (Venice, Italy)
2001 – General and Inorganic Chemistry (9 CFU), Bachelor’s degree in Viticultural and Oenological Science and Technology, University of Verona (Verona, Italy)
2000 – 2003 Analytical Chemistry, Master’s Degree in Biotechnology, University of Verona (Verona, Italy)

COLLABORATIONS

Prof. Fiorenzo Vetrone, Institut National de la Recherche Scientifique, Université du Québec, Varennes, Canada.
Prof. Josè Garcia Solè and Prof. Daniel Jaque, Departamento Fisica de Materiales, Universidad Autonoma de Madrid, Madrid, Spain.
Prof. Dariusz Hreniak, Institute of Low Temperatures and Structure Research, Polish Academy of Sciences, Wroclaw, Poland.

ORGANIZATION OF INTERNATIONAL CONFERENCES

2015 (August) XXIII International Materials Research Congress, Symposium 6E. Luminescent Materials: Basic Phenomena and Applications (in Celebration of the International Year of Light), Cancun, Mexico (chair).
2012 (August) 8th International Conference on f-Elements (ICFE8), Udine, Italy (organizing committee member).
2006 (August) Fourth Italian-Korean Joint Meeting on Inorganic Chemistry (KIMIC IV), Malcesine, Verona, Italy (organizing committee member).

VISITING SCIENTIST (last 10 years)

2013 (October), 2015 (October), 2016 (May), 2017 (August and October) Université du Québec, Institut National de la Recherche Scientifique – Énergie, Matériaux et Télécommunications (INRS-EMT) (Varennes, QC, Canada). Host: Prof. Fiorenzo Vetrone.
2013 (September), 2014 (July), 2015 (August), 2017 (September), 2018 (September) Humboldt-Universität zu Berlin, Berlin, Germany. Host: Prof. Nicola Pinna (Teaching Staff Mobility).
2012 (May), 2014 (August), 2015 (August) Universidad Autonoma Metropolitana, Mexico City, Mexico. Host: Prof. Ulises Caldino.
2011 (November) Munster University, Germany. Host: Prof. Luisa De Cola.
2007 (June), 2010 (April),  2011 (October) Universidad Autonoma de Madrid, Madrid, Spain. Host: Prof. José Garcia Solé.
2007 (September), 2008 (October), 2009 (September), 2010 (September) Institute of Low Temperatures and Structural Research, Polish Academy of Sciences, Wroclaw, Poland. Host: Prof. Wieslaw Strek.
2007 (May, October), 2008 (November), 2009 (May, June) Concordia University, Montreal, Canada. Host: Prof. John Capobianco.

VISITING PROFESSOR

2012 (November) Université du Québec, Institut National de la Recherche Scientifique – Énergie, Matériaux et Télécommunications (INRS-EMT) (Varennes, QC, Canada). Host: Prof. Fiorenzo Vetrone.

INTERNATIONAL REVIEWER ACTIVITY

RESEARCH PROJECTS

2018 Evaluation of research proposals, Executive Government Agency of National Science Centre, Krakow, Poland
2018 Evaluation of research proposals, ERC Advanced Grant 2017, European Research Council (ERC), EU
2017 Evaluation of research proposals, ETH Zurich Research Commission, Zurich, Switzerland
2016 Evaluation of research proposals: “Exploratory Research Projects”, UEFISCDI Evaluation Process, Romanian Executive Agency for Higher Education, Research, Development and Innovation Funding, Bucharest, Romania
2016 Member of the Evaluation Panel (Engineering and Technology) of research projects, Fundação para a Ciência e a Tecnologia, I. P. (FCT), Portuguese Ministry of Science and Education, Lisbon, Portugal.
2015 Evaluation of research proposals, Executive Government Agency of National Science Centre, Krakow, Poland.
2015 Evaluation of funding proposals, Canada Foundation for Innovation – Fondation canadienne pour l’innovation, Ottawa, Canada.
2014 Evaluation of funding proposals (FIR2014) of the University of Catania, Italy.
2013 Evaluation of research projects Futuro in Ricerca 2013, Italian Ministry of Instruction, University and Research, Italy.
2013 Evaluation of research proposals, Research Grants Council, Hong Kong, China.
2012 Member of the Evaluation Panel (Physics) of research projects, Executive Agency for Higher Education, Research, Development and Innovation Funding, Bucarest, Romania.
2010 Evaluation of a postdoctoral research proposal, Estonian Science Foundation, Estonia.
2010 Evaluation of research projects FIRB (Futuro in Ricerca), Italian Ministry of Instruction, University and Research, Italy.

JOURNALS (selected)

American Chemical Society ACS Nano, ACS Applied Materials & Interfaces, ACS Biomaterials Science & Engineering, ACS Photonics, Biomacromolecules, Chemical Reviews, Chemistry of Materials, Crystal Growth & Design, Inorganic Chemistry, Journal of Physical Chemistry, Journal of the American Chemical Society, Langmuir, ACS Omega.
Royal Society of Chemistry Chemistry Communications, CrystEngComm, Dalton Transactions, Inorganic Chemistry Frontiers, Journal of Materials Chemistry, Nanoscale, Physical Chemistry Chemical Physics, RSC Advances, Materials Horizons.
Elsevier Advances in Colloid and Interface Science, Applied Surface Science, Biomaterials, Biosensors and Bioelectronics, Ceramics International, NanoToday, Journal of Luminescence, Journal of Solid State Chemistry, Optical Materials, Materials Chemistry and Physics, Sensors & Actuators: B. Chemical
Springer Applied Nanoscience, Applied Physics A: Materials Science & Processing, Applied Physics B: Lasers and Optics, Nanoscale Research Letters.
Wiley – ChemPubSoc Advanced Functional Materials, Advanced Materials, Chemistry – A European Journal, Chemistry – An Asian Journal, ChemPhysChem, ChemistrySelect, European Journal of Inorganic Chemistry

EDITORIAL BOARD

2018 – IET Nanobiotechnology, IET Digital Library (Associate Editor)
2017 – Advances in Materials Science and Engineering, Hindawi Publishing Corporation
2015 – Journal of Nanomaterials, Hindawi Publishing Corporation
2013 – Journal of Nanoparticle Research, Springer Science (Associate Editor)

INVITED TALKS/LECTURES

2018, October Asian Conference on Nanoscience and Nanotechnology, Quingdao, China, (Keynote).
2018, July International Conference on Energy, Materials and Photonics, EMP18, Montreal, Canada.
2017, October Invited Talk “Lanthanide activated alkaline-earth fluoride nanoparticles: biocompatible and multifunctional materials for nanomedicine”, National Institute of Scientific Research (INRS), University of Quebec, Varennes, Canada.
2017, August 7th International Conference on Nanoscience and Technology, (ChinaNANO), Beijing, China, (Keynote).
2016, October Materials Science & Technology 2016 (MS&T16) Conference, Symposium on “Nanomaterials Working in the Near-Infrared: Biomedical Applications”, Salt Lake City, Utah, USA.
2016, June 6th International Workshop on Photoluminescence in Rare-Earths: Photonic Materials and Devices (PRE’16), Greenville, South Carolina, USA.
2016, May Emerging Technologies: Communications, Microsystems, Optoelectronics, Sensors (ETCMOS) Conference, Montreal, Canada.
2014, August Symposium on “Lanthanide-Doped Materials”, International Materials Research Congress (IMRC), Cancun, Mexico.
2014, June 1st International Conference on “Fluorescent Up-converting Nanoparticles: a Platform for Energy and Biological Applications” (FUN-BIOENERGY), Torremolinos, Spain.
2013, October Materials Science & Technology 2013 (MS&T13) Conference, Symposium on “Optical Nanomaterials for Photonics/Biophotonics”, Montreal, Canada.
2013, May XIIIth International Krutyn Summer School 2013 – “Advanced photo- and electrically active molecular and nano-materials at the interface with living systems: challenges and promises for the future bio-medicine” , Krutyn, Poland.

SELECTED PUBLICATIONS (NANOMATERIALS)

BOOK CHAPTERS

Speghini, M. Pedroni, N. Zaccheroni and E. Rampazzo, Synthesis of upconverting nanomaterials: Designing the composition and the nanostructure, in Upconverting Nanomaterials, C. Altavilla Ed., CRC Press, Taylor & Francis Group, Boca Raton, FL, USA, 2016, pp. 37-68.

ARTICLES

(1) Dal Cortivo, G.; Wagner, G. E.; Cortelletti, P.; Das, K. M. P.; Zangger, K.; Speghini, A.; Dell’Orco, D.; Meyer, N. H. Luminescent and Paramagnetic Properties of Nanoparticles Shed Light on Their Interactions with Proteins. Sci. Rep. 2018, 8.

(2) Cortelletti, P.; Skripka, A.; Facciotti, C.; Pedroni, M.; Caputo, G.; Pinna, N.; Quintanilla, M.; Benayas, A.; Vetrone, F.; Speghini, A. Tuning the Sensitivity of Lanthanide-Activated NIR Nanothermometers in the Biological Windows. Nanoscale 2018, 10 (5), 2568–2576.

(3) Cortelletti, P.; Pedroni, M.; Boschi, F.; Pin, S.; Ghigna, P.; Canton, P.; Vetrone, F.; Speghini, A. Luminescence of Eu3+ Activated CaF2 and SrF2 Nanoparticles: Effect of the Particle Size and Codoping with Alkaline Ions. Cryst. Growth Des. 2018, 18 (2), 686–694.

(4) Srivastava, A. K.; Singh, A. K.; Kumari, N.; Yadav, R.; Gulino, A.; Speghini, A.; Nagarajan, R.; Mishra, L. Pyridyl Substituted 4-(1,3-Dioxo-1H,3H-Benzo[de]isoquinolin-2-Ylmethyl)-Benzamides with Aggregation Enhanced Emission and Multi-Stimuli-Responsive Properties. J. Lumin. 2017, 182.

(5) Pellegrino, A. L.; Cortelletti, P.; Pedroni, M.; Speghini, A.; Malandrino, G. Nanostructured CaF2:Ln3+ (Ln3+ = Yb3+/Er3+, Yb3+/Tm3+) Thin Films: MOCVD Fabrication and Their Upconversion Properties. Adv. Mater. Interfaces 2017, 1700245.

(6) Pedroni, M.; Cortelletti, P.; Cantarelli, I. X.; Pinna, N.; Canton, P.; Quintanilla, M.; Vetrone, F.; Speghini, A. Colloidal Nanothermometers Based on Neodymium Doped Alkaline-Earth Fluorides in the First and Second Biological Windows. Sensors Actuators, B Chem. 2017, 250, 147–155.

(7) Morgese, G.; Dolcet, P.; Feis, A.; Gellini, C.; Gialanella, S.; Speghini, A.; Badocco, D.; Pastore, P.; Casarin, M.; Gross, S. Room-Temperature Crystallization of CuS Nanostructures for Photothermal Applications through a Nanoreactor Approach. Eur. J. Inorg. Chem. 2017, 2017 (20).

(8) Labrador-Paez, L.; Pedroni, M.; Smits, K.; Speghini, A.; Jaque, F.; Garcia-Sole, J.; Jaque, D.; Haro-Gonzalez, P. Core-Shell Engineering to Enhance the Spectral Stability of Heterogeneous Luminescent Nanofluids. Part. Part. Syst. Charact. 2017, 34 (12).

(9) Cortelletti, P.; Facciotti, C.; Cantarelli, I. X.; Canton, P.; Quintanilla, M.; Vetrone, F.; Speghini, A.; Pedroni, M. Nd3+ Activated CaF2 NPs as Colloidal Nanothermometers in the Biological Window. Opt. Mater. (Amst). 2017, 68, 29–34.

(10)    Catalano, M. R.; Pellegrino, A. L.; Rossi, P.; Paoli, P.; Cortelletti, P.; Pedroni, M.; Speghini, A.; Malandrino, G. Upconverting Er3+,Yb3+ Activated Beta-NaYF4 Thin Films: A Solution Route Using a Novel Sodium Beta-Diketonate Polyether Adduct. New J. Chem. 2017, 41 (12), 4771–4775.

(11)    Zanzoni, S.; Pedroni, M.; D’Onofrio, M.; Speghini, A.; Assfalg, M. Paramagnetic Nanoparticles Leave Their Mark on Nuclear Spins of Transiently Adsorbed Proteins. J. Am. Chem. Soc. 2016, 138 (1).

(12)    Portioli, C.; Pedroni, M.; Benati, D.; Donini, M.; Bonafede, R.; Mariotti, R.; Perbellini, L.; Cerpelloni, M.; Dusi, S.; Speghini, A.; et al. Citrate-Stabilized Lanthanide-Doped Nanoparticles: Brain Penetration and Interaction with Immune Cells and Neurons. Nanomedicine Nanotechnology, Biol. Med. 2016, 11 (23).

(13)    Marciniak, L.; Hreniak, D.; Strek, W.; Piccinelli, F.; Speghini, A.; Bettinelli, M.; Miritello, M.; Lo Savio, R.; Cardile, R.; Priolo, F. Spectroscopic and Structural Properties of Polycrystalline Y2Si2O7 Doped with Er3+. J. Lumin. 2016, 170, 614–618.

(14)    Zanzoni, S.; Assfalg, M.; Singh, R. K.; Pedroni, M.; Speghini, A.; Fushman, D.; D’Onofrio, M. Ubiquitin-Nanoparticle Interactions by Solution NMR Spectroscopy. Protein Sci. 2015, 24, 25.

(15)    Villa, I.; Vedda, A.; Cantarelli, I. X.; Pedroni, M.; Piccinelli, F.; Bettinelli, M.; Speghini, A.; Quintanilla, M.; Vetrone, F.; Rocha, U.; et al. 1.3 Μm Emitting SrF2:Nd3+ Nanoparticles for High Contrast in Vivo Imaging in the Second Biological Window. Nano Res. 2015, 8 (2), 649–665.

(16)    Smecca, E.; Tudisco, C.; Giuffrida, A. E.; Catalano, M. R.; Speghini, A.; Malandrino, G.; Condorelli, G. G. Spatially Confined Functionalization of Transparent NiO Thin Films with a Luminescent (1,10-Phenanthroline)tris(2-Thenoyltrifluoroacetonato)europium Monolayer. Eur. J. Inorg. Chem. 2015, 2015 (7).

(17)    Rodriguez-Sevilla, P.; Rodriguez-Rodriguez, H.; Pedroni, M.; Speghini, A.; Bettinelli, M.; Sole, J. G.; Jaque, D.; Haro-Gonzalez, P. Assessing Single Upconverting Nanoparticle Luminescence by Optical Tweezers. Nano Lett. 2015, 15 (8), 5068–5074.

(18)    Rodriguez-Rodriguez, H.; Sevilla, P. R.; Rodriguez, E. M.; Ortgies, D. H.; Pedroni, M.; Speghini, A.; Bettinelli, M.; Jaque, D.; Haro-Gonzalez, P. Enhancing Optical Forces on Fluorescent Up-Converting Nanoparticles by Surface Charge Tailoring. Small 2015, 11 (13), 1555–1561.

(19)    Prodi, L.; Rampazzo, E.; Rastrelli, F.; Speghini, A.; Zaccheroni, N. Imaging Agents Based on Lanthanide Doped Nanoparticles. Chem. Soc. Rev. 2015, 44 (14), 4922–4952.

(20)    Millesi, S.; Lo Nigro, R.; Pedroni, M.; Speghini, A.; Gulino, A. Photoexcited Porphyrins Functionalizing TiO2 and SnO2 Nanocrystals. J. Phys. Chem. C 2015, 119 (41), 23743–23751.

(21)    Meza-Rocha, A. N.; Huerta, E. F.; Caldiño, U.; Carmona-Téllez, S.; Bettinelli, M.; Speghini, A.; Pelli, S.; Righini, G. C.; Falcony, C. Dependence of the up-Conversion Emission of Li+ Co-Doped Y2O3:Er3+ Films with Dopant Concentration. J. Lumin. 2015, 167, 352–359.

(22)    Dolcet, P.; Maurizio, C.; Casarin, M.; Pandolfo, L.; Gialanella, S.; Badocco, D.; Pastore, P.; Speghini, A.; Gross, S. An Effective Two-Emulsion Approach to the Synthesis of Doped ZnS Crystalline Nanostructures. Eur. J. Inorg. Chem. 2015, 2015 (4), 706–714.

(23)    Dolcet, P.; Mambrini, A.; Pedroni, M.; Speghini, A.; Gialanella, S.; Casarin, M.; Gross, S. Room Temperature Crystallization of Highly Luminescent Lanthanide-Doped CaF2 in Nanosized Droplets: First Example of the Synthesis of Metal Halogenide in Miniemulsion with Effective Doping and Size Control. RSC Adv. 2015, 5 (21), 16302–16310.

(24)    Del Rosal, B.; Pérez-Delgado, A.; Misiak, M.; Bednarkiewicz, A.; Vanetsev, A. S.; Orlovskii, Y.; Jovanović, D. J.; Dramićanin, M. D.; Rocha, U.; Upendra Kumar, K.; et al. Neodymium-Doped Nanoparticles for Infrared Fluorescence Bioimaging: The Role of the Host. J. Appl. Phys. 2015, 118 (14).

(25)    Quintanilla, M.; Cantarelli, I. X. X.; Pedroni, M.; Speghini, A.; Vetrone, F. Intense Ultraviolet Upconversion in Water Dispersible SrF2:Tm3+,Yb3+nanoparticles: The Effect of the Environment on Light Emissions. J. Mater. Chem. C 2015, 3 (13), 3108–3113.

(26)    Leto, A.; Piccinelli, F.; Pezzotti, G.; Speghini, A.; Nodari, L.; Polizzi, S.; Bettinelli, M. Single Crystal and Nanocrystalline Pr3+ Doped LuPO4: Synthesis, Structural Characterization, Photo- and Cathodoluminescence. Mater. Res. Bull. 2014, 51, 24–27.

(27)    Cantarelli, I. X.; Pedroni, M.; Piccinelli, F.; Marzola, P.; Boschi, F.; Conti, G.; Sbarbati, A.; Bernardi, P.; Mosconi, E.; Perbellini, L.; et al. Multifunctional Nanoprobes Based on Upconverting Lanthanide Doped CaF2: Towards Biocompatible Materials for Biomedical Imaging. Biomater. Sci. 2014, 2 (9), 1158–1171.

(28)    Butturini, E.; Dolcet, P.; Casarin, M.; Speghini, A.; Pedroni, M.; Benetti, F.; Motta, A.; Badocco, D.; Pastore, P.; Diodati, S.; et al. Simple, Common but Functional: Biocompatible and Luminescent Rare-Earth Doped Magnesium and Calcium Hydroxides from Miniemulsion. J. Mater. Chem. B 2014, 20 (38).

(29)    Barrera, E. W.; Pujol, M. C.; Carvajal, J. J.; Mateos, X.; Solé, R.; Massons, J.; Speghini, A.; Bettinelli, M.; Cascales, C.; Aguiló, M.; et al. Upconversion Emission in (Ln,Yb):KLu(WO<inf>4</inf>)<inf>2</inf> Nanocrystals for White Light Generation. J. Phys. Conf. Ser. 2014, 480 (1).

(30)    Barrera, E. W.; Pujol, M. C.; Carvajal, J. J.; Mateos, X.; Solé, R.; Massons, J.; Speghini, A.; Bettinelli, M.; Cascales, C.; Aguiló, M.; et al. White Light Upconversion in Yb-Sensitized (Tm, Ho)-Doped KLu(WO4)2 Nanocrystals: The Effect of Eu Incorporation. Phys. Chem. Chem. Phys. 2014, 16 (4), 1679–1686.

(31)    Whiffen, R. M. K.; Antic, Z.; Speghini, A.; Brik, M. G.; Bartova, B.; Bettinelli, M.; Dramicanin, M. D. Structural and Spectroscopic Studies of Eu3+ Doped Lu2O3-Gd2O3 Solid Solutions. Opt. Mater. (Amst). 2014, 36 (6), 1083–1091.

(32)    Simunekova, M.; Prodius, D.; Mereacre, V.; Schwendt, P.; Turta, C.; Bettinelli, M.; Speghini, A.; Lan, Y. H.; Anson, C. E.; Powell, A. K. Tetradecanuclear Lanthanide-Vanadium “nanochocolates”: Catalytically-Active Cationic Heteropolyoxovanadium Clusters. Rsc Adv. 2013, 3 (18), 6299–6304.

(33)    Pedroni, M.; Piccinelli, F.; Passuello, T.; Polizzi, S.; Ueda, J.; Haro-Gonzalez, P.; Maestro, L. M.; Jaque, D.; Garcia-Sole, J.; Bettinelli, M.; et al. Water (H2O and D2O) Dispersible NIR-to-NIR Upconverting Yb3+/Tm3+ Doped MF2 (M = Ca, Sr) Colloids: Influence of the Host Crystal. Cryst. Growth Des. 2013, 13 (11), 4906–4913.

(34)    Ozen, G.; Erdem, M.; Collins, J.; Bettinelli, M.; Di Bartolo, B.; Piccinelli, F.; Speghini, A. Effect of Spatial Confinement on Luminescence of Y3Al5O12 Nano-Particles Doped with Chromium Ions. J. Lumin. 2013, 144, 191–197.

(35)    Dolcet, P.; Latini, F.; Casarin, M.; Speghini, A.; Tondello, E.; Foss, C.; Diodati, S.; Verin, L.; Motta, A.; Gross, S. Inorganic Chemistry in a Nanoreactor: Doped ZnO Nanostructures by Miniemulsion. Eur. J. Inorg. Chem. 2013, No. 13.

(36)    Passuello, T.; Piccinelli, F.; Trevisani, M.; Giarola, M.; Mariotto, G.; Marciniak, L.; Hreniak, D.; Guzik, M.; Fasoli, M.; Vedda, A.; et al. Structural and Optical Properties of Vernier Phase Lutetium Oxyfluorides Doped with Lanthanide Ions: Interesting Candidates as Scintillators and X-Ray Phosphors. J. Mater. Chem. 2012, 22 (21).

(37)    Pin, S.; Piccinelli, F.; Kumar, K. U.; Enzo, S.; Ghigna, P.; Cannas, C.; Musinu, A.; Mariotto, G.; Bettinelli, M.; Speghini, A. Structural Investigation and Luminescence of Nanocrystalline Lanthanide Doped NaNbO3 and Na(0.5)K(0.)5NbO(3). J. Solid State Chem. 2012, 196, 1–10.

(38)    Pedroni, M.; Piccinelli, F.; Polizzi, S.; Speghini, A.; Bettinelli, M.; Haro-González, P. Upconverting Ho-Yb Doped Titanate Nanotubes. Mater. Lett. 2012, 80.

(39)    Passuello, T.; Pedroni, M.; Piccinelli, F.; Polizzi, S.; Marzola, P.; Tambalo, S.; Conti, G.; Benati, D.; Vetrone, F.; Bettinelli, M.; et al. PEG-Capped, Lanthanide Doped GdF3 Nanoparticles: Luminescent and T2 Contrast Agents for Optical and MRI Multimodal Imaging. Nanoscale 2012, 4 (24), 7682–7689.

(40)    Kumar, K. U.; Linganna, K.; Babu, S. S.; Piccinelli, F.; Speghini, A.; Giarola, M.; Mariotto, G.; Jayasankar, C. K. Synthesis, Structural Properties and Upconversion Emission of Er3+ and Er3+/Yb3+ Doped Nanocrystalline NaNbO3. Sci. Adv. Mater. 2012, 4 (5–6), 584–590.

(41)    Speghini, A.; Piccinelli, F.; Bettinelli, M. Synthesis, Characterization and Luminescence Spectroscopy of Oxide Nanopowders Activated with Trivalent Lanthanide Ions: The Garnet Family. Opt. Mater. (Amst). 2011, 33 (3), 247–257.

(42)    Rodriguez, E. M.; Kumar, K. U.; Speghini, A.; Piccinelli, F.; Nodari, L.; Cannas, C.; Bettinelli, M.; Jaque, D.; Sole, J. G. Non-Linear Niobate Nanocrystals for Two-Photon Imaging. Opt. Mater. (Amst). 2011, 33 (3), 258–266.

(43)    Pedroni, M.; Piccinelli, F.; Passuello, T.; Giarola, M.; Mariotto, G.; Polizzi, S.; Bettinelli, M.; Speghini, A. Lanthanide Doped Upconverting Colloidal CaF2 Nanoparticles Prepared by a Single-Step Hydrothermal Method: Toward Efficient Materials with near Infrared-to-near Infrared Upconversion Emission. Nanoscale 2011, 3 (4).

(44)    Passuello, T.; Piccinelli, F.; Pedroni, M.; Polizzi, S.; Mangiarini, F.; Vetrone, F.; Bettinelli, M.; Speghini, A. NIR-to-Visible and NIR-to-NIR Upconversion in Lanthanide Doped Nanocrystalline GdOF with Trigonal Structure. Opt. Mater. (Amst). 2011, 33 (10), 1500–1505.

(45)    Passuello, T.; Piccinelli, F.; Pedroni, M.; Bettinelli, M.; Mangiarini, F.; Naccache, R.; Vetrone, F.; Capobianco, J. A. A.; Speghini, A. White Light Upconversion of Nanocrystalline Er/Tm/Yb Doped Tetragonal Gd4O3F6. Opt. Mater. (Amst). 2011, 33 (4), 643–646.

(46)    Hreniak, D.; Marciniak, L.; Strek, W.; Piccinelli, F.; Speghini, A.; Bettinelli, M. Comment on “Colossal Dielectric and Magnetodielectric Effect in Er2O3 Nanoparticles Embedded in a SiO2 Glass Matrix.” Phys. Rev. B 2011, 84 (5), 56102.

(47)    Hreniak, D.; Doskocz, J.; Guchowski, P.; Lisiecki, R.; Strȩk, W.; Vu, N.; Loc, D. X.; Anh, T. K.; Bettinelli, M.; Speghini, A. Enhancement of Luminescence Properties of Eu3+:YVO4 in Polymeric Nanocomposites upon UV Excitation. J. Lumin. 2011, 131 (3), 473–476.

(48)    Haro-Gonzalez, P.; Pedroni, M.; Piccinelli, F.; Martin, L. L.; Polizzi, S.; Giarola, M.; Mariotto, G.; Speghini, A.; Bettinelli, M.; Martin, I. R. Synthesis, Characterization and Optical Spectroscopy of Eu3+ Doped Titanate Nanotubes. J. Lumin. 2011, 131 (12), 2473–2477.

(49)    Dong, N. N.; Pedroni, M.; Piccinelli, F.; Conti, G.; Sbarbati, A.; Ramírez-Hernández, J. E.; Maestro, L. M.; Iglesias-De La Cruz, M. C.; Sanz-Rodriguez, F.; Juarranz, A.; et al. NIR-to-NIR Two-Photon Excited CaF2:Tm3+,Yb3+nanoparticles: Multifunctional Nanoprobes for Highly Penetrating Fluorescence Bio-Imaging. ACS Nano 2011, 5 (11), 8665–8671.

(50)    Venkatramu, V.; Giarola, M.; Mariotto, G.; Enzo, S.; Polizzi, S.; Jayasankar, C. K.; Piccinelli, F.; Bettinelli, M.; Speghini, A. Nanocrystalline Lanthanide-Doped Lu3Ga5O12 Garnets: Interesting Materials for Light-Emitting Devices. Nanotechnology 2010, 21 (17), 175703.

(51)    Mangiarini, F.; Naccache, R.; Speghini, A.; Bettinelli, M.; Vetrone, F.; Capobianco, J. A. A. Upconversion in Er3+-Doped Gd2O3 Nanocrystals Prepared by Propellant Synthesis and Flame Spray Pyrolysis. Mater. Res. Bull. 2010, 45 (8), 927–932.

(52)    Lupo, F.; Fragalà, M. E. E.; Gupta, T.; Mamo, A.; Aureliano, A.; Bettinelli, M.; Speghini, A.; Gulino, A. Luminescence of a Ruthenium Complex Monolayer, Covalently Assembled on Silica Substrates, upon CO Exposure. J. Phys. Chem. C 2010, 114 (32), 13459–13464.

(53)    Ghigna, P.; Pin, S.; Speghini, A.; Bettinelli, M.; Tsuboi, T. Unusual Ln3+ Substitutional Defects: The Local Chemical Environment of Eu3+ and Er3+ in Nanocrystalline Nb2O5 by Ln-K Edge EXAFS. J. Phys. Chem. Solids 2010, 71 (3), 400–403.

(54)    Bianco, A.; Cacciotti, I.; Fragalá, M. E.; Lamastra, F. R.; Speghini, A.; Piccinelli, F.; Malandrino, G.; Gusmano, G. Eu-Doped Titania Nanofibers: Processing, Thermal Behaviour and Luminescent Properties. J. Nanosci. Nanotechnol. 2010, 10 (8).

(55)    Rodriguez, E. M.; Speghini, A.; Piccinelli, F.; Nodari, L.; Bettinelli, M.; Jaque, D.; Sole, J. G. Multicolour Second Harmonic Generation by Strontium Barium Niobate Nanoparticles. J. Phys. D-Applied Phys. 2009, 42 (10).

(56)    Montini, T.; Speghini, A.; De Rogatis, L.; Lorenzut, B.; Bettinelli, M.; Graziani, M.; Fornasiero, P. Identification of the Structural Phases of CexZr1-xO2 by Eu(III) Luminescence Studies. J. Am. Chem. Soc. 2009, 131 (36), 13155–13160.

(57)    Mattarelli, M.; Montagna, M.; Rossi, F.; Tosello, C.; Afify, N. D.; Bettinelli, M.; Speghini, A.; Armellini, C.; Jestin, Y.; Rocca, F.; et al. Raman and Er3+ Spectroscopy of Hafnia Single Crystals and Nanocrystals. Opt. Mater. (Amst). 2009, 31 (9), 1362–1365.

(58)    Martin-Rodriguez, R.; Valiente, R.; Polizzi, S.; Bettinelli, M.; Speghini, A.; Piccinelli, F. Upconversion Luminescence in Nanocrystals of Gd3Ga5O12 and Y3Al5O12 Doped with Tb3+-Yb3+ and Eu3+-Yb3+. J. Phys. Chem. C 2009, 113 (28), 12195–12200.

(59)    Mahalingam, V.; Vetrone, F.; Naccache, R.; Speghini, A.; Capobianco, J. A. Colloidal Tm3+/Yb3+-Doped LiYF4 Nanocrystals: Multiple Luminescence Spanning the UV to NIR Regions via Low-Energy Excitation. Adv. Mater. 2009, 21 (40), 4025–4028.

(60)    Mahalingam, V.; Vetrone, F.; Naccache, R.; Speghini, A.; Capobianco, J. A. J. A. Structural and Optical Investigation of Colloidal Ln3+/Yb3+ Co-Doped KY3F10 Nanocrystals. J. Mater. Chem. 2009, 19 (20), 3149–3152.

(61)    Lisiecki, R.; Ryba-Romanowski, W.; Speghini, A.; Bettinelli, M. Luminescence Spectroscopy of Er3+-Doped and Er3+, Yb3+-Codoped LaPO4 Single Crystals. J. Lumin. 2009, 129 (5), 521–525.

(62)    Kasprowicz, D.; Lapinski, A.; Runka, T.; Speghini, A.; Bettinelli, M. Vibrational Investigations of Lanthanide Doped Strontium Barium Niobate (SBN) Crystals. J. Alloys Compd. 2009, 478 (1–2).

(63)    Hreniak, D.; Bettinelli, M.; Speghini, A.; Łukowiak, A.; Głuchowski, P.; Wiglusz, R. The F-F Emission of Pr 3+ Ion as an Optical Probe for the Structural Properties of YAG Nanoceramics. J. Nanosci. Nanotechnol. 2009, 9 (11).

(64)    Venkatramu, V.; Falcomer, D.; Speghini, A.; Bettinelli, M.; Jayasankar, C. K. Synthesis and Luminescence Properties of Er3+-Doped Lu3Ga5O12 Nanocrystals. J. Lumin. 2008, 128 (5–6).

(65)    Naccache, R.; Vetrone, F.; Speghini, A.; Bettinelli, M.; Capobianco, J. A. A. Cross-Relaxation and Upconversion Processes in Pr3+ Singly Doped and Pr3+/Yb3+ Codoped Nanocrystalline Gd3Ga5O12: The Sensitizer/Activator Relationship. J. Phys. Chem. C 2008, 112 (20), 7750–7756.

(66)    Montini, T.; Speghini, A.; Fornasiero, P.; Bettinelli, M.; Graziani, M. Effect of the Thermal Pre-Treatments on Ceria-Zirconia Redox Properties: An Eu3+ Luminescence Study. J. Alloys Compd. 2008, 451 (1–2), 617–620.

(67)    Mahalingam, V.; Mangiarini, F.; Vetrone, F.; Venkatramu, V.; Bettinelli, M.; Speghini, A.; Capobianco, J. A. Bright White Upconversion Emission from Tm3+/Yb 3+/Er3+-Doped Lu3Ga5O12 Nanocrystals. J. Phys. Chem. C 2008, 112 (46).

(68)    Kasprowicz, D.; Runka, T.; Speghini, A.; Falcomer, D.; García Solé, J.; Bettinelli, M. Lanthanide-Doped Strontium Barium Niobate (SBN) Materials: A Vibrational Investigation. J. Lumin. 2008, 128 (5–6).

(69)    Hreniak, D.; Strȩk, W.; Głuchowski, P.; Bettinelli, M.; Speghini, A. The Influence of the Specific Surface of Grains on the Luminescence Properties of Nd3+-Doped Y3Al5O12 Nanopowders. Appl. Phys. B Lasers Opt. 2008, 91 (1), 89–93.

(70)    Daldosso, M.; Speghini, A.; Ghigna, P.; de la O. Ramirez, M.; Jaque, D.; Bausá, L. E.; Solé, J. G.; Bettinelli, M. Lanthanide Doped Strontium Barium Niobate: Optical Spectroscopy and Local Structure at the Impurity Sites. J. Alloys Compd. 2008, 451 (1–2).

(71)    Daldosso, M.; Falcomer, D.; Speghini, A.; Ghigna, P.; Bettinelli, M. Synthesis, EXAFS Investigation and Optical Spectroscopy of Nanocrystalline Gd3Ga5O12 Doped with Ln3+ Ions (Ln = Eu, Pr). Opt. Mater. (Amst). 2008, 30 (7), 1162–1167.

(72)    Daldosso, M.; Falcomer, D.; Speghini, A.; Bettinelli, M.; Enzo, S.; Lasio, B.; Polizzi, S. Synthesis, Structural Investigation and Luminescence Spectroscopy of Nanocrystalline Gd3Ga5O12 Doped with Lanthanide Ions. J. Alloys Compd. 2008, 451 (1–2), 553–556.

(73)    Concas, G.; Spano, G.; Bettinelli, M.; Speghini, A. Distribution of Eu3+ Dopant Ions in C3i and C2 Sites of the Nanocrystalline Sc2O3:Eu Phosphor. Zeitschrift fur Naturforsch. – Sect. A J. Phys. Sci. 2008, 63 (3–4), 210–216.

(74)    Armelao, L.; Bottaro, G.; Pascolini, M.; Sessolo, M.; Tondello, E.; Bettinelli, M.; Speghini, A. Structure-Luminescence Correlations in Europium-Doped Sol-Gel ZnO Nanopowders. J. Phys. Chem. C 2008, 112 (11), 4049–4054.

(75)    Krsmanovic, R.; Morozov, V. A.; Lebedev, O. I.; Polizzi, S.; Speghini, A.; Bettinelli, M.; Van Tendeloo, G. Structural and Luminescence Investigation on Gadolinium Gallium Garnet Nanocrystalline Powders Prepared by Solution Combustion Synthesis. Nanotechnology 2007, 18 (32).

(76)    Ghigna, P.; Speghini, A.; Bettinelli, M. “Unusual Ln3+ Substitutional Defects”: The Local Chemical Environment of Pr3+ and Nd3+ in Nanocrystalline TiO2 by Ln-K Edge EXAFS. J. Solid State Chem. 2007, 180 (11).

(77)    Ghigna, P.; Speghini, A.; Bettinelli, M. Local Chemical Environment of Pr3+ Substitutional Defects in Bulk and Nanocrystalline Gd3Ga5O12: A Joint EXAFS and Luminescence Study. J. Phys. Chem. C 2007, 111 (33), 12236–12242.

(78)    Falcomer, D.; Speghini, A.; Ibba, G.; Enzo, S.; Cannas, C.; Musinu, A.; Bettinelli, M. Morphology and Luminescence of Nanocrystalline Nb2O5 Doped with Eu3+. J. Nanomater. 2007, 2007.

(79)    Daldosso, M.; Sokolnicki, J.; Kepinski, L.; Legendziewicz, J.; Speghini, A.; Bettinelli, M. Preparation and Optical Properties of Nanocrystalline Lu2O3:Eu3+ Phosphors. J. Lumin. 2007, 122 (1–2), 858–861.

(80)    Cannas, C.; Mainas, M.; Musinu, A.; Piccaluga, G.; Enzo, S.; Bazzoni, M.; Speghini, A.; Bettinelli, M. Structural Investigations and Luminescence Properties of Nanocrystalline Europium-Doped Yttrium Silicates Prepared by a Sol-Gel Technique. Opt. Mater. (Amst). 2007, 29 (6), 585–592.

(81)    Bettinelli, M.; Dallacasa, V.; Falcomer, D.; Fornasiero, P.; Gombac, V.; Montini, T.; Romano, L.; Speghini, A. Photocatalytic Activity of TiO2 Doped with Boron and Vanadium. J. Hazard. Mater. 2007, 146 (3), 529–534.

(82)   Scotti, R.; Canevali, C.; Polizzi, S.; Bettinelli, M.; Speghini, A.; Morazzoni, F. Inverted Opal Luminescent Ce-Doped Silica Glasses. Int. J. Photoenergy 2006, 2006.

(83)    Pazik, R.; Hreniak, D.; Strek, W.; Speghini, A.; Bettinelli, M.; Pązik, R.; Hreniak, D.; Strek, W.; Speghini, A.; Bettinelli, M. Structural and Luminescence Properties of Eu3+ Doped BaxSr1-xTiO3 (BST) Nanocrystalline Powders Prepared by Different Methods. Opt. Mater. (Amst). 2006, 28 (11), 1284–1288.

(84)    Krsmanovic, R.; Lebedev, O. I.; Speghini, A.; Bettinelli, M.; Polizzi, S.; Van Tendeloo, G. Structural Characterization and Luminescence Properties of Nanostructured Lanthanide-Doped Sc2O3 Prepared by Propellant Synthesis. Nanotechnology 2006, 17 (11), 2805–2812.

(85)    Hreniak, D.; Strek, W.; Speghini, A.; Bettinelli, M.; Boulon, G.; Guyot, Y. Infrared Induced Red Luminescence of Eu3+-Doped Polycrystalline LiNbO3. Appl. Phys. Lett. 2006, 88 (16), 161118.

(86)    Hreniak, D.; Speghini, A.; Bettinelli, M.; Strek, W. Spectroscopic Investigations of Nanostructured LiNbO3 Doped with Eu3+. J. Lumin. 2006, 119, 219–223.

(87)    Falcomer, D.; Daldosso, M.; Cannas, C.; Musinu, A.; Lasio, B.; Enzo, S.; Speghini, A.; Bettinelli, M. A One-Step Solvothermal Route for the Synthesis of Nanocrystalline Anatase TiO2 Doped with Lanthanide Ions. J. Solid State Chem. 2006, 179 (8), 2452–2457.

(88)    Bettinelli, M.; Speghini, A.; Falcomer, D.; Daldosso, M.; Dallacasa, V.; Romanò, L. Photocatalytic, Spectroscopic and Transport Properties of Lanthanide-Doped TiO2 Nanocrystals. J. Phys. Condens. Matter 2006, 18 (33), S2149–S2160.

(89)    Speghini, A.; Bettinelli, M.; Riello, P.; Bucella, S.; Benedetti, A. Preparation, Structural Characterization, and Luminescence Properties of Eu3+-Doped Nanocrystalline ZrO2. J. Mater. Res. 2005, 20 (10), 2780–2791.

(90)    Pandozzi, F.; Vetrone, F.; Boyer, J.-C.; Naccache, R.; Capobianco, J. A.; Speghini, A.; Bettinelli, M. A Spectroscopic Analysis of Blue and Ultraviolet Upconverted Emissions from Gd3Ga5O12:Tm3+, Yb3+ Nanocrystals. J. Phys. Chem. B 2005, 109 (37).

(91)    Caponetti, E.; Saladino, M. L.; Martino, D. C.; Pedone, L.; Enzo, S.; Russu, S.; Bettinelli, M.; Speghini, A. Luminescence Properties of Neodymium-Doped Yttrium Aluminium Garnet Obtained by the Co-Precipitation Method Combined with the Mechanical Process. From Nanopowders to Funct. Mater. 2005, 106, 7–16.

(92)    Cannas, C.; Mainas, M.; Musinu, A.; Piccaluga, G.; Speghini, A.; Bettinelli, M. Nanocrystalline Luminescent Eu3+-Doped Y2SiO5 Prepared by Sol-Gel Technique. Opt. Mater. (Amst). 2005, 27 (9), 1506–1510.

(93)    Bazzoni, M.; Bettinelli, M.; Daldosso, M.; Enzo, S.; Serra, F.; Speghini, A. Structural and Thermal Investigation of Gadolinium Gallium Mixed Oxides Obtained by Coprecipitation: Observation of a New Metastable Phase. J. Solid State Chem. 2005, 178 (7), 2301–2305.

(94)    Vetrone, F.; Boyer, J. C.; Capobianco, J. A.; Speghini, A.; Bettinelli, M.; Krsmanovic, R.; Polizzi, S. Structural Investigation and Anti-Stokes Emission of Scandium Oxide Nanocrystals Activated with Trivalent Erbium. J. Electrochem. Soc. 2005, 152 (2), H19–H24.

(95)    Polizzi, S.; Bucella, S.; Speghini, A.; Vetrone, F.; Naccache, R.; Boyer, J. C.; Capobianco, J. A. Nanostructured Lanthanide-Doped Lu2O3 Obtained by Propellant Synthesis. Chem. Mater. 2004, 16 (7), 1330–1335.

(96)    Naccache, R.; Vetrone, F.; Boyer, J. C.; Capobianco, J. A.; Speghini, A.; Bettinelli, M. Visible Upconversion Emission of Pr 3+ Doped Gadolinium Gallium Garnet Nanocrystals. J. Nanosci. Nanotechnol. 2004, 4 (8).

(97)    Francini, R.; Pietrantoni, S.; Zambelli, M.; Speghini, A.; Bettinelli, M. Upconversion Dynamics in Er3+ Doped Nanocrystalline YAlO3. J. Alloys Compd. 2004, 380 (1–2), 34–38.

(98)    Boyer, J. C.; Vetrone, F.; Capobianco, J. A.; Speghini, A.; Bettinelli, M. Variation of Fluorescence Lifetimes and Judd-Ofelt Parameters between Eu 3+Doped Bulk and Nanocrystalline Cubic Lu2O3. J. Phys. Chem. B 2004, 108 (52), 20137–20143.

(99)    Boyer, J. C.; Vetrone, F.; Capobianco, J. A.; Speghini, A.; Bettinelli, M. Yb3+ Ion as a Sensitizer for the Upconversion Luminescence in Nanocrystalline Gd3Ga5O12 : Ho3+. Chem. Phys. Lett. 2004, 390 (4–6), 403–407.

(100) Vetrone, F.; Boyer, J. C.; Capobianco, J. A.; Speghini, A.; Bettinelli, M. Wet Chemical Synthesis and Luminescence Properties of Erbium-Doped Nanocrystalline Yttrium Oxide. J. Mater. Res. 2004, 19 (11), 3398–3407.

(101) Vetrone, F.; Boyer, J. C.; Capobianco, J. A.; Speghini, A.; Bettinelli, M. Significance of Yb3+ Concentration on the Upconversion Mechanisms in Codoped Y2O3:Er3+, Yb3+ Nanocrystals. J. Appl. Phys. 2004, 96 (1), 661–667.

(102) Vetrone, F.; Boyer, J. C.; Capobianco, J. A.; Speghini, A.; Bettinelli, M. A Spectroscopic Investigation of Trivalent Lanthanide Doped Y2O3 Nanocrystals. Nanotechnology 2004, 15 (1), 75–81.

(103) Krsmanović, R.; Canton, P.; Speghini, A.; Bettinelli, M.; Polizzi, S.; Krsmanovic, R.; Canton, P.; Speghini, A.; Bettinelli, M.; Polizzi, S. Characterization of Nanoporous Lanthanide-Doped YAG Powders Obtained by Propellant Synthesis. Prog. Adv. Mater. Process. 2004, 453454, 251–256.

(104) Boyer, J. C.; Vetrone, F.; Capobianco, J. A.; Speghini, A.; Zambelli, M.; Bettinelli, M. Investigation of the Upconversion Processes in Nanocrystalline Gd3Ga5O12:Ho3+. J. Lumin. 2004, 106 (3–4), 263–268.

(105) Vetrone, F.; Boyer, J. C.; Capobianco, J. A.; Speghini, A.; Bettinelli, M. Luminescence Spectroscopy and near-Infrared to Visible Upconversion of Nanocrystalline Gd3Ga5O12:Er3+. J. Phys. Chem. B 2003, 107 (39), 10747–10752.

(106) Vetrone, F.; Boyer, J. C.; Capobianco, J. A.; Speghini, A.; Bettinelli, M. Concentration-Dependent near-Infrared to Visible Upconversion in Nanocrystalline and Bulk Y2O3 : Er3+. Chem. Mater. 2003, 15 (14), 2737–2743.

(107) Vetrone, F.; Boyer, J. C.; Capobianco, J. A.; Speghini, A.; Bettinelli, M. Effect of Yb3+ Codoping on the Upconversion Emission in Nanocrystalline Y2O3:Er3+. J. Phys. Chem. B 2003, 107 (5), 1107–1112.

(108) Rolli, R.; Bueno, L. A.; Ribeiro, S. J. L.; Messaddeq, Y.; Bettinelli, M.; Speghini, A.; Ferrari, M.; Armellini, C.; Montagna, M.; Righini, G. C.; et al. Transparent Er3+-Activated Lead Fluorogermanate Glass Ceramics. In Proceedings of SPIE – The International Society for Optical Engineering; 2003; Vol. 4829 I.

(109) Conti, G. N.; Tikhomirov, V. K.; Chen, B.; Berneschi, S.; Brenci, M.; Pelli, S.; Seddon, A. B.; Bettinelli, M.; Speghini, A.; Righini, G. C. Ion-Exchanged Planar Waveguides in Different Er3+-Doped Tellurite Glasses. In Rare-Earth-Doped Materials and Devices Vii; Jiang, S., Lucas, J., Eds.; 2003; Vol. 4990, pp 97–102.

(110) Concas, G.; Spano, G.; Bettinelli, M.; Speghini, A. Investigation of Eu3+ Site Occupancy in Cubic Y2O3 and Lu2O3 Nanocrystals. Zeitschrift Fur Naturforsch. Sect. a-a J. Phys. Sci. 2003, 58 (9–10), 551–557.

(111) Cannas, C.; Casu, M.; Mainas, M.; Musinu, A.; Piccaluga, G.; Polizzi, S.; Speghini, A.; Bettinelli, M. Synthesis, Characterisation and Optical Properties of Nanocrystalline Y2O3-Eu3+ Dispersed in a Silica Matrix by a Deposition-Precipitation Method. J. Mater. Chem. 2003, 13 (12).

(112) Vetrone, F.; Boyer, J. C.; Capobianco, J. A.; Speghini, A.; Bettinelli, M. NIR to Visible Upconversion in Nanocrystalline and Bulk Lu2O3:Er3+. J. Phys. Chem. B 2002, 106 (22).

(113) Polizzi, S.; Battagliarin, M.; Bettinelli, M.; Speghini, A.; Fagherazzi, G. Investigation on Lanthanide-Doped Y2O3 Nanopowders Obtained by Wet Chemical Synthesis. J. Mater. Chem. 2002, 12 (3), 742–747.

(114) Ghigna, P.; Mustarelli, P.; Tomasi, C.; Quartarone, E.; Scavini, M.; Speghini, A.; Bettinelli, M. A Combined Nuclear Magnetic Resonance and X-Ray Absorption Fine Structure Study on the Local Structures of Ge and Pb in PbO-GeO2 Glasses and Their Relationships with Thermal Properties and Devitrification Products. J. Phys. Chem. B 2002, 106 (38), 9802–9809.

(115) Concas, G.; Congiu, F.; Spano, G.; Bettinelli, M.; Speghini, A. Investigation of Eu3+ Site Occupancy and Eu-O Covalency in Nanocrystalline Y2O3 by Mossbauer Spectroscopy. Hyperfine Interact. 2002, 5, 45–48.

(116) Capobianco, J. A.; Vetrone, F.; Boyer, J. C.; Speghini, A.; Bettinelli, M. Visible Upconversion of Er3+ Doped Nanocrystalline and Bulk Lu2O3. Opt. Mater. (Amst). 2002, 19 (2), 259–268.

(117) Capobianco, J. A. A.; Vetrone, F.; Boyer, J. C. C.; Speghini, A.; Bettinelli, M. Enhancement of Red Emission (4F9/2 → 4I15/2) via Upconversion in Bulk and Nanocrystalline Cubic Y2O3:Er3+. J. Phys. Chem. B 2002, 106 (6), 1181–1187.

(118) Capobianco, J. A.; Boyer, J. C.; Vetrone, F.; Speghini, A.; Bettinelli, M. Optical Spectroscopy and Upconversion Studies of Ho3+-Doped Bulk and Nanocrystalline Y2O3. Chem. Mater. 2002, 14 (7), 2915–2921.

(119) Cannas, C.; Casu, M.; Musinu, A.; Piccaluga, G.; Speghini, A.; Bettinelli, M. Synthesis, Characterization and Optical Spectroscopy of a Y2O3-SiO2 Nanocomposite Doped with Eu3+. J. Non. Cryst. Solids 2002, 306 (2), 193–199.

(120) Battisha, I. K.; Speghini, A.; Polizzi, S.; Agnoli, A.; Bettinelli, M. Molten Chloride Synthesis, Structural Characterisation and Luminescence Spectroscopy of Ultrafine Eu3+-Doped BaTiO3 and SrTiO3. Mater. Lett. 2002, 57 (1), 183–187.

(121) Polizzi, S.; Fagherazzi, G.; Battagliarin, M.; Bettinelli, M.; Speghini, A. Nanostructured Lanthanide-Doped Y2O3 Obtained by Propellant and Wet Synthesis. Proc. 5th Multinatl. Congr. Electron Microsc. 2001, 437–438.

(122) Polizzi, S.; Fagherazzi, G.; Battagliarin, M.; Bettinelli, M.; Speghini, A. Fractal Aggregates of Lanthanide-Doped Y2O3 Nanoparticles Obtained by Propellant Synthesis. J. Mater. Res. 2001, 16 (1), 146–154.

(123) Concas, G.; Muntoni, C.; Spano, G.; Bettinelli, M.; Speghini, A. Mossbauer Investigation of Eu3+ Site Occupancy and Eu-O Covalency in Y2O3 and Gd2O3 Nanocrystals. Zeitschrift Fur Naturforsch. Sect. a-a J. Phys. Sci. 2001, 56 (3–4), 267–272.

(124) Fagherazzi, G.; Polizzi, S.; Bettinelli, M.; Speghini, A. Yttria-Based Nano-Sized Powders: A New Class of Fractal Materials Obtained by Combustion Synthesis. J. Mater. Res. 2000, 15 (3), 586–589.

(125) Capobianco, J. A. A.; Vetrone, F.; D’Alesio, T.; Tessari, G.; Speghini, A.; Bettinelli, M. Optical Spectroscopy of Nanocrystalline Cubic Y2O3:Er3+ Obtained by Combustion Synthesis. Phys. Chem. Chem. Phys. 2000, 2 (14), 3203–3207.

(126) Allieri, B.; Depero, L. E.; Marino, A.; Sangaletti, L.; Caporaso, L.; Speghini, A.; Bettinelli, M. Growth and Microstructural Analysis of Nanosized Y2O3 Doped with Rare-Earths. Mater. Chem. Phys. 2000, 66 (2–3), 164–171.

(127) Tessari, G.; Bettinelli, M.; Speghini, A.; Ajò, D.; Pozza, G.; Depero, L. E.; Allieri, B.; Sangaletti, L. Synthesis and Optical Properties of Nanosized Powders: Lanthanide-Doped Y2O3. Appl. Surf. Sci. 1999, 144145 (0).