Advanced search
Start date

Host guest hybrid materials and nanostructured supramolecular systems for photonic and biophotonic applications


At the Laboratory of Spectroscopy of Functional Materials (LEMAF) in IFSC/USP, we carry out interdisciplinary research in the field optical and luminescent materials for photonic and biophotonic applications. Among the targeted materials are: 1) Glasses and glass ceramics doped with trivalent rare earth ions TR3+ for scintillators, solar concentrators and sensors; 2) Host-guest hybrids based on emissive guest molecules immobilized in mesoporous hosts and photoresponsive supramolecular systems towards applications in bioimaging, photodynamic therapy, biosensors, and lighting devices. This project aims at realize significant progress in line (2) through a team of 6 directly involved researchers (3PDs, 2DRs, 1IC) and solid collaborations in Brazil and abroad. We propose the production, characterization and, whenever feasible, development of prototypes based on: i) Films and bulk samples of silicate and organo-silicate matrices produced by sol-gel and loaded with the triplet emitting complexes of Ir(III) e Pt(II) displaying high quantum yield from the blue to the red, in concentrations optimized to result in maximum molecular dispersion or aggregation, aiming at white light generation and organic solar cell conversion; ii) Nanoparticles of NaYF4 doped with Er3+/Yb3+ and Tm3+/Yb3+ operating by upconversion (UCNPs) associated to species that are susceptible to resonant energy transfer (LRET), aiming at the development of paper sensors (micropads) for pathogenic bacteria; iii) Supramolecular nanostructures based on UCNPs decorated with cyclodextrin and azobenzene (AZO) molecules, in the presence of Au NPs, aiming at evaluating the luminescent response by exposure to the plasmon effect that might become available or be prevented by the conformational cis-trans photo-responsiveness of the AZO "switch" leading to assembly/disassembly of the system; iv) CdTe and CdS quantum dots for higher order harmonic generation via plasmon induced by femtosecond laser. (AU)

Articles published in Agência FAPESP Newsletter about the research grant:
Articles published in other media outlets (0 total):
More itemsLess items

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RAVARO, LEANDRO P.; ARAI, MARYLYN S.; MAIA, LAURO J. Q.; DOUSTI, M. REZA; DE OLIVEIRA SANTIAGO, PEDRO HENRIQUE; ELLENA, JAVIER; DE CAMARGO, ANDREA S. S.. Multifunctional Platform Based on a Copper(I) Complex and NaYF4:Tm3+,Yb3+Upconverting Nanoparticles Immobilized into a Polystyrene Matrix: Downshifting and Upconversion Oxygen Sensing. ACS APPLIED MATERIALS & INTERFACES, v. N/A, p. 11-pg., . (21/10066-5, 13/07793-6, 21/11531-3, 20/05627-5, 13/24727-7, 19/12588-9)
ESTEVAO, BIANCA M.; VILELA, RAQUEL R. C.; GEREMIAS, ISABELLA P.; ZANONI, KASSIO P. S.; DE CAMARGO, ANDREA S. S.; ZUCOLOTTO, VALTENCIR. Mesoporous silica nanoparticles incorporated with Ir(III) complexes: From photophysics to photodynamic therapy. Photodiagnosis and Photodynamic Therapy, v. 40, p. 9-pg., . (13/07793-6, 20/05627-5, 20/00124-5, 17/22056-9, 16/07706-4)

Please report errors in scientific publications list using this form.