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Preparation of Organic/Inorganic Hybrid Gels and Monoliths of Nb2O5 and Naphthalic Diimides.

Grant number: 22/02670-2
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): May 01, 2022
Effective date (End): April 30, 2023
Field of knowledge:Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
Principal Investigator:Grégoire Jean-François Demets
Grantee:Marcos Vinícius Augusto Alexandre de Santis
Host Institution: Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto (FFCLRP). Universidade de São Paulo (USP). Ribeirão Preto , SP, Brazil


The project proposes the preparation of hybrid gels containing niobium pentoxide and naphthalenediimides. These are novel systems, potentially photochromic, electrochromic, and semiconducting. These gels are to be prepared by controlled hydrolysis and niobium alcoholates, prepared in turn from pentachloride. The gels will receive organic fraction of naphthalic diimides, by simple physical mixing. Another strategy will deal with binding them to the oxide network covalently. The gels will be characterized and their physical, photophysical and photocatalytic properties will be evaluated.

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