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Inteligent transition metal complexes: Singlet-triplet luminescence for off-on-off systems

Grant number: 12/20346-6
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): December 01, 2012
Effective date (End): November 30, 2013
Field of knowledge:Physical Sciences and Mathematics - Chemistry
Principal Investigator:Rose Maria Carlos
Grantee:Deborah Asbahr de Lima
Home Institution: Centro de Ciências Exatas e de Tecnologia (CCET). Universidade Federal de São Carlos (UFSCAR). São Carlos , SP, Brazil

Abstract

Herein we are aiming to develop transition metal complexes that exhibit luminescence from both the singlet excited state with characteristics of 1ILCT as the triplet excited states 3MLCT to overcomes the spin restriction rules. With this adaptability, the complexes can be used in a multitude of applications including catalytic processes, solar energy conversion to fuels/electricity, biotechnology, photochemical molecular devices. We intend to prepare the fac-[Re(CO)3(fen-PTME)L]0/+1 complexes where fen-PTME = N(-1,10-phenanthroline)-5- perylene 3,4,9,10-tetracarboxidimide, and L = bromide, triflate and imidazole and investigated their spectroscopic, electrochemical, photochemical and photophysical properties in aqueous solution and in organic solvents. These complexes are interesting because of their chemical robustness, thermal and photochemical stability, intense visible luminescence and synthetic flexibility to be immobilized in polymeric films. We hope, with this research to open up new perspectives in design new inorganic luminescent photosensitizers