Extensive Reduction in Back Electron Transfer in Twisted Intramolecular Charge??Transfer (TICT) Coumarin??Dye??Sensitized TiO2 Nanoparticles/Film: A Femtosecond …

T Debnath, P Maity, H Lobo, B Singh…

Index: Debnath, Tushar; Maity, Partha; Lobo, Hyacintha; Singh, Balvant; Shankarling, Ganapati S.; Ghosh, Hirendra N. Chemistry - A European Journal, 2014 , vol. 20, # 12 p. 3510 - 3519

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Citation Number: 16

Abstract

Abstract We report the synthesis, characterization, and optical and electrochemical properties of two structurally similar coumarin dyes (C1 and C2). These dyes have been deployed as sensitizers in TiO 2 nanoparticles and thin films, and the effect of molecular structure on interfacial electron-transfer dynamics has been studied. Steady-state optical absorption, emission, and time-resolved emission studies on both C1 and C2, varying the ...