Extensive Reduction in Back Electron Transfer in Twisted Intramolecular Charge-Transfer (TICT) Coumarin-Dye-Sensitized TiO2Nanoparticles/Film: A Femtosecond Transient Absorption Study

2014 ◽  
Vol 20 (12) ◽  
pp. 3510-3519 ◽  
Author(s):  
Tushar Debnath ◽  
Partha Maity ◽  
Hyacintha Lobo ◽  
Balvant Singh ◽  
Ganapati S. Shankarling ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Transient Absorption ◽  
Intramolecular Charge Transfer ◽  
Absorption Study ◽  
Twisted Intramolecular Charge Transfer ◽  
Dye Sensitized ◽  
Femtosecond Transient Absorption ◽  
Back Electron Transfer ◽  
Coumarin Dye

Photoinduced electron transfer dynamics in dye-sensitized ZnO nanowire photoanodes

2018 ◽  
Vol 32 (19) ◽  
pp. 1840049
Author(s):  
Akihiro Furube ◽  
Takahiro Arai ◽  
Masahiro Okazaki ◽  
Shinichiro Yanagiya ◽  
Liang-Yih Chen ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Transient Absorption ◽  
Low Cost ◽  
Transient Absorption Spectroscopy ◽  
Zno Nanowire ◽  
Dye Sensitized ◽  
Femtosecond Transient Absorption ◽  
State Formula ◽  
Flexible Solar Cell

A photoanode using dye-sensitized ZnO nanowire (NW) is a good candidate for low-cost, colorful, light-weight and flexible solar cell material. We have synthesized a ZnO NW anode and a ZnO nanowire–nanoparticle (NWNP) anode, in which ZnO nanoparticles (NPs) are decollated on the surface of NWs. Photo-induced electron transfer dynamics from the excited state of sensitizer dye (D149) to the conduction band of ZnO NW and ZnO NWNP was clarified using femtosecond transient absorption spectroscopy. The decay of the single excited state ([Formula: see text]) of D149 was faster in ZnO NW than that of ZnO NWNP, indicating that NW is more suitable as an efficient electron acceptor.

scholarly journals Recent advances in twisted intramolecular charge transfer (TICT) fluorescence and related phenomena in materials chemistry

2016 ◽  
Vol 4 (14) ◽  
pp. 2731-2743 ◽  
Author(s):  
Shunsuke Sasaki ◽  
Gregor P. C. Drummen ◽  
Gen-ichi Konishi
Keyword(s):  
Electron Transfer ◽  
Charge Transfer ◽  
Transfer Process ◽  
Intramolecular Charge Transfer ◽  
Materials Chemistry ◽  
Single Bond ◽  
Electron Transfer Process ◽  
Twisted Intramolecular Charge Transfer ◽  
Recent Advances ◽  
Donor And Acceptor

Twisted intramolecular charge transfer (TICT) is an electron transfer process that occurs upon photoexcitation in molecules that usually consist of a donor and acceptor part linked by a single bond.

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