Hydrophilicity Control of Visible-Light Hydrogen Evolution and Dynamics of the Charge-Separated State in Dye/TiO2/Pt Hybrid Systems (pages 15368–15381)
Won-Sik Han, Kyung-Ryang Wee, Hyun-Young Kim, Prof. Chyongjin Pac, Yu Nabetani, Daisuke Yamamoto, Tetsuya Shimada, Prof. Haruo Inoue, Heesung Choi, Prof. Kyeongjae Cho and Prof. Sang Ook Kang
Article first published online: 5 OCT 2012 | DOI: 10.1002/chem.201201500
Photosensitized H2 generation by a series of Dye/TiO2/Pt hybrids revealed clear dependence on the hydrophilic/hydrophobic character of the substituent R of Dye (see figure; Φ(H2)=apparent quantum yield for H2 generation.), which was shown by femtosecond transient spectroscopy to arise from the hydrophilic control of charge recombination (CR) between Dye.+ and the injected electron TiO2(e−).