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. 2019 Sep 16;14(18):3198-3204.
doi: 10.1002/asia.201900921. Epub 2019 Aug 27.

A Series of Ti6 Oxo Clusters Anchored with Arylamine Dyes: Effect of Dye Structures on Photocurrent Responses

Li-Na Cui  1 , Pei-Yi Liu  1 , Lei Yang  1 , Xian-Ping Shu  1 , Qin-Yu Zhu  1 , Jie Dai  1
Affiliations

A Series of Ti6 Oxo Clusters Anchored with Arylamine Dyes: Effect of Dye Structures on Photocurrent Responses

Li-Na Cui et al. Chem Asian J. .

Abstract

Dye molecules pre-anchored on titanium oxo clusters (dye-TOCs) are attractive as model compounds of dye-sensitized titanium oxide. To investigate the effects of the dye ligand structures of the dye-TOCs on photocurrent conversion, a series of dye-TOCs with the same Ti6 core structure and different antenna ligands (L) was synthesized and characterized crystallographically. The TOCs have the same structural formula of [Ti6 O4 L2 (O3 PPh)2 (OiPr)10 ]. Two types of dyes with para- or meta-substituted structures were designed and used as the ligands. The results show that charge transfer from the donor group to the TiO core of the TOCs with the para-substituted ligands is stronger than those with the meta-substituted ligands. The steric effect of the ligands also greatly influences the photocurrent density. Larger branched structures of the dye ligands reduce the coverage density of the dye-TOCs on TiO2 electrodes and also weaken the effective covalent bonding of the dye-TOCs on the electrode, and consequently, the photocurrent is decreased.

Keywords: charge transfer; dyes; energy conversion; steric hindrance; titanium oxo clusters.

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References

    1. None
    1. L. Rozes, C. Sanchez, Chem. Soc. Rev. 2011, 40, 1006-1030;
    1. P. Coppens, Y. Chen, E. Trzop, Chem. Rev. 2014, 114, 9645-9661;
    1. N. Li, P. D. Matthews, H.-K. Luo, D. S. Wright, Chem. Commun. 2016, 52, 11180-11190;
    1. W.-H. Fang, L. Zhang, J. Zhang, Chem. Soc. Rev. 2018, 47, 404-421.

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