Synthesis and characterization of rhenium(I) 4,4′-dicarboxy-2,2′-bipyridine tricarbonyl complexes for solar energy conversion

被引：11

作者：

Komreddy, Venugopal ^{[1
]}

Ensz, Kevin ^{[1
]}

Nguyen, Huy ^{[1
]}

Rillema, D. Paul ^{[1
]}

机构：

[1] Wichita State Univ, Dept Chem, Wichita, KS 67260 USA

来源：

INORGANICA CHIMICA ACTA | 2020年 / 511卷 / 511期

基金：

美国国家科学基金会;

关键词：

Rhenium(1); Carboxylic acid; Electronic spectra; Acid/base; DSSC; PHOTOPHYSICAL PROPERTIES; EXCITED-STATES; DYE; RUTHENIUM(II); REDUCTION; LIGANDS; TIO2; CO2; LUMINESCENCE; BIPYRIDYL;

D O I：

10.1016/j.ica.2020.119815

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis of a series of rhenium(I) tricarbonyl complexes containing 4,4 '-dicarboxy-2,2 '-bipyridine (dcbpy) and various halide or pseudohalide ligands is reported. Deprotonation of the carboxylates occurs in basic medium resulting in upfield H-1 NMR shifts for the protons of the carboxyl groups attached to 2,2 '-bipyridine. Metal-to-ligand charge transfer (MLCT) due to d pi -> pi* transitions systematically shift in the halide series from 382 nm for Re(dcbpy)(CO)(3)F to 436 nm for Re(dcbpy)(CO)(3)I. The compounds emit in the 600-650 nm region and have emission lifetimes greater than 50 ns. The solar energy conversion efficiency is less than 1% when TiO2- Re(dcbpy)(CO)(3)X, (X = F, CN, SCN, Br, I), photoanodes are used in Gratzel cells.

引用

页数：8

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