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Title: Efficient light-to-electrical energy conversion with dithiocarbamate-ruthenium polypyridyl sensitizers

Abstract

New Ru(dcbH)(dcbH{sub 2})(L) sensitizers, where L is diethyldithiocarbamate, dibenzyldithiocarbamate, or pyrrolidinedithiocarbamate, dcbH is 4-(COOH)-4{prime}-(COO{sup {minus}})-2,2{prime}-bipyridine, and dcbH{sub 2} is 4,4{prime}-(COOH){sub 2}-2,2{prime}-bipyridine, have been synthesized, characterized, and anchored to nanocrystalline TiO{sub 2} films for light to electrical energy conversion in regenerative photoelectrochemical cells with I{sup {minus}}/I{sub 2} acetonitrile electrolyte. The sensitizers have intense metal-to-ligand charge-transfer (MLCT) bands centered {approximately}380 and 535 mm that sensitize TiO{sub 2} over a notably broad spectral range. The photophysical and photoelectrochemical studies of these materials are contrasted with cis-Ru(dcbH{sub 2}){sub 2}(NCS){sub 2}, which is one of the most efficient sensitizers reported to date. Photophysical measurements show that the high photocurrent observed for cis-Ru(dcb){sub 2}(NCS){sub 2}TiO{sub 2} is due to efficient and rapid iodide oxidation.

Authors:
;  [1]; ;  [2]
  1. Centro di Studio su Fotoreattivita e Catalisi CNR, Ferrara (Italy). Dipt. di Chimica dell`Universita
  2. Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Chemistry
Publication Date:
Sponsoring Org.:
USDOE, Washington, DC (United States); North Atlantic Treaty Organization, Brussels (Belgium)
OSTI Identifier:
669920
Resource Type:
Journal Article
Journal Name:
Inorganic Chemistry
Additional Journal Information:
Journal Volume: 37; Journal Issue: 18; Other Information: PBD: 7 Sep 1998
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; RUTHENIUM COMPLEXES; CARBAMATES; ORGANIC POLYMERS; CHEMICAL PREPARATION; TITANIUM OXIDES; PHOTOELECTROCHEMICAL CELLS; SENSITIZERS; SOLAR CELLS; PHOTOCURRENTS

Citation Formats

Argazzi, R, Bignozzi, C A, Hasselmann, G M, and Meyer, G J. Efficient light-to-electrical energy conversion with dithiocarbamate-ruthenium polypyridyl sensitizers. United States: N. p., 1998. Web. doi:10.1021/ic980340+.
Argazzi, R, Bignozzi, C A, Hasselmann, G M, & Meyer, G J. Efficient light-to-electrical energy conversion with dithiocarbamate-ruthenium polypyridyl sensitizers. United States. https://doi.org/10.1021/ic980340+
Argazzi, R, Bignozzi, C A, Hasselmann, G M, and Meyer, G J. 1998. "Efficient light-to-electrical energy conversion with dithiocarbamate-ruthenium polypyridyl sensitizers". United States. https://doi.org/10.1021/ic980340+.
@article{osti_669920,
title = {Efficient light-to-electrical energy conversion with dithiocarbamate-ruthenium polypyridyl sensitizers},
author = {Argazzi, R and Bignozzi, C A and Hasselmann, G M and Meyer, G J},
abstractNote = {New Ru(dcbH)(dcbH{sub 2})(L) sensitizers, where L is diethyldithiocarbamate, dibenzyldithiocarbamate, or pyrrolidinedithiocarbamate, dcbH is 4-(COOH)-4{prime}-(COO{sup {minus}})-2,2{prime}-bipyridine, and dcbH{sub 2} is 4,4{prime}-(COOH){sub 2}-2,2{prime}-bipyridine, have been synthesized, characterized, and anchored to nanocrystalline TiO{sub 2} films for light to electrical energy conversion in regenerative photoelectrochemical cells with I{sup {minus}}/I{sub 2} acetonitrile electrolyte. The sensitizers have intense metal-to-ligand charge-transfer (MLCT) bands centered {approximately}380 and 535 mm that sensitize TiO{sub 2} over a notably broad spectral range. The photophysical and photoelectrochemical studies of these materials are contrasted with cis-Ru(dcbH{sub 2}){sub 2}(NCS){sub 2}, which is one of the most efficient sensitizers reported to date. Photophysical measurements show that the high photocurrent observed for cis-Ru(dcb){sub 2}(NCS){sub 2}TiO{sub 2} is due to efficient and rapid iodide oxidation.},
doi = {10.1021/ic980340+},
url = {https://www.osti.gov/biblio/669920}, journal = {Inorganic Chemistry},
number = 18,
volume = 37,
place = {United States},
year = {Mon Sep 07 00:00:00 EDT 1998},
month = {Mon Sep 07 00:00:00 EDT 1998}
}