Research

Characterisation of electrochromic viologen-modified nanocrystalline TiO2 films by frequency-resolved optical transmission spectroscopy


Reference:

Garcia-Canadas, J., Peter, L. M. and Wijayantha, K. G. U., 2003. Characterisation of electrochromic viologen-modified nanocrystalline TiO2 films by frequency-resolved optical transmission spectroscopy. Electrochemistry Communications, 5 (3), pp. 199-202.

Related documents:

This repository does not currently have the full-text of this item.
You may be able to access a copy if URLs are provided below.

Abstract

A nanocrystalline TiO2 film electrode on conductive glass was modified with the viologen compound, bis(2-phosphonylethyl)4,4'-bipyridinium dichloride, to form an electrochromic layer. Electrochemical reduction of the modified electrode in 0.1 M LiClO4 gamma-butyrolactone solution is accompanied by a change of colour from transparent to blue. The process was studied by cyclic voltammetry, optical transmittance, electrochemical impedance and modulated transmittance at 370 and 630 nm. The study shows that the dynamic optical responses at the two wavelengths can be used to follow the coupled relaxation of the viologen and electron concentrations in the nanocrystalline layer. (C) 2003 Elsevier Science B.V. All rights reserved.

Details

Item Type Articles
CreatorsGarcia-Canadas, J., Peter, L. M. and Wijayantha, K. G. U.
DOI10.1016/s1388-2481(03)00022-5
DepartmentsFaculty of Science > Chemistry
RefereedYes
StatusPublished
ID Code5020
Additional InformationID number: ISI:000181908900002

Export

Actions (login required)

View Item