Charge transfer complex-forming dyes incorporated in solid polymer electrolyte for optical humidity sensing

Authors
Somani, PR Viswanath, AK Aiyer, RC Radhakrishnan, S
Citation
Pr. Somani et al., Charge transfer complex-forming dyes incorporated in solid polymer electrolyte for optical humidity sensing, SENS ACTU-B, 80(2), 2001, pp. 141-148
Citations number
20
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
09254005 → ACNP
Volume
80
Issue
2
Year of publication
2001
Pages
141 - 148
Database
ISI
SICI code
0925-4005(20011120)80:2<141:CTCDII>2.0.ZU;2-R
Abstract
Our experimental observations shows that certain dyes when incorporated in solid polymer electrolytes (SPE) can serve as an excellent candidates for o ptical humidity sensing. Crystal Violet (CV) and Methylene Blue (MB) are in corporated in PVA/H3PO4, which is known to be a SPE and a good proton condu ctor. Films of PVA/H3PO4 containing dyes are studied for use in optical hum idity sensing and the interesting results are discussed in this paper. A me chanism is proposed for the changes observed in the optical properties of s uch films by the variation of humidity. (C) 2001 Elsevier Science B.V. All rights reserved.