CHANGES IN THE MORPHOLOGY AND OPTICAL-ABSORPTION OF COLLOIDAL SILVER REDUCED WITH FORMIC-ACID IN THE POLYMER MATRIX UNDER UV IRRADIATION

Authors
ROGACH AL SHEVCHENKO GP AFANASEVA ZM SVIRIDOV VV
Citation
Al. Rogach et al., CHANGES IN THE MORPHOLOGY AND OPTICAL-ABSORPTION OF COLLOIDAL SILVER REDUCED WITH FORMIC-ACID IN THE POLYMER MATRIX UNDER UV IRRADIATION, JOURNAL OF PHYSICAL CHEMISTRY B, 101(41), 1997, pp. 8129-8132
Citations number
39
Categorie Soggetti
Chemistry Physical
Journal title
JOURNAL OF PHYSICAL CHEMISTRY B
ISSN journal
15206106 → ACNP
Volume
101
Issue
41
Year of publication
1997
Pages
8129 - 8132
Database
ISI
SICI code
1089-5647(1997)101:41<8129:CITMAO>2.0.ZU;2-D
Abstract
The influence of the UV irradiation on the morphology and optical prop erties of nanosize colloidal silver particles formed in the poly(vinyl alcohol) matrix containing Ag+ and formic acid was investigated. Form ation of both filament and ultrafine silver particles accompanied by a strong blue shift of the silver plasmon absorption band from 425 to 3 85 nm was observed under UV irradiation. The mechanism of the electron accumulation on silver particles is proposed to explain the observed morphological and spectral changes.