Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
Photoisomerization of trans-Stilbene in Poly(vinyl alcohol) and Importance of Solute–Polymer Interactions
Yoshinori Hirata
Author information

2015 Volume 88 Issue 2 Pages 303-307


We have measured the polarized absorption and picosecond transient absorption spectra of trans-stilbene in poly(vinyl alcohol) (PVA) films. We found that the dichroic ratio in the first absorption band and the lifetime of the S1 state increased as the hold-time was increased. The hold-time is the duration in which sample films were kept wet before they were dried. For similar values of the hold-time, the absorption spectra showed a red shift and slight sharpening. These results indicate that during the hold-time, solute–polymer interactions become strong; these interactions not only act as the orienting force during film stretching but also act as friction that opposes isomerization.

Content from these authors

This article cannot obtain the latest cited-by information.

© 2015 The Chemical Society of Japan
Previous article Next article