Citation
M. Kidowaki et al., Thermal amplification of photoinduced optical anisotropy of p-cyanoazobenzene polymer films monitored by temperature scanning ellipsometry, APPL PHYS L, 76(11), 2000, pp. 1377-1379
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS LETTERS
ISSN journal
00036951
→ ACNP
Volume
76
Issue
11
Year of publication
2000
Pages
1377 - 1379
Database
ISI
SICI code
0003-6951(20000313)76:11<1377:TAOPOA>2.0.ZU;2-9
Abstract
The in situ observation of thermal alteration of photoinduced optical aniso
tropy of ultrathin films of polymethacrylates having p-cyanoazobenzene side
chains exhibiting amorphous, crystalline, and liquid-crystalline phases wa
s performed by means of temperature scanning ellipsometry. Whereas photogen
erated optical anisotropy of amorphous polymer films disappeared above glas
s transition temperature, the photoinduced anisotropy of films of liquid cr
ystalline and crystalline polymer films was significantly amplified by heat
treatment. In case of crystalline polymers, amplified optical anisotropy w
as maintained even at 300 degrees C. (C) 2000 American Institute of Physics
. [S0003- 6951(00)01811-8].