Spacer Length Influence on the Electrooptic Effect of Methacrylic Azopolymer Series
作者:O. N. Nadtoka、N. A. Davidenko、S. L. Studzinsky、V. G. Syromyatnikov
DOI:10.1080/15421400802463068
日期:2008.12.3
Methacrylic azopolymers with different spacer lengths in side chains have been synthesized. The spectra and kinetics of the electrooptic effect which arises in azo-polymer films after their irradiation by linearly polarized light are investigated. The photo-induced optical anisotropy in the films appears due to a change of the concentration ratio of trans- and cis-isomers of azobenzene fragments. This explains the nature of the electrooptic effect. Owing to a mobility increment of azobenzene fragments by means of the spacer extension, the electrooptic effect becomes more pronounced, and its relaxation time decreases.
OIL REPELLENT COPOLYMER, METHOD FOR ITS PRODUCTION AND OIL REPELLENT TREATMENT SOLUTION
申请人:Hoshino Taiki
公开号:US20090281239A1
公开(公告)日:2009-11-12
To provide an oil repellent copolymer capable of forming an oil repellent film which is excellent in durability.
An oil repellent copolymer characterized by comprising a repeating unit (A) having a polyfluoroalkyl group, a repeating unit (B) having a fluorescent functional group, and a repeating unit (C) having an ester bond other than an ester bond derived from acrylic acid, and/or a hydroxyl group.
US8338529B2
申请人:——
公开号:US8338529B2
公开(公告)日:2012-12-25
Photoinduced Spatial Orientational Order in Methacrylic Azopolymers