579503-84-7Relevant academic research and scientific papers
Creation of azobenzene-based photochromic amorphous molecular materials - Synthesis, glass-forming properties, and photochromic response
Tanino, Takahiro,Yoshikawa, Satoru,Ujike, Toshiki,Nagahama, Daisuke,Moriwaki, Kazuyuki,Takahashi, Toru,Kotani, Yoshiko,Nakano, Hideyuki,Shirota, Yasuhiko
experimental part, p. 4953 - 4963 (2009/10/02)
A novel family of azobenzene-based photochromic amorphous molecular materials has been created. They were found to readily form amorphous glasses with well-defined glass-transition temperatures and to exhibit photochromism as amorphous films as well as in solution. It was found that their quantum yields of trans-cis photoisomerization were smaller as amorphous films than in solution and that the backward cis-trans thermal isomerization reactions as amorphous films were either accelerated or retarded relative to those in solution, depending upon their molecular structures. In addition, the rate acceleration for the cis-trans thermal isomerization as amorphous films relative to solution was found to be more prominent as the irradiation time for generating the cis-isomer became shorter. The Royal Society of Chemistry 2007.
