ESR and optical study of photo-orientation in azobenzene-containing liquid-crystalline polymer.
نویسندگان
چکیده
We report a comprehensive experimental study of photoinduced processes in azobenzene-containing liquid-crystalline polymer. The kinetic and optical characteristics of the photoisomerization reaction and photo-orientation process have been determined. The spin probe technique has been used to elucidate the details of orientation order and rotational mobility of molecular fragments within the liquid-crystalline polymer. The evolution of orientation order parameters , , and in the course of photoinduced ordering of the material as well as the change of liquid-crystalline domain sizes have been studied quantitatively. The obtained experimental results are compared with the predictions of the existing models of photo-orientation.
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ورودعنوان ژورنال:
- The journal of physical chemistry. B
دوره 117 40 شماره
صفحات -
تاریخ انتشار 2013