In situ conversion of photoaligned liquid crystalline polymer films to polarized fluorescent films by direct replacement of end groups.

Abstract

We have systematically studied the photoinduced reorientation of photoresponsive polymers, especially focusing on the use of N-benzylideneaniline (NBA) as a photoresponsive group. NBA moieties can photoalign based on E-Z-E photoisomerization and can be easily changed to form functional-oriented groups via hydrolysis and re-condensation with functional moieties. In this study, we have achieved in situ conversion to polarized light-emitting films by direct replacement of the end groups.