Abstract
We report experimental evidence for an efficient nonlinear optical polar ordering induced by wire poling under high field conditions in thin films of the amorphous p(DR1M) side-chain azobenzene homopolymer. Unusual enhancements of the absorption coefficient and d33 susceptibility along the poling direction are observed. Preliminary circular dichroism experiments have revealed the formation of a weak optically active supramolecular structure which becomes strongly active after irradiating the poled material with a circularly polarized light. Similar to a liquid-crystal polymer mesophase, it is thus possible to control the chirality in this efficiently poled amorphous achiral azobenzene polymer, in which circularly polarized irradiations with opposite handedness produce enantiomeric structures.
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