具光導電性的非線性光學高分子之製備與特性研究

Abstract

之目的乃是製作一種具有光折變效應之高分子聚合物。 有四種成分：具 有電光效應之二階非線性光學分子Disperse- 簡稱DR 19 )與二酸ㄍㄢ Pyromellitic dianhydride(簡稱PMDA)聚合高分子、電荷生成物種Bis(4- dimethylamino-2-hydroxyl-phenyl)e及Cu Phthalocyanine (合而簡稱 CGM)、及以 Polyvinylbutyal (簡作binder 來調整材料厚度。後，其特 性的量測乃是利用四波混合光柵量測法來探討材料的強弱以及建立與洗除 反應。在研究中，改變樣品之組成作因子探討其對光折變之影響，由結果 發現此材料達到穩定應的響應時間依所量測之樣品位置而異，而最高繞射 效率0.001以上。但若在只有二階非階性光學分子DR19單獨存在，發現繞 射效率級數可達0.01以上，但達到穩定繞射時間則時以上。 The objective of the project is focused on understanding the osition of the photorefractive (PR) polymers and workingrs on the photorefractive properties. There are four primaryin the photorefractive polymers: photoinduced charge generation(CGM)、 charge transporting material (CTM)、PVB binder andr optical chromophore (DR-19), reacted with dianhydride (PMDA)NLO polymer PMDA-DR19.study, the diffraction properties of the samples by the four-waveFWM) technique are measured to characterize the PR properties ofmers. It is interesting to find that the photorefractive n the sites of the this sample. The highest diffractionp and the rise time is almost several hundreds seconds. The pureshows an excellent diffraction efficiency up to 0.01, but the over 1 hour