单分散PPE齐聚物的合成及其荧光性质

合成了PPE的齐聚物{1，4-二3，5-二（3-甲基-3-羟基-1-丁炔基）苯炔基]苯）（4），通过^1H—NMR对其结构进行表征，并对其荧光性质做了研究。研究结果表明引入四个2-甲基-2-羟基-丁炔基作为取代基团后，溶解性提高。取代基的引入导致齐聚物4旋转阻力增大，溶液荧光有明显的精细结构。而4具有较好的荧光单色性，因而是一种潜在的新型荧光发射材料。

Synthesis and the Fluorescence Properties of A New Oligo(p-phenyleneethynylene)

A new oligo(p-phenyleneethynylene) 1,4-bis(3,5-bis(3-methyl-3-ol-1-butynyl)-phenyleneethynylenen)benzene(4)was synthesized and its fluorescence properties were studied.The results show that the introduction of four 3-methyl-3-ol-1-butynyl groups onto 1,4-bis(phenyleneethynylenen)benzene(5) increases the solubility of the oligomer,therefore,improves its processability of forming film.The fine structure of fluorescence emission of 4 suggests that the presence of four 3-methyl-3-ol-1-butynyl groups in the end benzene rings increases the rotation resistance of the benzene rings.The emission of oligomer 4 has better monochromaticity than that of PPEs and better solubility than that of 5,so 4 is a protential blue-light emitting material.