论文部分内容阅读
本文首次用稳态光谱法研究了含芘苯乙烯/二乙烯苯共聚物的光物理行为。结果表明,当共聚物中芘基的摩尔百分数低于0.006％时,其荧光光谱仅呈现芘基的单体荧光,并伴随以0—0发射谱带强度降低和精细振动结构的部分消失;当芘基的含量高于0.3％时,共聚物的荧光相继出现在420,440和475nm处的发射谱带。这一结果可归因于芘基各种基态和激发态聚集体的形成,集中地反映了交联共聚物凝聚态的非均匀性。
The photophysical behavior of pyrene-containing styrene / divinylbenzene copolymer was studied for the first time using steady state spectroscopy. The results showed that when the mole percentage of pyrene groups in the copolymer is less than 0.006%, the fluorescence spectrum of the copolymer shows only pyrene-based monomer fluorescence accompanied by the decrease of the intensity of the 0-0 emission band and the partial disappearance of the fine vibration structure. When the content of pyrenyl group is higher than 0.3%, the fluorescence of the copolymer appears in the emission bands at 420, 440 and 475 nm. This result can be attributed to the formation of various ground and excited state aggregates of pyrenyl groups, which collectively reflect the heterogeneity of the condensed state of the cross-linked copolymer.