可溶性聚吡咯甲烷的荧光特性研究

Study on Fluorescence Characteristics of Soluble Poly(pyrrolyl methane)

摘要:

对可溶性聚｛（3-丁酰基）吡咯－［2,5-二（对十四烷氧基苯甲烷）］｝（PBPDTBA）的荧光特性进行了系统的研究。结果表明，浓度一定时，PBPDTBA在二氯甲烷中具有最大的荧光量子产率0.118；随着浓度的增加，PBPDTBA在二氯甲烷中的荧光发射峰强度出现先增强后减弱的趋势，当浓度为0.03mg/mL时，溶液具有最大的荧光发射峰强度；不良溶剂的加入导致PBPDTBA的二氯甲烷溶液的荧光发射峰强度下降，且发射峰红移；四氯苯醌对PBPDTBA的荧光具有猝灭效应，当四氯苯醌的含量为0.001mol/L时，PBPDTBA的二氯甲烷溶液的荧光完全消失。

Abstract:

The fluorescence characteristics of soluble Poly{(3-butyryl)pyrrole-[2,5-diyl (p-tetradecoxybenzylidane)]} (PBPDTBA) were studied systematically. The results show that the PBPDTBA has the maximum fluorescence quantum yield of 0.118 in the dichloromethane solvent at a certain concentration among the three solvents. The fluorescence intensity of PBPDTBA in dichloromethane solution increases after the first emergence of the trend of weakening with the concentration increase, and the solution has the greatest fluorescence intensity at 0.03mg/ml. The adding of poor solvent to PBPDTBA dichloromethane solution leads to the decrease of fluorescence intensity and the emission peak red-shift. Chloranil results in the quenching of fluorescence of PBPDTBA, and the fluorescence of PBPDTBA dichloromethane solution disappears completely at the concentration of 1×10-3mol/L.