摘要
通过Heck缩聚反应首次合成了以三苯胺为核的"A2+B2+B3"支化聚芴/聚对苯乙烯撑(PFO/PPV)共轭聚合物,通过FT-IR1、H-NMR、元素分析、GPC和TGA等对其进行了表征,该支化聚合物具有良好的溶解性和热稳定性。紫外吸收光谱、荧光分光光度计等手段表征了聚合物的光学性质及均相荧光淬灭性质,结果表明,该聚合物的二氯甲烷溶液对4-硝基甲苯、2,4-二硝基甲苯具有良好的淬灭性。作为新型荧光传感材料,该聚合物在含硝基芳香烃爆炸性物质的检测上有着潜在的应用价值。
The branched conjugated polymer of Polyfluorene/Poly （p-Phenylene vinylenes） （PFO/PPV） was synthesized based on＂A2 ＋ B2 ＋ B3＂approach method containing triphenyamine as its core through Heck condensation coupling . The structure of the result polymer was characterized by FT-IR, ^1H-NMR, Elemental Analysis , GPC. The branched polymer has good solubility and thermal stability. The optical and fluorescence quenching properties in dilute solution of the polymer was revealed by UV, PL Spectroscopy. It shows PL quenching sensitivity towards 4- NT and DNT in CH2C12. It indicates that the polymer has the potential to be used as fluorescence sensing material for explosive.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2009年第1期41-44,共4页
Polymer Materials Science & Engineering
关键词
支化共轭聚合物
Heek缩聚
荧光淬灭
branched conjugated polymer
Heck condensation
fluorescence quenching
