用于气相冰毒检测的区域规整的高通透聚合物

Regioregular and Permeable Polymers for Methamphetamine Vapor Detection

本文设计了区域规整的高通透性聚合物材料并应用于甲基苯丙胺(冰毒)蒸气的检测中。通过聚合物区域规整性的控制以及侧链上大位阻基团的引入,增强了材料通透性,并为气体分子增加了有效传感位点。另外,引入大位阻基团也能在一定程度上减少聚合物链间π-π堆叠造成的荧光自淬灭。此外,材料拥有良好的荧光量子效率和光稳定性。通过合成区域规整的高通透性聚合物,聚合物薄膜对胺类检测的传感都有所增强,其中,对甲基苯丙胺的蒸气检测材料的荧光增强达到了最高的106%,为甲基苯丙胺蒸气的荧光增强检测提供了新的思路。

A regioregular and permeable conjugated polymer was synthesized and studied and employed in Methamphetamine( MA) Vapor Detection. The regioregular polymer structure and the incorporation of big sterically hindered groups could both increase the effective sensing sites in polymer films for MA molecule by providing more cavities for MA molecules and improving the permeability of polymer films. Besides,the incorporation of big sterically hindered groups could also decrease the π-π stacked interchain interaction between polymer chains which usually causes a decrease of self-quenching in polymers. In addition to the good fluorescent quantum efficiency and photostability,the regioregular and permeable conjugated polymer showed excellent response in 300 s with a fluorescent enhancement of 106%.