Synthesis, electrochemical and optical studies of new cyanopyridine based conjugated polymers as potential fluorescent materials
作者:K.A. Vishnumurthy、M.S. Sunitha、K. Safakath、Reji Philip、Airody Vasudeva Adhikari
DOI:10.1016/j.polymer.2011.07.012
日期:2011.9
synthesis of four new conjugated polymers (P1–P4) carrying cyanopyridine in their backbone via Wittig condensation technique. Their structures were well established by FTIR, 1H NMR, elemental analysis and gel permeation chromatographic techniques. They exhibited good thermal stability with the onset decomposition temperature around 300–350 °C in nitrogen atmosphere. Further, their electrochemical, linear and
在本交流中,我们描述了通过Wittig缩合技术在其骨架中带有氰基吡啶的四种新型共轭聚合物(P1 - P4)的设计和合成。通过FTIR,1 H NMR,元素分析和凝胶渗透色谱技术已很好地确定了它们的结构。它们表现出良好的热稳定性,在氮气氛中的起始分解温度约为300–350°C。此外,已经研究了它们的电化学,线性和三阶非线性光学性质。该聚合物在1.77–1.99 eV的范围内显示出较低的电化学带隙,并且在各种极性溶剂中均显示出非常好的荧光发射特性。聚合物P1-P4的荧光量子产率发现四氢呋喃(THF)中的三氟甲烷含量分别为35%,42%,38%和34%。对于聚合物中的有效双光子吸收系数(β)被Z扫描技术确定,并且被发现是1.34×10 -11,1.24×10 -11,3.04×10 -11和1.85×10 -11 米/分别为聚合物P1-P4的W。