Synthesis and Characterization of New Luminescent 1,10-Phenanthroline- and Pyridine-Containing π-Conjugated Polymers. Their Optical Response to Protic Acid, M<i><sup>n</sup></i><sup>+</sup>, and Solvents
作者:Takuma Yasuda、Takakazu Yamamoto
DOI:10.1021/ma030280d
日期:2003.10.1
4-didodecyloxybenzene, 1,10-phenanthroline/9,9-dioctylfluorene, or pyridine/1,4-dialkoxybenzene units were prepared by palladium(0)-catalyzed coupling reaction in 84−98% yields. The derived polymers gave Mn of 5400−8800 in GPC analysis, and they possessed good solubility in organic solvents and high thermal stability. Electrochemical reduction (or n-doping) of the polymers proceeded with peaks in the range
通过钯(0)催化制备由交替的1,10-菲咯啉/ 1,4-二十二烷基氧苯,1,10-菲咯啉/ 9,9-二辛基芴或吡啶/ 1,4-二烷氧基苯单元组成的新型π共轭聚合物偶合反应产率为84-98%。衍生的聚合物在GPC分析中得到的M n为5400-8800,并且它们在有机溶剂中具有良好的溶解性和高的热稳定性。与Ag +相比,聚合物的电化学还原(或n掺杂)峰发生在-2.3至-2.6 V范围内的峰值/银 该聚合物具有高光致发光性,在溶液中观察到强烈的蓝色发射,其峰值在412-434 nm范围内。聚合物的发射峰以及UV-vis吸收峰受溶剂极性,质子化和金属络合物形成的影响。当聚合物用三氟乙酸质子化时,观察到吸收峰的大红移(约40-60 nm)。通过聚合物与金属离子的配位来调节聚合物的光致发光性能。从其XRD图谱判断,具有长侧链的聚合物在固态下形成有序结构。