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研究了聚合物P1(金属识别单元为2,2’-联吡啶)和P2(金属识别单元为1,10-菲咯啉)的固体薄膜与金属离子作用时的荧光猝灭效应,发现对于大部分过渡金属离子,聚合物P2具有明显增强的猝灭响应.P1中反式构象的2,2’-联吡啶两吡啶环呈20°的二面角,在构象转变受限的固体薄膜中金属离子络合需要克服一定的扭曲阻力,而P2中平面结构的1,10-菲咯啉在金属离子络合时则不需要构象转变.因此,P2可能更适合固体薄膜的器件应用,例如金属离子传感.
The fluorescence quenching effect of polymer P1 (2,2’-dipyridyl metal recognition unit) and P2 (metal recognition unit 1,10-phenanthroline) on metal ions was studied. It was found that for large Partially transition metal ions, polymer P2 has a significantly enhanced quenching response The transconjugated 2,2’-dipyridyl dipyridyl ring in pi has a 20 [deg.] Dihedral angle and the metal in the solid conformation-limited solid film Ion complexation needs to overcome certain torsional resistance, while planar planar 1,10-phenanthroline in P2 does not require conformational transition when complexed with metal ions. Thus, P2 may be better suited for device applications in solid thin films such as metal ions Sensing.