Design and synthesis of metal ion-recognition-induced conjugated polymers: An approach to metal ion sensory materials
Design and synthesis of metal ion-recognition-induced conjugated polymers: An approach to metal ion sensory materials
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DOI：
10.1021/ja962229d
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发表时间：
1997-01
影响因子：
15
通讯作者：
B. Wang;M. Wasielewski
中科院分区：
文献类型：
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作者：
B. Wang;M. Wasielewski
报道了两种2,2′-联吡啶基苯乙烯基聚合物的合成及其金属离子响应性能。这些聚合物在无金属状态下被设计成部分共轭，而在暴露于金属离子时被设计成完全共轭，这样离子诱导的共轭增强可以被转导成可测量的信号。发现这些聚合物具有高度的离子变色效应，具有多种过渡族和主族金属离子，不包括碱和碱土族金属离子。例如，聚合物暴露于金属离子时的吸收带和荧光发射带都可以红移至120 nm，这取决于存在的金属离子和使用的聚合物。
The synthesis and metal ion responsive properties of two 2,2‘-bipyridyl-phenylene-vinylene-based polymers is reported. These polymers are designed to be partially conjugated in their metal-free state and fully conjugated when exposed to metal ions so that the ion-induced conjugation enhancement can be transduced into a measurable signal. It is found that these polymers exhibit highly ionochromic effects with a wide variety of transition and main group metal ions excluding metal ions of the alkali and alkaline earth groups. For instance, both absorption and fluorescence emission bands of the polymers upon exposure to metal ions can be red-shifted up to 120 nm, depending on the metal ions present and the polymers used.