Novel Functional TPE Polymers: Aggregation‐Induced Emission, pH Response, and Solvatochromic Behavior,Macromolecular Rapid Communications

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Novel Functional TPE Polymers: Aggregation‐Induced Emission, pH Response, and Solvatochromic Behavior
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2018-12-03 , DOI: 10.1002/marc.201800774
Wei Huang ₁ , Markus Bender ₁ , Kai Seehafer ₁ , Irene Wacker _{2,

3} , Rasmus R. Schröder _{2,

3} , Uwe H. F. Bunz _{1,

3}

Affiliation

Four tetraphenylethylene (TPE)‐based aryleneethynylene polymers with amino or nitro groups are reported. They display strong aggregation‐induced emission (AIE). The functional groups trigger acidochromic changes in the emission behavior of these polymers. Amino‐substituted P1–P3 exhibit pH response through protonation of the amino groups. The position of the amino groups (on TPE or the side chains) influences the fluorescence intensity or emission wavelength as a response to different pH values. Nitro‐P4 is solvatochromic due to its donor–acceptor structure. AIE, intramolecular charge transfer, and Förster resonance energy transfer define the fluorescence‐based performance of the polymers. The amino‐functionalized TPE polymers show excellent nitroarene‐sensing performance. P4 is less effective than the amino polymers. A sensor array based on P1–P3 identifies 12 different nitroarenes in water.

中文翻译：

新型功能性TPE聚合物：聚集诱导的发射，pH响应和溶剂变色行为

据报道有四种具有氨基或硝基基团的基于四苯乙烯（TPE）的亚芳基乙炔聚合物。它们显示出强大的聚集诱导发射（AIE）。官能团触发了这些聚合物的发射行为的酸性变色变化。氨基取代的P1-P3通过氨基的质子化表现出pH响应。氨基的位置（在TPE或侧链上）会影响荧光强度或发射波长，作为对不同pH值的响应。硝基P4是它的供体-受体结构溶剂化所致。AIE，分子内电荷转移和Förster共振能量转移定义了聚合物基于荧光的性能。氨基官能化的TPE聚合物具有出色的硝基芳烃传感性能。P4不如氨基聚合物有效。基于P1-P3的传感器阵列可识别水中的12种不同的硝基芳烃。

更新日期：2018-12-03

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