Bunz Uwe H F
School of Chemistry and Biochemistry, Georgia Institute of Technology, 901 Atlanic Drive, Atlanta, GA 30332, USA.
Macromol Rapid Commun. 2009 May 19;30(9-10):772-805. doi: 10.1002/marc.200800775. Epub 2009 May 6.
Poly(aryleneethynylene)s (PAE) are easily synthesized, chemically stable, and color-responsive towards their surroundings. These superbly chromic polymers are attractive as active transducers in sensors and advanced organic electronic devices. PAEs are generally fluorescent with emission maxima ranging from 420-600 nm, and can be either water- or organo-soluble. PAEs from linear building blocks are rigid rod molecules and display a host of supramolecular arrangements in solution and in the solid state. The poly(para-phenyleneethynylene)s (PPE) are lyotropic or thermotropic smectic liquid crystalline. In the solid state, PPEs display lamellar supramolecular structures that lead to distinct stranded nanoscale morphologies. The spectroscopy and the optical properties of the PAEs and in particular of the PPEs are dominated by their conformation, which is influenced by solid-state packing, solvent, temperature and other factors. The presence of twisted and planar forms and their interconversion leads to attractive structure/property relationships; PAEs are of use as ingredients for advanced supramolecular materials.
聚亚芳基乙炔（PAE）易于合成，化学性质稳定，且对周围环境有颜色响应。这些具有出色变色性能的聚合物作为传感器和先进有机电子器件中的活性换能器很有吸引力。PAE通常具有荧光性，发射最大值在420 - 600纳米范围内，并且可以是水溶性或有机可溶性的。由线性结构单元构成的PAE是刚性棒状分子，在溶液和固态中呈现出许多超分子排列。聚对亚苯基乙炔（PPE）是溶致或热致近晶型液晶。在固态中，PPE呈现出层状超分子结构，导致独特的链状纳米级形态。PAE尤其是PPE的光谱和光学性质由其构象主导，构象受固态堆积、溶剂、温度和其他因素影响。扭曲形式和平坦形式的存在及其相互转化导致了吸引人的结构/性能关系；PAE可用作先进超分子材料的成分。
