Liquid Crystallinity and Other Properties in Complexes of Cationic Azo-Containing Surfactomesogens with Poly(styrenesulfonate)
Liquid Crystallinity and Other Properties in Complexes of Cationic Azo-Containing Surfactomesogens with Poly(styrenesulfonate)
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DOI：
10.1021/ma9002566
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发表时间：
2009-06
期刊：
影响因子：
5.5
通讯作者：
Qian Zhang;C. Bazuin
中科院分区：
文献类型：
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作者：
Qian Zhang;C. Bazuin
在严格的条件下制备了一系列化学计量离子键合侧链聚合物复合物，由聚苯乙烯磺酸盐（PSS）和带有己基和癸基间隔基的季铵官能化含偶氮表面活性剂（SM）构建，并在严格的条件下制备并彻底干燥，并研究了它们潜在的热致液晶（LC）性能。 SM 系列由八个具有不同极性的不同取代的偶氮苯核组成。在其 Br 中和形式下，它们通常在高温下结晶（具有乙胺连接基团的那些具有非常慢的重结晶动力学）。只有一些配合物在未退火的形式下表现出液晶特性，而其他几种配合物需要在适当的温度下进行极长的退火时间才能显示液晶特性，这归因于半刚性的PS主链、相对较高的分子量和强离子相互作用，这些相互作用极大地阻碍了链重组动力学达到平衡。其中德西...
A series of stoichiometric ionically bonded side-chain polymer complexes, constructed from poly(styrenesulfonate) (PSS) and quaternary ammonium-functionalized azo-containing surfactomesogens (SMs) with hexyl and decyl spacers, were prepared under rigorous conditions and thoroughly dried, and their potential thermotropic liquid crystal (LC) properties were investigated. The SM series consists of eight differently substituted azobenzene cores with a range of polarities. In their Br-neutralized form, they are generally crystalline to high temperatures (those with an ethylamine linking group having very slow recrystallization kinetics). Only some of the complexes showed LC properties in unannealed form, while several others required exceedingly long annealing times at appropriate temperatures to reveal LC character, attributed to the semirigid PS backbone, relatively high molecular weight, and strong ionic interactions that greatly retard the kinetics of chain reorganization toward equilibrium. Among the decy...