Two linear 1,4‐distyrylbenzenes and five star‐shaped 1,3,5‐tristyrylbenzene derivatives (L_2a and L_2b , Y₀–Y₃ and Y_NBu ) were synthesized and spectroscopically characterized. The photophysical properties, optical response to acid and metal ions were investigated. Upon backbone extension of linear distyrylbenzenes or the introduction of dibutylanilines, the electronic spectra are redshifted. Incorporation of electron‐deficient pyridyl units does not significantly affect the optical properties. Variation of the number of pyridine rings and substitution pattern tune the fluorescence response to acids and metal ions. The novel arenes discriminate Al³⁺, Mn²⁺, Fe³⁺, Fe²⁺, Cd²⁺, Ag⁺ and Hg²⁺.

中文翻译：

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线性和星形的扩展的二苯乙烯基和三苯乙烯基苯：合成，表征和对酸和金属离子的光学响应。

合成了两个线性的1,4-二苯乙烯基苯和五个星形的1,3,5-三苯乙烯基苯衍生物（L _2a 和L _2b ，Y ₀ -Y ₃ 和Y _NBu ）并进行了光谱表征。研究了光物理性质，对酸和金属离子的光学响应。在线性二苯乙烯基苯的骨架延伸或引入二丁基苯胺后，电子光谱发生红移。缺电子的吡啶基单元的结合不会显着影响光学性能。吡啶环数量和取代模式的变化可调节对酸和金属离子的荧光响应。新型芳烃区分Al ³⁺，Mn 2 ⁺，Fe ³⁺，Fe 2 ⁺，Cd 2 ⁺，Ag ⁺和Hg ²⁺。