Zhang Hao, Kotlear Eugen A, Kushida Soh, Maier Steffen, Rominger Frank, Freudenberg Jan, Bunz Uwe H F
Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany.
Chemistry. 2020 Jun 26;26(36):8137-8143. doi: 10.1002/chem.202000893. Epub 2020 Jun 8.
Two linear 1,4-distyrylbenzenes and five star-shaped 1,3,5-tristyrylbenzene derivatives (L and L , Y -Y and Y ) 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 Al , Mn , Fe , Fe , Cd , Ag and Hg .
合成了两种线性1,4 - 二苯乙烯基苯和五种星形1,3,5 - 三苯乙烯基苯衍生物（L和L'，Y₁ - Y₃和Y₄），并对其进行了光谱表征。研究了它们的光物理性质、对酸和金属离子的光学响应。在线性二苯乙烯基苯的主链延长或引入二丁基苯胺后，电子光谱发生红移。引入缺电子吡啶单元对光学性质没有显著影响。吡啶环数量和取代模式的变化调节了对酸和金属离子的荧光响应。这些新型芳烃能够区分Al³⁺、Mn²⁺、Fe²⁺、Fe³⁺、Cd²⁺、Ag⁺和Hg²⁺。
