College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China.
Chem Commun (Camb). 2020 Nov 14;56(88):13638-13641. doi: 10.1039/d0cc05538g. Epub 2020 Oct 16.
A star-shaped triphenylamine-benzene-1,3,5-tricarbohydrazide molecule with a twisted molecular conformation was found to display amazing multifunctional optical properties. The design of peripheral triphenylamine units and a central benzene connected with hydrazide groups leads to the formation of rare polymorphic properties in the presence of multiple flexible chains. Two polymorphs with different fluorescence colors exhibited bathochromic mechanofluorochromic activities with high contrast due to a crystalline-to-amorphous transition.
一种具有扭曲分子构象的星形三苯胺-苯-1,3,5-三酰肼分子被发现具有惊人的多功能光学性质。外围三苯胺单元和连接酰肼基团的中心苯的设计导致在存在多个柔性链的情况下形成罕见的多晶型性质。两种具有不同荧光颜色的多晶型体由于结晶-无定形转变而表现出明显的机械变色荧光活性，具有高对比度。
