Synthesis and chiroptical properties of chiral azoaromatic dendrimers with a C<sub>3</sub>-symmetrical core
作者:Luigi Angiolini、Tiziana Benelli、Loris Giorgini
DOI:10.1002/chir.20712
日期:2010.1
with particular attention to the effects induced by changing the electron‐withdrawing group in the chromophoric moiety and to their optical activity. A strong nonlinear enhancement of chiroptical properties related to the number of chiral units linked to the symmetrical core is observed in these derivatives, which indicates the presence of conformationally chiral substructures. Chirality, 2010. © 2009
从1,3,5-三氯三羰基苯为核心分子开始合成了新的手性偶氮芳族树枝状大分子体系。(S的同时存在)-3-羟基吡咯烷基环作为光学活性部分,偶氮苯供体-受体共轭系统作为具有永久偶极矩的光致变色基团,使得这些系统可能成为纳米技术中先进应用的材料。表征所有获得的化合物时,应特别注意改变发色基团中的吸电子基团所引起的作用及其光学活性。在这些衍生物中观察到与连接到对称核的手性单元数目有关的手性的强烈非线性增强,这表明存在构象手性亚结构。《手性》,2010年。©2009 Wiley-Liss,Inc.。