In order to synthesize a peripherally rigid dendritic donorâacceptor dyad for energy transfer studies, a tritolan dendron based on a tetraphenylmethane scaffold was prepared from New Fuchsin. The dendron showed a small degree of homoconjugation but a large hypochromic effect. Coupling of two such dendrons with an anthracene core led to a dendritic tolanâanthracene dyad whose steady state photophysical studies (UV, PL, PLE) showed vectorial transfer of excitation energy from the surface tolan units to the anthracene core.
为了合成用于能量转移研究的外周刚性树突供体-受体二元组,从
新品红制备了基于四苯
甲烷支架的
三甲苯树突。树突表现出小程度的同源共轭,但具有很大的减色效应。两个这样的树枝与
蒽核的耦合产生了树枝状tolan-
蒽二元组,其稳态光物理研究(UV、PL、PLE)显示激发能从表面tolan单元到
蒽核的矢量转移。