基于环对苯撑/柱[5]芳烃超分子体系的动态白光精准调控

Dynamic Precision Regulation of White Light Based on the Supramolecular System of Cycloparaphenylene/Pillar[5]arene

摘要: 基于柱芳烃、环对苯撑等大环主体的白光发射体系在超分子化学领域占据着重要作用。我们设计了一种基于二四苯乙烯–咔唑和N-萘二酸酐的D-π-A型客体分子(TCPN)，通过主客体相互作用将其与柱[5]芳烃(P5)、[10]环对苯撑([10]CPP)和[12]环对苯撑([12]CPP)进行自组装，可以构建多组分超分子动态白光发射体系。在该体系中，发射黄色荧光的TCPN和P5的混合物与绿色荧光的[10]CPP以及蓝色荧光的[12]CPP按照特定比例进行组合。这种独特的组合方式不仅可以实现从单色荧光到白光发射的高效转换，还赋予了整个体系优异的动态可调荧光发射特性。

Abstract: Supramolecular systems based on macrocyclic hosts such as pillar[n]arenes and cycloparaphenylenes play an important role in the field of supramolecular chemistry for their white-light emission. We designed a D-π-A type guest molecule (TCPN) based on 1,4-bis(anthracen-9-yl)benzene and N-naphthalic anhydride. Through host-guest interactions, we assembled it with pillar[5]arene (P5), [10]cycloparaphenylene ([10]CPP), and [12]cycloparaphenylene ([12]CPP) to construct a multicomponent supramolecular dynamic white-light-emitting system. In this system, the mixture of TCPN and P5, which emits yellow fluorescence, combined with [10]CPP that emits green fluorescence and [12]CPP that emits blue fluorescence in a specific proportion, can achieve efficient conversion from monochromatic fluorescence to white light emission based on the condition of solvent evaporation, demonstrating excellent dynamically tunable fluorescent emission characteristics.