Core-extended nonastarazines featuring diverse arm configurations synthesized via one-pot sequential reactions†

This article presents the successful synthesis of a novel series of core-extended quasi-planar nonastarazine (NSA) derivatives, featuring diverse arm configurations, through one-pot sequential reactions. Analysis of their single-crystal structures reveals that the three arms are nearly coplanar, ensuring good conjugation for this series of molecules. The UV-vis absorption and photoluminescence spectra of these NSA derivatives indicate that their photophysical properties are primarily dominated by the extended arms, a finding supported by theoretical calculations of frontier orbital energy levels. The designable topological molecular structures and excellent fluorescence properties of these core-extended NSAs endow them with high potential for applications in molecular electronics.