Center of Excellence for Innovation in Chemistry (PERCH-CIC) and Department of Chemistry, Faculty of Science, Mahidol University, Bangkok 10400, Thailand.
Department of Materials Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand.
Chem Commun (Camb). 2022 Aug 23;58(68):9468-9471. doi: 10.1039/d2cc03461a.
Heptagon-embedded polycyclic aromatic dicarboximides were developed as new push-pull fluorescent dyes through palladium-catalysed [4+3] annulation followed by nucleophilic substitution. The introduction of a seven-membered ring in these push-pull systems can efficiently modulate the optical properties leading to an enhancement of the fluorescence quantum yields up to 0.93 with color tunable emission covering the visible-NIR spectrum.
七元环嵌入的多环芳香二酰亚胺作为新型推拉式荧光染料，通过钯催化的[4+3]环加成反应，再进行亲核取代反应来合成。在这些推拉体系中引入七元环可以有效地调节光学性质，从而使荧光量子产率提高至 0.93，发射颜色可调谐，涵盖可见-近红外光谱。
