Lei Wang, Yingzhu Sun, Changjiang Yu*, Wenlong Ma, Yingjian Shang, Ling Ding, Ting Wang, Xing Guo, Jiawen Zhang, Yang Li*, Erhong Hao, Guan-Wu Wang* and Lijuan Jiao*,
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Electron-Donating Boronic Salicylhydrazones as Dual-State Emissive Fluorophores for Lipid Droplet Imaging
We report a novel class of electron-donating boron-chelated salicylhydrazone (BOSHY) fluorophores synthesized through an efficient “two-step, one-pot” condensation strategy. These structurally versatile dyes incorporate a stereogenic boron center within a rigid 6,7-fused bicyclic architecture, demonstrating remarkable dual-state emission characteristics with high quantum yields (up to 95% in solution and 74% in the solid state) and large Stokes shifts up to 7200 cm–1, along with promising chiroptical activity. Notably, selected BOSHY derivatives display outstanding specificity for lipid droplet imaging in live cells.
期刊介绍:
Organic Letters invites original reports of fundamental research in all branches of the theory and practice of organic, physical organic, organometallic,medicinal, and bioorganic chemistry. Organic Letters provides rapid disclosure of the key elements of significant studies that are of interest to a large portion of the organic community. In selecting manuscripts for publication, the Editors place emphasis on the originality, quality and wide interest of the work. Authors should provide enough background information to place the new disclosure in context and to justify the rapid publication format. Back-to-back Letters will be considered. Full details should be reserved for an Article, which should appear in due course.