余辉
磷光
卤化物
锌
发光
青色
光致发光
水溶液
量子产额
磷光有机发光二极管
材料科学
光化学
光电子学
化学
无机化学
物理
光学
有机化学
荧光
伽马射线暴
天文
作者
Jian‐Qiang Zhao,Dan‐Yang Wang,T. Yan,Yifan Wu,Zhongliang Gong,Zhiwei Chen,Cheng‐Yang Yue,Dongpeng Yan,Xiao‐Wu Lei
标识
DOI:10.1002/anie.202412350
摘要
Zero‐dimensional (0D) hybrid metal halides have been emerged as room‐temperature phosphorescence (RTP) materials, but synchronous optimization of multiple phosphorescence performance in one structural platform remains less resolved, and stable RTP activity in aqueous medium is also unrealized due to serious instability toward water and oxygen. Herein, we demonstrated a photophysical tuning strategy in a new 0D hybrid zinc halide family of (BTPP)2ZnX4 (BTPP = benzyltriphenylphosphonium, X = Cl and Br). Infrequently, the delicate combination of organic and inorganic species enables this family to display multiple ultralong green afterglow and efficient self‐trapped exciton (STE) associated cyan phosphorescence. Compared with inert luminescence of [BTPP]+ cation, incorporation of anionic [ZnX4]2‐ effectively enhance the spin–orbit coupling effect, which significantly boosts the photoluminescence quantum yield (PLQY) up to 30.66% and 54.62% for afterglow and phosphorescence, respectively. Synchronously, the corresponding luminescence lifetime extend to 143.94 ms and 0.308 μs surpassing the indiscernible phosphorescence of [BTPP]X salt. More importantly, this halide family presents robust RTP emission with nearly unattenuated PLQY in water and harsh condition (acid and basic aqueous solution) over half a year. The highly efficient integrated afterglow and STE phosphorescence as well as ultrahigh aqueous state RTP realize multiple anti‐counterfeiting applications in wide chemical environments.
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