磷光
分子间力
氧气
分子
猝灭(荧光)
氧传感器
光化学
兴奋剂
荧光
化学
Crystal(编程语言)
材料科学
分析化学(期刊)
光电子学
有机化学
光学
物理
程序设计语言
计算机科学
作者
Yusheng Zhou,Wei Qin,Cheng Du,Haiyang Gao,Fangming Zhu,Guodong Liang
标识
DOI:10.1002/anie.201906312
摘要
Abstract An unconventional organic molecule (TBBU) showing obvious long‐lived room temperature phosphorescence (RTP) is reported. X‐ray single crystal analysis demonstrates that TBBU molecules are packed in a unique fashion with side‐by‐side arranged intermolecular aromatic rings, which is entirely different from the RTP molecules reported to date. Theoretical calculations verify that the extraordinary intermolecular interaction between neighboring molecules plays an important role in RTP of TBBU crystals. More importantly, the polymer film doped with TBBU inherits its distinctive RTP property, which is highly sensitive to oxygen. The color of the doped film changes and its RTP lifetime drops abruptly through a dynamic collisional quenching mechanism with increasing oxygen fraction, enabling visual and quantitative detection of oxygen. Through analyzing the grayscale of the phosphorescence images, a facile method is developed for rapid, visual, and quantitative detection of oxygen in the air.
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