磷光
兴奋剂
材料科学
系统间交叉
三苯基氧化膦
光电子学
纳米技术
荧光
化学
有机化学
三苯基膦
物理
催化作用
激发态
核物理学
量子力学
单重态
作者
Yu Tian,Jie Yang,Zhenjiang Liu,Mingxue Gao,Xiaoning Li,Weilong Che,Manman Fang,Zhen Li
标识
DOI:10.1002/ange.202107639
摘要
Abstract Compared with inorganic long‐lasting luminescent materials, organic room temperature phosphorescent (RTP) ones show several advantages, such as flexibility, transparency, solubility and color adjustability. However, organic RTP materials close to commercialization are still to be developed. In this work, we developed a new host–guest doping system with stimulus‐responsive RTP characteristics, in which triphenylphosphine oxide ( OPph 3 ) acted host and benzo(dibenzo)phenothiazine dioxide derivatives as guests. Turn‐on RTP effect was realized by mixing them together through co‐crystallization or grinding, in which the efficient energy transfer from host to guest and the strong intersystem crossing (ISC) ability of the guest have played significant role. Further on, multistage stimulus‐responsive RTP characteristics from grinding to chemical stimulus were achieved via introducing pyridine group into the guest molecule. In addition, the anti‐counterfeiting printings were realized for these materials through various methods, including stylus printing, thermal printing and inkjet printing, which brings RTP materials closer to commercialization.
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