High contrast temperature-responsive luminescence materials from purely organic molecule with persistent room-temperature phosphorescence

被引：5
作者：
Chen, Lifen [1 ]
Tan, Ji-Hua [1 ]
Yang, Zhiwen [1 ]
Qiu, Zhipeng [1 ]
Mu, Yingxiao [1 ]
Yang, Zhiyong [2 ]
Chen, Wen-Cheng [1 ]
Ji, Shaomin [1 ]
Chi, Zhenguo [2 ]
Huo, Yanping [1 ,3 ]
机构：
[1] Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Peoples R China
[2] Sun Yat Sen Univ, Guangdong Engn Technol Res Ctr Highperformance Or, State Key Lab OEMT, PCFM Lab,GDHPPC Lab, Guangzhou 510275, Peoples R China
[3] South China Univ Technol, Guangdong Prov Key Lab Luminescence Mol Aggregate, Guangzhou 510640, Peoples R China
来源：
JOURNAL OF LUMINESCENCE | 2021年 / 230卷
基金：
中国国家自然科学基金;
关键词：
Persistent room-temperature phosphorescence; Temperature-responsive luminescence; Tunable emission color; Triplet excitons; FLUORESCENCE; DESIGN; THERMOMETER; OXYGEN; HOST;
D O I：
10.1016/j.jlumin.2020.117731
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Organic materials with temperature-responsive luminescence (TRL) generally exhibit step-change of luminescent intensity during temperature variation. The persistent room-temperature phosphorescence (pRTP) materials have significant advantages in long-lived triplet excitons, which are promising new type of TRL materials. Here, a D-A type benzophenone derivative, namely BrBDBF, has been designed and synthesized. Interestingly, two crystals (BrBDBF-Y and BrBDBF-W) with different pRTP properties are found for BrBDBF. In addition, the bright crystal BrBDBF-Y presented a temperature-induced tunable emission color-switching from bluish-green to yellow. While the crystal BrBDBF-W with very weak emission exhibited high contrast "turn-on" luminescence which increased about 40 times as the temperature dropping. These results demonstrate that BrBDBF is a new type of TRL material and provides opportunities for the advanced application of organic pRTP materials.
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页数：6
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