文献类型：期刊文献

英文题名：Twofold rigidity activates ultralong organic high-temperature phosphorescence

作者：Chen, Kaijun[1];Zhang, Yongfeng[2];Lei, Yunxiang[1];Dai, Wenbo[1];Liu, Miaochang[1];Cai, Zhengxu[2];Wu, Huayue[1];Huang, Xiaobo[1];Ma, Xiang[3,4]

机构：[1]Wenzhou Univ, Sch Chem & Mat Engn, Wenzhou 325035, Peoples R China;[2]Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 10081, Peoples R China;[3]East China Univ Sci & Technol, Key Lab Adv Mat, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Meilong Rd 130, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2024

卷号：15

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001160036000015)】；

基金：This work was supported by the financial support from the National Natural Science Foundation of China (No. 22105148, received by Y.L.; No. 22071184, received by X.H.; No. 22125803, and 22020102006, received by X.M.), the Zhejiang Provincial Natural Science Foundation of China (No. LY20B020014, received by X.H.), and Xinmiao Foundation of Zhejiang Province (No. 2023R451051, received by K.C.). Thank the Security Office of Wenzhou University and the Special Police Brigade of Wenzhou Fire Rescue Detachment for providing fire-fighting equipment and technical guidance.

语种：英文

摘要：A strategy is pioneered for achieving high-temperature phosphorescence using planar rigid molecules as guests and rigid polymers as host matrix. The planar rigid configuration can resist the thermal vibration of the guest at high temperatures, and the rigidity of the matrix further enhances the high-temperature resistance of the guest. The doped materials exhibit an afterglow of 40 s at 293 K, 20 s at 373 K, 6 s at 413 K, and a 1 s afterglow at 433 K. The experimental results indicate that as the rotational ability of the groups connected to the guests gradually increases, the high-temperature phosphorescence performance of the doped materials gradually decreases. In addition, utilizing the property of doped materials that can emit phosphorescence at high temperatures and in high smoke, the attempt is made to use organic phosphorescence materials to identify rescue workers and trapped personnel in fires. Obtaining high-temperature phosphorescence in organic materials can potentially lead to broader applications, but can be challenging to achieve. Here, the authors report the use of rigid molecules as both host and guest to give temperature resistance and therefore high-temperature phosphorescence.