文献类型：期刊文献

英文题名：Photo-thermo-induced room-temperature phosphorescence through solid-state molecular motion

作者：Liu, Xing Wang[1];Zhao, Weijun[2];Wu, Yue[1];Meng, Zhengong[1];He, Zikai[3];Qi, Xin[1];Ren, Yiran[1];Yu, Zhen-Qiang[1];Tang, Ben Zhong[4]

机构：[1]Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen 518071, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Shanghai 200237, Peoples R China;[3]Harbin Inst Technol, Sch Sci, HIT Campus Univ Town, Shenzhen 518055, Peoples R China;[4]Chinese Univ Hong Kong, Shenzhen Inst Aggregate Sci & Technol, Sch Sci & Engn, Shenzhen 518172, Peoples R China

年份：2022

卷号：13

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000821634700020)】；

基金：B.Z.T. gratefully acknowledges support from NSFC/China (21700102), Z.-Q.Y. thanks the support from NSFC/China (21875143) and Innovation Research Foundation of Shenzhen (JCYJ20180507182229597), Y.W. thanks the support from NSFC/China (21908146), W.Z. thanks the support from Shanghai Pujiang Program (20PJ1402900), Shanghai Science and Technology Commission Basic Project-Shanghai Natural Science Foundation (21ZR1418400). Z.H. thanks the support from Innovation Research Foundation of Shenzhen (GXWD20201230155427003-20200728150952003). Special thanks to the Instrumental Analysis Center of Shenzhen University (Lihu Campus).

语种：英文

摘要：The development of non-invasive, rapid responsive phosphorescence is highly desirable but has rarely been described. Herein, the authors designed and prepare a series of molecular rotors containing a room temperature phosphorescence active triazine core and three bromobiphenyl units acting as rotors and demonstrate light stimulus triggered phosphorescence. The development of smart-responsive materials, in particular those with non-invasive, rapid responsive phosphorescence, is highly desirable but has rarely been described. Herein, we designed and prepared a series of molecular rotors containing a triazine core and three bromobiphenyl units: o-Br-TRZ, m-Br-TRZ, and p-Br-TRZ. The bromine and triazine moieties serve as room temperature phosphorescence-active units, and the bromobiphenyl units serve as rotors to drive intramolecular rotation. When irradiated with strong ultraviolet photoirradiation, intramolecular rotations of o-Br-TRZ, m-Br-TRZ, and p-Br-TRZ increase, successively resulting in a photothermal effect via molecular motions. Impressively, the photothermal temperature attained by p-Br-TRZ is as high as 102 degrees C, and synchronously triggers its phosphorescence due to the ordered molecular arrangement after molecular motion. The thermal effect is expected to be important for triggering efficient phosphorescence, and the photon input for providing a precise and non-invasive stimulus. Such sequential photo-thermo-phosphorescence conversion is anticipated to unlock a new stimulus-responsive phosphorescence material without chemicals invasion.