文献类型：期刊文献

英文题名：Smart molecular butterfly: an ultra-sensitive and range-tunable ratiometric thermometer based on dihydrophenazines

作者：Song, Wenxuan[1,2];Ye, Wenqiang[1,2];Shi, Lijiang[1,2];Huang, Jinhai[1,2];Zhang, Zhiyun[1];Mei, Ju[1];Su, Jianhua[1,2];Tian, He[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Inst Fine Chem, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2020

卷号：7

期号：2

起止页码：615

外文期刊名：MATERIALS HORIZONS

收录：;EI(收录号：20200808191882);WOS:【SCI-EXPANDED(收录号:WOS:000514340300023)】；

基金：We acknowledge the financial support from the NSFC/China (21788102, 21875064, 21604023, 21790361 and 21421004), Shanghai Municipal Science and Technology Major Project (Grant No. 2018SHZDZX03), Programme of Introducing Talents of Discipline to Universities (B16017), Shanghai Municipal Science and Technology Committee (17520750100), the Shanghai Sailing Program (16YF1402200), the Fundamental Research Funds for the Central Universities (222201717003 and 222201714011), the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, and Natural Science Foundation of Shanghai (19ZR1412200).

语种：英文

外文关键词：Fluorescence - Quantum chemistry - Excited states

摘要：Ratiometric thermometry with ultra-high sensitivity and tunable response range has been realized in a single molecular system by making full use of the excited-state configuration transformation of a dihydrophenazine derivative (dibenzo[a,c]phenazine-9,14-diylbis(4,1-phenylene))bis(methylene) bis(icosanoate), (DPC). By facilely manipulating the disaggregation and aggregation of DPC, the excited-state configuration transformation could be controlled, thus affording a ratiometric response to temperature change. By altering the composition of the ethanol/glycerol mixtures, the temperature response region could be finely tuned and the overall linear range is as broad as 49.1 degrees C (-11.4-37.7 degrees C). Surprisingly, apart from the relative sensitivity as high as around 2000% per degrees C, which is the highest among all reported luminescent thermometers, and the good repeatability (stability), the present thermometry scheme can even allow the temperature to be read out accurately from the fluorescence (FL) colour since the precise functional relationship between the CIE coordinates of the fluorescence colour and temperature was established. This is unprecedented for luminescent thermometers, meaning that there is no need for the luminescence-based thermometer to rely on a spectrometer. In this way, the application scope of luminescence-based thermometers could be significantly enlarged. The strategy proposed here solves the conflict between high sensitivity and wide temperature response range masterfully.