文献类型：期刊文献

英文题名：Thiophene Decoration Modulated Excimer Emission of Arylamine-Fluorene Luminophore for Visual and Ultrasensitive Physiological Temperature Sensing

作者：Zhang, Hao[1];Wang, Rui[1];Tang, Can[1];Xu, Chengkai[1];Zhai, Shuting[1];Zhao, Weijun[2];Wu, Yongzhen[2]

机构：[1]Zhejiang Univ Technol, State Key Lab Adv Separat Membrane Mat, State Key Lab Green Chem Synth & Convers, Zhejiang Prov Key Lab Biofuel,Coll Chem Engn, Hangzhou 310014, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem,Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Shanghai 200237, Peoples R China

年份：2026

卷号：38

期号：13

起止页码：6747

外文期刊名：CHEMISTRY OF MATERIALS

收录：;EI(收录号：20262921137121);Scopus(收录号：2-s2.0-105044818421);WOS:【SCI-EXPANDED(收录号:WOS:001799434700001)】；

基金：This work was supported by the National Natural Science Foundation of China (Grant No. 22109138).

语种：英文

外文关键词：Association reactions - Luminescence - Physiology - Single crystals - Temperature sensors

摘要：Organic single-luminophore systems featuring regulated monomer-excimer emission constitute an attractive framework for adaptive photonic materials. Here, we report two thiophene-decorated fluorene derivatives, TDDF and MTDDF, designed to modulate molecular packing and excimer formation through heteroarene-involved interactions. Compared with the nonthiophene analogue DDF, thiophene incorporation decreases optical bandgaps, enhances thermal robustness, and promotes close intermolecular association, leading to pronounced excimer emission in aggregated states. Single-crystal analyses reveal that methyl substitution in MTDDF increases intermolecular spacing, enabling a finely tunable balance between monomeric and excimeric states. When dispersed in a fatty-acid phase-change matrix, MTDDF exhibits a distinct, reversible thermally modulated luminescence transition across the physiological temperature range, producing a continuous color shift from yellow-green to blue. This thermally driven packing reorganization enables highly sensitive ratiometric temperature readout, delivering a maximum sensitivity of 44% degrees C-1 near 37 degrees C, among the highest reported for organic luminescent thermometers. This work demonstrates thiophene decoration as an effective approach for stabilizing excimer states and provide a versatile design strategy for advanced thermoresponsive luminophores and stimuli-adaptive photonic materials.