文献类型：期刊文献

中文题名：基于雷洛昔芬的多重刺激响应性单组分室温磷光分子晶体

英文题名：Tailoring raloxifene into single-component molecular crystals possessing multilevel stimuli-responsive room-temperature phosphorescence

作者：潘智超[1];宋金明[1];张莎莎[1];曾平[1];梅菊[1];曲大辉[1]

机构：[1]East China Univ Sci & Technol, Inst Fine Chem,Key Lab Adv Mat,Joint Int Res Lab P, Feringa Nobel Prize Scientist Joint Res Ctr,Sch Ch, Frontiers Sci Ctr Materiobiol & Dynam Chem, Shanghai 200237, Peoples R China

年份：2024

卷号：69

期号：9

起止页码：1237

中文期刊名：Science Bulletin

外文期刊名：科学通报（英文版）

收录：CSTPCD;;EI(收录号：20241115729881);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:001286921400001)】；CSCD:【CSCD2023_2024】；PubMed;

基金：This work was supported by the National Natural Science Foundation of China (21788102, 22275055, 22025503, 22220102004, 21875064, and 21790361) , Shanghai Science and Technology Commission Basic Project Shanghai Natural Science Foundation (21ZR1417600) , Shanghai Municipal Science and Technology Major Project (2018SHZDZX03) , the Programme of Introducing Talents of Discipline to Universities (B16017) , Shanghai Science and Technology Committee (17520750100) , Science and Technology Commission of Shanghai Municipality (21JC1401700) , and the Fundamental Research Funds for the Central Universities. The authors thank the support of Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization. The authors appreciate Xinyi Zhang, Zhaozhi Zhang, Ya Wang, and Xiufeng Li at the East China University of Science and Technology for their aid in the theoretical calculations and measurements on the photophysical properties.r Science and Technology for their aid in the theoretical calculations and measurements on the photophysical properties.

语种：中文

中文关键词：Crystal engineering;Molecular packing;Organic room-temperature phosphorescence(RTP);Polymorph;Stimuli-responsiveness

外文关键词：Crystal engineering; Molecular packing; Organic room-temperature; phosphorescence (RTP); Polymorph; Stimuli-responsiveness

摘要：Simultaneously achieving room-temperature phosphorescence(RTP) and multiple-stimuli responsiveness in a single-component system is of significance but remains challenging. Crystallization has been recognized to be a workable strategy to fulfill the above task. However, how the molecular packing mode affects the intersystem crossing and RTP lifetime concurrently remains unclear so far. Herein, four economic small-molecular compounds, analogues of the famous drug raloxifene(RALO), are facilely synthesized and further explored as neat single-component and stimuli-responsive RTP emitters via crystallization engineering. Thanks to their simple structures and high ease to crystallize, these raloxifene analogues function as models to clarify the important role of molecular packing in the RTP and stimuliresponsiveness properties. Thorough combination of the single-crystal structure analysis and theoretical calculations clearly manifests that the tight antiparallel molecular packing mode is the key point to their RTP behaviors. Interestingly, harnessing the controllable and reversible phase transitions of the two polymorphs of RALO-OAc driven by mechanical force, solvent vapor, and heat, a single-component multilevel stimuli-responsive platform with tunable emission color is established and further exploited for optical information encryption. This work would shed light on the rational design of multi-stimuli responsive RTP systems based on single-component organics.
Simultaneously achieving room-temperature phosphorescence (RTP) and multiple-stimuli responsiveness in a single-component system is of significance but remains challenging. Crystallization has been recognized to be a workable strategy to fulfill the above task. However, how the molecular packing mode affects the intersystem crossing and RTP lifetime concurrently remains unclear so far. Herein, four economic small-molecular compounds, analogues of the famous drug raloxifene (RALO), are facilely synthesized and further explored as neat single-component and stimuli-responsive RTP emitters via crystallization engineering. Thanks to their simple structures and high ease to crystallize, these raloxifene analogues function as models to clarify the important role of molecular packing in the RTP and stimuli- responsiveness properties. Thorough combination of the single-crystal structure analysis and theoretical calculations clearly manifests that the tight antiparallel molecular packing mode is the key point to their RTP behaviors. Interestingly, harnessing the controllable and reversible phase transitions of the two poly- morphs of RALO-OAc driven by mechanical force, solvent vapor, and heat, a single-component multilevel stimuli-responsive platform with tunable emission color is established and further exploited for optical information encryption. This work would shed light on the rational design of multi-stimuli responsive RTP systems based on single-component organics. (c) 2024 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.