文献类型：期刊文献

英文题名：Reversible Acid-Base Responsive Fluorescence Changes of Solutions and Crystals Based on Anthracenyl Pyridyl Derivatives

作者：Zhang, Tian-Le[1,2];Zhao, Chengxi[1,2];Liu, Zhi-Jian[1,2];Xu, Tian-Yi[1,2];Lin, Hui-Yao[1,2];Zhou, Shang-Wu[1,2];Li, Yu-Hao[1,2];Tong, Fei[1,2]

机构：[1]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobil & Dynam Chem, Sch Chem & Mol Engn, Key Lab Adv Mat,Feringa Nobel Prize Scientist Join, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobil & Dynam Chem, Joint Int Res Lab Precis Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr,Inst F, Shanghai 200237, Peoples R China

年份：2023

卷号：7

期号：11

外文期刊名：CHEMPHOTOCHEM

收录：;EI(收录号：20234014828966);WOS:【SCI-EXPANDED(收录号:WOS:001075789200001)】；

基金：This work was financially supported by the National Natural Science Foundation of China (NSFC) (grant NO. 22105071), Shanghai Sailing Program (21YF1409200), Science and Technology Commission of Shanghai Municipality (grant NO. 22ZR1417100). Dr. C. Z. thanks for the financial support from the China Scholarship Council (202106745008). The authors also thank the Research Center of Analysis and Test of East China University of Science and Technology for help with the material characterization.

语种：英文

外文关键词：Fluorescence; Acid-Base Responsive; Crystal Engineering; Crystal Growth; Rewritable Ink

摘要：Organic compounds that can respond to external stimuli and exhibit fluorescence changes have drawn increasing attention recently because of their potential applications in intelligent displays, optical data storage, anticounterfeiting, bioimaging, and sensors. Herein, we have synthesized two new organic compounds based on frameworks of anthracene and pyridine groups: 4-(anthracen-9-yl) pyridine (AN9P) and 4-(anthracen-2-yl) pyridine (AN2P). Both compounds, in solution and solid state, including polycrystals and single crystals, display reversible fluorescence transformations under alternate acid and base treatments. AN9P and AN2P solutions could be regulated to emit white-light luminescence. The photoluminescence of the AN9P and AN2P polycrystals showed fast fluorescence changes with wide ranges (>300 nm) upon alternate acid and base stimuli and still exhibited remarkable fluorescence emission with almost no attenuation after 15 cycles of the reversible process. Both experimental and computational results suggested that the heteroatom nitrogen in the AN9P and AN2P molecules significantly influenced the intra- and intermolecular electronic interactions during the reversible protonation and deprotonation processes, resulting in changes in their frontier molecular orbitals and fluorescence emission characteristics. Our results provide a new facile approach to design molecular structures that realize highly dynamic photoluminescence changes in both liquid solution and solid crystal.