Chemical Research in Chinese Universities ›› 2020, Vol. 36 ›› Issue (5): 755-759.doi: 10.1007/s40242-020-0039-9

• Articles • Previous Articles     Next Articles

Acid-base Vapor Sensing Enabled by ESIPT-attributed Cd(II) Coordination Polymer with Switchable Luminescence

FU Pengyan1, MO Junting1, SUN Sisi1, YIN Shaoyun2, WANG Haiping3, PAN Mei1   

  1. 1. MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China;
    2. Analysis and Test Center, Guangdong University of Technology, Guangzhou Higher Education Mega Center, Guangzhou 510006, P. R. China;
    3. School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
  • Received:2020-02-24 Revised:2020-03-17 Online:2020-10-01 Published:2020-10-01
  • Contact: PAN Mei E-mail:panm@mail.sysu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.21771197, 21821003, 21720102007), the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program, China(No.2017BT01C161), and the Fundamental Research Fund(FRF) for the Central Universities, China.

Abstract: Fluorescence materials based on excited state intramolecular proton transfer(ESIPT) have attracted great attention due to the unique four-level energy states. Herein, we report the assembly of a Cd-LF coordination polymer from purposely designed LF(H2hpi2cf) ligand, which can present switchable luminescence behavior by gain or loss protons originated in uncoordinated ESIPT sites and serve as acid-base vapor sensors. Fabricated into in-situ grown film or transparent ink by simple methods, Cd-LF presents facile and portable amine sensor for food spoilage detection and fluorescent anti-counterfeiting ink applications.

Key words: Excited state intramolecular proton transfer, Coordination polymer, Acid-base vapor, Fluorescence sensor, Anti-counterfeiting ink