Assembly and disassembly activity of two AIEE model compounds and its potential application

Haile Zhou; Binsheng Yang; Guangming Wen; Xiangquan Hu; Bin Liu

doi:10.1016/j.talanta.2018.03.007

Assembly and disassembly activity of two AIEE model compounds and its potential application

Talanta. 2018 Jul 1:184:394-403. doi: 10.1016/j.talanta.2018.03.007. Epub 2018 Mar 8.

Authors

Haile Zhou¹, Binsheng Yang¹, Guangming Wen², Xiangquan Hu³, Bin Liu⁴

Affiliations

¹ Key Laboratory of Chemical Biology and Molecular Engineering, Ministry of Education, Institute of Molecular Science, Shanxi University, PR China.
² Department of Chemistry, Shanxi University, Taiyuan, PR China.
³ Key Laboratory of Chemical Biology and Molecular Engineering, Ministry of Education, Institute of Molecular Science, Shanxi University, PR China; Department of Chemistry, University of Memphis, Memphis, TN, United States. Electronic address: huxiangquan1@foxmail.com.
⁴ Key Laboratory of Chemical Biology and Molecular Engineering, Ministry of Education, Institute of Molecular Science, Shanxi University, PR China. Electronic address: liubin@sxu.edu.cn.

PMID: 29674060
DOI: 10.1016/j.talanta.2018.03.007

Abstract

Aggregation-induced emission (AIE) has received great attention. In this paper, Cu²⁺ induced self-assembly and H₂S induced disassembly of two aggregation-induced emission enhancement (AIEE) compounds were reported in this paper. Two salicylaldehyde azine Schiff base were synthesized and characterized. It is found that 1 and 2 are AIEE active molecular both in aqueous solution and crystal state with strong yellow fluorescence. Theirs fluorescence can be selectively quenched in the presence of Cu²⁺ ions with the formation of self-assembly system [1-Cu²⁺]_n. The interaction mechanism has been researched by multiple means. Depending on this reaction, energy changes (ΔG) from 1 to [1-Cu²⁺]_n was also estimated by Scatchard formula. Moreover, the quenching fluorescence was further restored by H₂S both in tube and live cells along with the releasing of AIEE molecular 1. That is, a reversible process between AIEE, self-assembly and disaggregation can be found in the model compound.

Keywords: Aggregation–induced emission; Assembly; Disassembly; Salicylaldehyde azine; ΔG.