Issue 11, 2020

Two donor–acceptor (D–A) type Zn(ii) complexes as fluorescent probes for highly selective detection of iodide

Abstract

Two D–A type Zn(II) coordination complexes ([Zn2(L1)2(MeCN)(MeOH)]·(MeCN) (1) and [ZnL2(H2O)] (2)) were synthesized from diaminomaleonitrile-based (DMN) Schiff-base ligands (L1 = 2-amino-3-[(2-hydroxynaphthalen-1-ylmethylene)-amino]-but-2-enedinitrile, L2 = 2-[(4-chloro-2-hydroxybenzylidene)-amino]-3-[(2-hydroxynaphthalen-1-ylmethylene)-amino]-but-2-enedinitrile). Based on the weak blue fluorescence in THF solution and the bright yellow fluorescence in the solid state, the ligand L1 shows obvious aggregation induced emission (AIE) in a THF–H2O solvent system. The fluorescence emission of complexes 1 and 2 exhibits a significant red-shift relative to that of the ligand in THF solution. Interestingly, because of aggregation caused by the interaction between L1 and iodide (I), complexes 1 and 2 exhibit excellent selectivity for fluorescence detecting iodide, and the quenching efficiency of 2 with iodide is higher than that of 1.

Graphical abstract: Two donor–acceptor (D–A) type Zn(ii) complexes as fluorescent probes for highly selective detection of iodide

Supplementary files

Article information

Article type
Paper
Submitted
11 Dec 2019
Accepted
05 Feb 2020
First published
07 Feb 2020

CrystEngComm, 2020,22, 2103-2109

Two donor–acceptor (D–A) type Zn(II) complexes as fluorescent probes for highly selective detection of iodide

H. Su, L. Hao, W. Hussain, Z. Li and H. Li, CrystEngComm, 2020, 22, 2103 DOI: 10.1039/C9CE01953G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements