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Crystal structures, red-shifted luminescence and iodide-anion recognition properties of four novel D–A type Zn(ii) complexes

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Abstract

Four D–A type Zn(II) coordination complexes, [Zn(C29H29N3O2)·(CH3OH)]·(CH3OH) (1), Zn2(C74H90N6O4)·(CH3OH) (2), [Zn(C30H28N4O2)·(CH3OH)]·(CH3OH) (3) and [Zn(C38H44N4O2)·(C2H5OH)]·(C2H5OH) (4), were designed, synthesized, and studied. Their fluorescence properties in the solid state and in THF solution were comprehensively analysed based on their single-crystal structures. The results showed that the red-shift of fluorescence emission from complexes 1 to 4 was successfully achieved via the strategy of enhancing intramolecular charge transfer (ICT) effects by increasing the number of electron-pulling and pushing groups gradually. Meanwhile, because of the fluorescence recognition abilities of these four complexes towards iodide anions in THF, they could be regarded as potential fluorescent sensors for I in this organic solution in the future.

Graphical abstract: Crystal structures, red-shifted luminescence and iodide-anion recognition properties of four novel D–A type Zn(ii) complexes

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Article information


Submitted
20 Dec 2019
Accepted
24 Feb 2020
First published
25 Feb 2020

Dalton Trans., 2020, Advance Article
Article type
Paper

Crystal structures, red-shifted luminescence and iodide-anion recognition properties of four novel D–A type Zn(II) complexes

J. Song, P. Wang, L. Yan, L. Hao, M. A. Khan, G. Liu and H. Li, Dalton Trans., 2020, Advance Article , DOI: 10.1039/C9DT04840E

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