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Issue 48, 2019
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A novel photochromic coordination polymer based on a robust viologen ligand exhibiting multiple detection properties in the solid state

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Abstract

A new photochromic and porous Cd(II) coordination polymer (CP) has been synthesized by using a robust viologen ligand, named 1-(3-carboxybenzyl)-4,4′-bipyridinium chloride (m-Hbcbpy·Cl) and CdCl2·2H2O. This CP (Cd-bcbpy) shows a fast response and reversible photochromism through the progress of ET due to the formation of viologen radicals. Cd-bcbpy shows a sharp response to blue rays and selectively detects organic amine molecules, which are electron rich, in the solid state due to the electron-deficient properties of m-Hbcbpy·Cl. The detection of organic amine and benzene molecules has been confirmed by the visual color changing phenomenon and luminescence quenching experiment. Cd-bcbpy can detect aniline in very low concentrations (10−4 M). In addition, the structure of Cd-bcbpy maintains stability in aqueous solutions of hydrochloric acid with the pH ranging from 1 to 7. The photo-controlled luminescence properties of this CP, during the coloration–decoloration process, have been studied.

Graphical abstract: A novel photochromic coordination polymer based on a robust viologen ligand exhibiting multiple detection properties in the solid state

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Publication details

The article was received on 27 Sep 2019, accepted on 18 Nov 2019 and first published on 19 Nov 2019


Article type: Paper
DOI: 10.1039/C9DT03835C
Dalton Trans., 2019,48, 17852-17857

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    A novel photochromic coordination polymer based on a robust viologen ligand exhibiting multiple detection properties in the solid state

    H. Y. Wang, Z. M. Tu and H. Zhang, Dalton Trans., 2019, 48, 17852
    DOI: 10.1039/C9DT03835C

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