Design and synthesis of two functional coordination polymers based on the 1,1′-bis(3-carboxybenzyl)-4,4′-bipyridinium ligand

Based on the viologen ligand 1,1′-bis(3-carboxylatobenzyl)-4,4′-bipyridinium dichloride (H 2 BcbpyCl 2 ) as the functional subject and two aromatic carboxylic acids ( m -H 2 BDC = 1,3-benzenedicarboxylic acid and H 4 BTEC = 1,2,4,5-benzenetetracarboxylic acid) as auxiliary ligands, two Zn( ii )-base...

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Bibliographic Details
Published in:CrystEngComm 2024-10, Vol.26 (39), p.5518-5524
Main Authors: Chen, Jiali, Fu, Yuying, Liu, Qiaoyun, Shen, Shoujie, Liu, Jinjian
Format: Article
Language:English
Subjects:
Carboxylic acids
Chemical synthesis
Coordination polymers
Dichlorides
Electron transfer
Ligands
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Summary:Based on the viologen ligand 1,1′-bis(3-carboxylatobenzyl)-4,4′-bipyridinium dichloride (H 2 BcbpyCl 2 ) as the functional subject and two aromatic carboxylic acids ( m -H 2 BDC = 1,3-benzenedicarboxylic acid and H 4 BTEC = 1,2,4,5-benzenetetracarboxylic acid) as auxiliary ligands, two Zn( ii )-based coordination polymers, formulated as [Zn(Bcbpy) 0.5 ( m -BDC)] n ( 1 ) and [Zn(Bcbpy) 0.5 (BTEC) 0.5 (H 2 O)] n ( 2 ), have been successfully prepared by solvothermal strategies. Compounds 1 and 2 both have a three-dimensional framework. The two compounds demonstrate reversible photochromic properties owing to the formation of viologen radicals via photoinduced electron transfer. In addition, the photomodulated fluorescence and ink-free erasable printing properties were also studied, which enriched the study of the photophysical properties of the crystals. The different coordination patterns of aromatic carboxylic acids result in two structurally different Zn( ii )-CPs with photochromism, photomodulated fluorescence and ink-free erasable printing properties.
ISSN:1466-8033
1466-8033
DOI:10.1039/d4ce00732h