Temperature Tuned Two Novel 3D Zn(II) Metal Organic Frameworks Exhibiting Luminescence Properties

Two novel porous zinc metal-organic frameworks (MOFs) 1 and 2 based on 1,1′-bis-((3,5-dicarboxybenzyl)-4,4′-bipyridinium) dichloride (H 4 bdcbpy·2Cl) ligand have been successfully synthesized by solvothermal reactions at different temperatures. Compounds 1 and 2 have the same composition but crystal...

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Bibliographic Details
Published in:Russian journal of inorganic chemistry 2021-07, Vol.66 (7), p.982-988
Main Authors: Minghui Zuo, Zhou, Jian, Yu, Jinhuan, Cui, Shuxin
Format: Article
Language:English
Subjects:
Adsorption
Chemical synthesis
Chemistry
Chemistry and Materials Science
Coordination Compounds
Dichlorides
Fluorescence
Formic acid
High temperature
Inorganic Chemistry
Low temperature
Luminescence
Metal-organic frameworks
Optical properties
Zinc
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Summary:Two novel porous zinc metal-organic frameworks (MOFs) 1 and 2 based on 1,1′-bis-((3,5-dicarboxybenzyl)-4,4′-bipyridinium) dichloride (H 4 bdcbpy·2Cl) ligand have been successfully synthesized by solvothermal reactions at different temperatures. Compounds 1 and 2 have the same composition but crystallize in different crystal systems. Compound 1 synthesized at low temperature crystallizes in the monoclinic system, and compound 2 prepared at high temperature crystallizes in the rhombohedral system. The structural differences of two compounds indicate that temperature plays an important role in the formation of the Zn-based MOFs. The Zn 2+ ions are bridged by deprotonated formic acid moieties to form a 3D network in both compounds. H 4 bdcbpy·2Cl provided an acidic environment, which led to the decomposition of DMF into a rare C 3 H 2 N 2 2+ cation. Nitrogen adsorption measurement displays that the adsorption capacity of 1 is 711 m 2 g –1 . The fluorescence spectra of compound 1 shows that there is a strong emission peak at 527 nm.
ISSN:0036-0236
1531-8613
DOI:10.1134/S0036023621070159