A flexible aromatic tetracarboxylate as a new linker for coordination polymers

Two new cadmium(II)-based materials, featuring two-dimensional (2D) [Cd2(µ6-deta)(bpy)(H2O)]n (1) and three-dimensional (3D) [Cd2(µ5-deta)(bpy)2(H2O)]n (2) structures, were constructed by the hydrothermal method from 2,3′,4′,5-diphenyl ether tetracarboxylic acid (H4deta) as an unexplored linker in research on coordination polymers (CPs) and 2,2′-bipyridine (bpy) as a mediator of crystallization. Microcrystalline samples of 1 and 2 were analyzed by IR/PXRD/EA/TGA and X-ray diffraction using single crystals. Structures and topologies of CPs 1 and 2 were established, revealing a 4,6L45 topological layer in 1 and a 3,5T1 topological framework in 2. Structural differences for 1 and 2 are attributed to distinct molar ratios between Cd2+ and bpy during the hydrothermal synthesis. Luminescence and thermal behavior of the obtained materials were also investigated. The present work opens up the use of an unexplored 2,3′,4′,5-diphenyl ether tetracarboxylic acid as a versatile and flexible linker toward the generation of functional coordination polymer materials. © 2020 by the authors. Licensee MDPI, Basel, Switzerland.

Authors
Gu W.1 , Gu J.2 , Kirillov A.M. 3, 4
Journal
Publisher
MDPI AG
Number of issue
2
Language
English
Status
Published
Number
84
Volume
10
Year
2020
Organizations
  • 1 School of Life Sciences, Fudan University, Shanghai, 200438, China
  • 2 Colleague of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, China
  • 3 Centro de Química Enstrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, Lisbon, 1049-001, Portugal
  • 4 Research Institute of Chemistry, Peoples’s Friendship University of Russia (RUDN University), 6Miklukho-Maklaya st., Moscow, 117198, Russian Federation
Keywords
Carboxylic acids; Coordination polymers (CPs); Hydrothermal generation; Luminescent materials; Metal; Organic frameworks (MOFs); Topological analysis
Date of creation
02.11.2020
Date of change
02.11.2020
Short link
https://repository.rudn.ru/en/records/article/record/64978/