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Solvent‐Dependent Synthesis of Porous Anionic Uranyl–Organic Frameworks Featuring a Highly Symmetrical (3,4)‐Connected ctn or bor Topology for Selective Dye Adsorption
Author(s) -
Hu KongQiu,
Jiang Xiang,
Wang CongZhi,
Mei Lei,
Xie ZhenNi,
Tao WuQing,
Zhang XiaoLin,
Chai ZhiFang,
Shi WeiQun
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201604225
Subject(s) - uranyl , dissolution , adsorption , topology (electrical circuits) , crystallization , density functional theory , solvent , porosity , chemistry , crystal engineering , crystallography , inorganic chemistry , materials science , crystal structure , computational chemistry , organic chemistry , ion , supramolecular chemistry , mathematics , combinatorics
Two highly symmetrical (3,4)‐connected uranyl–organic frameworks (UOFs) were synthesized by a judicious combination of D 3 h ‐symmetrical triangular [UO 2 (COO) 3 ] − and T d symmetrical tetrahedral tetrakis(4‐carboxyphenyl)methane (H 4 MTB). These two as‐synthesized UOFs possess similar structural units and coordination modes but totally different topological structures, namely ctn net and bor net. Solvent‐induced interpenetration and a morphology change are observed. The two compounds exhibit crystal transformation via a dissolution–crystallization process. Adsorption experiments in CH 3 OH solution indicate that both of them can selectively remove positively charged dyes over negatively charged and neutral dyes. Moreover, the electronic structural and bonding properties of the two compounds were systematically explored by density functional theory (DFT) calculations.