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Porphyrin–Alkaline Earth MOFs with the Highest Adsorption Capacity for Methylene Blue
Author(s) -
Hou Yuxia,
Sun Junshan,
Zhang Daopeng,
Qi Dongdong,
Jiang Jianzhuang
Publication year - 2016
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.201600162
Subject(s) - porphyrin , adsorption , alkaline earth metal , chemistry , supramolecular chemistry , methylene , methylene blue , alkali metal , metal organic framework , metal , inorganic chemistry , selectivity , metal ions in aqueous solution , crystallography , crystal structure , photochemistry , medicinal chemistry , organic chemistry , catalysis , photocatalysis
A series of four porphyrin–alkaline earth metal– organic frameworks [Mg(HDCPP) 2 (DMF) 2 ] n ⋅(H 2 O) 7 n ( 1 ), [Ca(HDCPP) 2 (H 2 O) 2 ] n (DMF) 1.5 n ( 2 ), [Sr(DCPP)(H 2 O)(DMA)] n ( 3 ), and [Ba(DCPP)(H 2 O)(DMA)] n ( 4 ) was isolated for the first time from solvothermal reaction between metal‐free 5,15‐di(4‐ carboxyphenyl)porphyrin (H 2 DCPP) and alkaline earth ions. Single‐crystal X‐ray diffraction analysis reveals the 2D and 3D supramolecular network with periodic nanosized porosity for 1 / 2 and 3 / 4 , respectively. The whole series of MOFs, in particular, compounds 1 and 2 with intrinsic low molecular formula weight, exhibit superior adsorption performance for methylene blue (MB) with excellent capture capacity as represented by the thus far highest adsorption amount of 952 mg g −1 for 2 and good selectivity, opening a new way for the potential application of the main group metal‐based MOFs.