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Title: A new carboxyl-copper-organic framework and its excellent selective absorbability for proteins

One-pot solvothermal treatments of CuCl{sub 2}·2H{sub 2}O, H{sub 2}L (5-(3-methyl-5-(pyridin-4-yl)-4H-1,2,4-triazol-4-yl) isophthalic acid) and Sm(NO{sub 3}){sub 3}·6H{sub 2}O in water yielded a rare carboxyl-copper-organic framework, [Cu(HL)]{sub n}·nH{sub 2}O (1). The existence of carboxyl groups in compound 1 may be due to the interference of Sm(NO{sub 3}){sub 3}·6H{sub 2}O at the relatively high temperature and autogenous pressure of the reaction. Compound 1 has been characterized by single-crystal X-ray diffraction, PXRD, IR, and elemental analysis. Compound 1 is a 3D coordination polymer, and an xfe-4-Fddd, (4{sup 2}.6.8{sup 3}) topology in 1 is created. In addition, the optical properties have been investigated. Rhodamine B dyeing experiments exhibited that there were residual carboxyl groups on the surface of compound 1. UV–vis results showed that more lysozyme was adsorbed onto the surface of compound 1 than BSA at pH 7.4. At the same time, XPS spectra were also investigated to verify the results. - Graphical abstract: One-pot solvothermal treatments of CuCl{sub 2}·2H{sub 2}O, H2L (5-(3-methyl-5-(pyridin-4-yl)-4H-1, 2, 4-triazol-4-yl) isophthalic acid) and Sm(NO{sub 3}){sub 3}·6H{sub 2}O in water yielded a rare carboxyl-copper-organic framework, [Cu(HL)]n·nH{sub 2}O (1). The existence of carboxyl groups in compound 1 may be due to the interference of Sm(NO{sub 3}){sub 3}·6H{sub 2}O at the relativelymore » high temperature and autogenous pressure of the reaction. Compound 1 has been characterized by single-crystal X-ray diffraction, XRPD, IR, and elemental analysis. Compound 1 is a 3D coordination polymer, and an xfe-4-Fddd, (4{sup 2}.6.8{sup 3}) topology in 1 is created. In addition, the optical properties have been investigated. Rhodamine B dyeing experiments exhibited that there were residual carboxyl groups on the surface of compound 1. UV-vis results showed that more lysozyme was adsorbed onto the surface of compound 1 than that of BSA at pH 7.4. At the same time, XPS spectra were also investigated to verify the results. - Highlights: • A rare carboxyl-copper-organic framework has been hydrothermally synthesized. • An xfe-4-Fddd, (4{sup 2}.6.8{sup 3}) topology in 1 is created. • BSA was significantly less adsorbed onto the carboxylic acid-rich surface than lysozyme. • XPS spectra were also investigated to verify the results of protein adsorption.« less
Authors:
 [1] ;  [2] ; ;  [1] ;  [3] ; ; ; ; ; ;  [1] ;  [1] ;  [3]
  1. Department of Chemistry, Nankai University, Tianjin 300071 (China)
  2. School of Science, Tianjin University, Tianjin 300072 (China)
  3. (China)
Publication Date:
OSTI Identifier:
22443412
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 218; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ADSORPTION; CARBOXYLIC ACIDS; COPPER; COPPER CHLORIDES; HYDROTHERMAL SYNTHESIS; LUMINESCENCE; LYSOZYME; MONOCRYSTALS; NITROGEN OXIDES; OPTICAL PROPERTIES; ORTHORHOMBIC LATTICES; POLYMERS; SPECTRA; SURFACES; WATER; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY