ISSN: 0256-1115 (print version) ISSN: 1975-7220 (electronic version)
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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received April 19, 2017
Accepted December 1, 2017
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Photocatalytic removal of NOx over immobilized BiFeO3 nanoparticles and effect of operational parameters

Research Laboratory of Petroleum Technology, Faculty of Chemistry, University of Tabriz, Tabriz, Iran 1Department of Applied Chemistry, Faculty of Chemistry, University of Urmia, Urmia, Iran 2School of Occupational Safety and Health, Chung Shan Medical University, Taichung, 402, Taiwan, ROC 3Research Laboratory of Reactor and Catalyst, Faculty of Chemical Engineering, University of Tabriz, Tabriz, Iran
Korean Journal of Chemical Engineering, April 2018, 35(4), 994-999(6), 10.1007/s11814-017-0331-7
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Abstract

We prepared and characterized co-crystals of the antidepressant drug agomelatine with pharmaceutically acceptable coformers for enhanced solubility. A novel agomelatine-resorcinol (AGO-RES, 2 : 1) co-crystal was synthesized and its crystal structure was confirmed via single crystal X-ray diffraction. The AGO-RES co-crystal structure was created through the O-H…O and N-H…O hydrogen bonding between the phenolic OH of RES and the amide group of AGO. The chemical structure of two AGO co-crystals was characterized by FT-IR and Raman spectroscopies, whereas the solution behavior was determined by the intrinsic dissolution rate. When tested in water, both AGORES and AGO-HYQ form-I co-crystals showed higher apparent solubility than pure AGO. But the resulting AGO solution in a supersaturated state partially precipitated into specific crystal forms of AGO. As anticipated, the intrinsic dissolution rate of AGO was substantially enhanced by the co-crystal forms, which signifies that the bioavailability of AGO can be increased via co-crystal formulation approach.

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