1
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Singh A, Kociok-Köhn G, Dutta A, Kumar A, Muddassir M. Diaminopyridine Hg(II)-based 1D supramolecular polymer: Crystallographic and computational insights into spodium bonding. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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2
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Crystal engineering with energetic picric acid halogen-based salts: Promising properties of a new family of insensitive materials. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.132381] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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3
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Crystal structure, Hirshfeld surfaces and vibrational studies of tetrachlorocobaltate hybrid perovskite salts NH3(CH2)nNH3CoCl4 (n = 4, 9). J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131997] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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4
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Structural characterisation, Hirshfeld surfaces, DSC, periodic DFT modeling, vibrational and optical study of heptylenediammonium pentachlorobismuthate H3N(CH2)7NH3BiCl5. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2021.122805] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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5
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Capellades G, Bonsu JO, Myerson AS. Impurity incorporation in solution crystallization: diagnosis, prevention, and control. CrystEngComm 2022. [DOI: 10.1039/d1ce01721g] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
This work highlights recent advances in the diagnosis, prevention, and control of impurity incorporation during solution crystallization.
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Affiliation(s)
- Gerard Capellades
- Department of Chemical Engineering, Henry M. Rowan College of Engineering, Rowan University, Glassboro, New Jersey 08028, USA
| | - Jacob O. Bonsu
- Department of Chemical Engineering, Henry M. Rowan College of Engineering, Rowan University, Glassboro, New Jersey 08028, USA
| | - Allan S. Myerson
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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6
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Ouasri A, Rhandour A, Saadi M, El Ammari L. Crystal structure, powder X-Ray diffraction, Hirshfeld, thermal, Infrared-Raman studies, and symmetry analysis of the relationship between the novel tetragonal [(CH3)4N]2SiF6 and the cubic Fm3m antifluorite structure. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131455] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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[Diaquo{bis(p-hydroxybenzoato-κ1O1)}(1-methylimidazole- κ1N1)}copper(II)]: Synthesis, crystal structure, catalytic activity and DFT study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Broadhurst ET, Xu H, Parsons S, Nudelman F. Revealing the early stages of carbamazepine crystallization by cryoTEM and 3D electron diffraction. IUCRJ 2021; 8:860-866. [PMID: 34804540 PMCID: PMC8562671 DOI: 10.1107/s2052252521010101] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 09/28/2021] [Indexed: 06/13/2023]
Abstract
Time-resolved carbamazepine crystallization from wet ethanol has been monitored using a combination of cryoTEM and 3D electron diffraction. Carbamazepine is shown to crystallize exclusively as a dihydrate after 180 s. When the timescale was reduced to 30 s, three further polymorphs could be identified. At 20 s, the development of early stage carbamazepine dihydrate was observed through phase separation. This work reveals two possible crystallization pathways present in this active pharmaceutical ingredient.
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Affiliation(s)
- Edward T. Broadhurst
- EaStCHEM School of Chemistry and Centre for Science at Extreme Conditions, The University of Edinburgh, King’s Buildings, West Mains Road, Edinburgh EH9 3FJ, United Kingdom
| | - Hongyi Xu
- Materials and Environmental Chemistry, Stockholm University, Stockholm, SE-106 91, Sweden
| | - Simon Parsons
- EaStCHEM School of Chemistry and Centre for Science at Extreme Conditions, The University of Edinburgh, King’s Buildings, West Mains Road, Edinburgh EH9 3FJ, United Kingdom
| | - Fabio Nudelman
- EaStCHEM School of Chemistry and Centre for Science at Extreme Conditions, The University of Edinburgh, King’s Buildings, West Mains Road, Edinburgh EH9 3FJ, United Kingdom
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9
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In-silico methods of cocrystal screening: A review on tools for rational design of pharmaceutical cocrystals. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2021.102527] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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10
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Roy M, Biswal D, Pramanik NR, Drew MG, Paul S, Kachhap P, Haldar C, Chakrabarti S. Structural elucidation, DFT calculations and catalytic activity of dioxomolybdenum(VI) complexes with N N donor ligand: Role of halogen atom coordinated to the molybdenum centre. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115144] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Kamaal S, Mehkoom M, Ali A, Afzal SM, Alam MJ, Ahmad S, Ahmad M. Potential Third-Order Nonlinear Optical Response Facilitated by Intramolecular Charge Transfer in a Simple Schiff Base Molecule: Experimental and Theoretical Exploration. ACS OMEGA 2021; 6:6185-6194. [PMID: 33718709 PMCID: PMC7948218 DOI: 10.1021/acsomega.0c05557] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 01/28/2021] [Indexed: 06/01/2023]
Abstract
A Schiff base, namely, 4-[(2-hydroxy-3-methoxybenzylidene) amino] benzoic acid (L1), has been synthesized by the condensation reaction. It has been characterized by Fourier transform infrared spectroscopy , UV-vis spectroscopy, single-crystal X-ray diffraction, and DFT/B3LYP calculations. Single-crystal X-ray crystallographic analysis revealed that L1 exists in the zwitterionic (N-H···...O) form. The supramolecular interactions were investigated by Hirshfeld surface analysis. In addition, third-order nonlinear optical (NLO) properties of L1 were also investigated. The nonlinear refractive index (n2), nonlinear absorption coefficient (β), and the third-order NLO susceptibility (χ(3)) have been estimated at different concentrations and at different laser powers using close and openaperture Z-scan data. The values of the parameters were found to be varying almost linearly with concentration and power. The present study revealed the utility of the material for various optoelectronic devices such as optical switches, optical data storage devices, and optical sensors. The optical limiting study reveals that this material can also be exploited as an instrument protector from unwanted laser illumination. Furthermore, the NLO behavior of L1 has also been studied by B3LYP/6-311++G(d,p) results.
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Affiliation(s)
- Saima Kamaal
- Department
of Applied Chemistry, ZHCET, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India
| | - Mohd Mehkoom
- Department
of Physics, Aligarh Muslim University, Aligarh 202002, India
| | - Arif Ali
- Department
of Applied Chemistry, ZHCET, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India
| | - S. M. Afzal
- Department
of Physics, Aligarh Muslim University, Aligarh 202002, India
| | | | - Shabbir Ahmad
- Department
of Physics, Aligarh Muslim University, Aligarh 202002, India
| | - Musheer Ahmad
- Department
of Applied Chemistry, ZHCET, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh 202002, India
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12
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Exploration of synthesis, structural aspects, DFT studies and bio-efficacy of some new DHA-benzohydrazide based copper(II) complexes. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129460] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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Chavda BR, Socha BN, Pandya SB, Chaudhary KP, Padariya TJ, Alalawy MD, Patel MK, Dubey RP, Patel UH. Coordination behavior of dinuclear silver complex of sulfamethoxazole with solvent molecule having static rotational disorder: Spectroscopic characterization, crystal structure, Hirshfeld surface and antimicrobial activity. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.129777] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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14
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Patel AK, Jadeja RN, Butcher R, Kesharwani MK, Kästner J, Muddassir M. New copper(II) complexes with (Z)-N′-{(2-hydroxynaphthalen-1-yl}methylene)acetohydrazide]: X-ray structure, Hirshfeld analysis, X-band electron paramagnetic resonance spectra, TD-DFT calculations and superoxide dismutase mimetic activity. Polyhedron 2021. [DOI: 10.1016/j.poly.2020.114969] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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15
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Chen L, Huang Y. The guest polymer effect on the dissolution of drug–polymer crystalline inclusion complexes. RSC Adv 2021; 11:13091-13096. [PMID: 35423840 PMCID: PMC8697331 DOI: 10.1039/d1ra01926k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 03/29/2021] [Indexed: 11/21/2022] Open
Abstract
A drug–polymer crystalline inclusion complex (IC) is a novel solid form of drug, in which drug molecules form parallel channels, and linear polymer chains reside in these channels. In this study, we used carbamazepine (CBZ) as a model drug, and directly studied the effect of different types of guest polymers on the dissolution properties of drug–polymer ICs. We successfully prepared ICs formed from CBZ with hydrophilic poly(ethylene glycol) (PEG) and hydrophobic poly(ε-caprolactone) (PCL), respectively, and confirmed that these two drug–polymer ICs both had the same channel-type crystal structure as CBZ form II. During the dissolution test, CBZ–PEG IC showed a faster dissolution rate compared to CBZ form II under both sink and non-sink conditions. CBZ–PCL IC was confirmed to be more stable in aqueous medium, as the guest polymer PCL delayed its transformation to less-soluble crystals during dissolution. Guest polymers have significant influence on the dissolution of drug–polymer inclusion complex crystals.![]()
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Affiliation(s)
- Lu Chen
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Yanbin Huang
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- China
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16
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Saini Y, Mahajan S, Kapoor KK, Hundal G, Seth SK. Diverse structural assemblies of a series of ninhydrin derivatives: Quantitative analyses from experimental and theoretical studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2020.128920] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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17
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Lara-Cerón JA, Jiménez-Pérez VM, Molina-Paredes AA, Sánchez M, Dias HVR, Ramírez-Montes PI, Muñoz-Flores BM. Preferential intermolecular interactions in a racemic mixture of amino acid Schiff base, conformational structures in solid state, and DFT studies. NEW J CHEM 2021. [DOI: 10.1039/d0nj04720a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In this work, we report the green synthesis of a Shiff base [N-(2-hydroxy-1-naphthylidene)-l-phenylalanine (1)] derived from an α-amino acid through an ultrasound-assisted synthesis method with excellent chemical yield in a short period of time.
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Affiliation(s)
- Jesús A. Lara-Cerón
- Universidad Autónoma de Nuevo León
- Facultad de Ciencias Químicas
- Ciudad Universitaria
- Nuevo León
- Mexico
| | - Víctor M. Jiménez-Pérez
- Universidad Autónoma de Nuevo León
- Facultad de Ciencias Químicas
- Ciudad Universitaria
- Nuevo León
- Mexico
| | - Areli A. Molina-Paredes
- Universidad Autónoma de Nuevo León
- Facultad de Ciencias Químicas
- Ciudad Universitaria
- Nuevo León
- Mexico
| | - Mario Sánchez
- Centro de Investigación en Materiales Avanzados
- S.C., Alianza Norte 202
- PIIT
- Carretera Monterrey-Aeropuerto Km. 10
- Apodaca
| | - H. V. Rasika Dias
- Department of Chemistry and Biochemistry
- The University of Texas at Arlington
- Arlington
- USA
| | - Pedro I. Ramírez-Montes
- Universidad Nacional Autónoma de México
- Facultad de Estudios Superiores Cuautitlán
- Departamento de Matemáticas
- 54714 Cuautitlán Izcalli
- Mexico
| | - Blanca M. Muñoz-Flores
- Universidad Autónoma de Nuevo León
- Facultad de Ciencias Químicas
- Ciudad Universitaria
- Nuevo León
- Mexico
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18
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Avvadukkam J, Badiadka N, Kunhanna SB, Kumar MS. A facile synthesis of pyrano[2,3‐
d
:6,5‐
d
′]dipyrimidines via microwave‐assisted
m
ulticomponent reactions catalyzed by β‐cyclodextrin. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.4207] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | - Narayana Badiadka
- Department of Studies in Chemistry Mangalore University Mangalore India
| | | | - Madan S. Kumar
- DST PURSE Lab, Vijnana Bhavan University of Mysore Mysuru India
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19
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Şen N, Dursun H, Hope KS, Nazir H, Acar N, Atakol O. Towards low-impact-sensitivity through crystal engineering: New energetic co-crystals formed between Picric acid, Trinitrotoluene and 9-Vinylanthracene. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128614] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Tripathi S, Hossain A, Seth SK, Mukhopadhyay S. Quantitative insights into the crystal structure of a mixed-ligand Co(III) complex: Experimental and theoretical studies. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128207] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Role of metal Cu(II) and Ag(I) on molecular structure of 4-amino-N-(2, 6-dimethoxypyrimidin-4-yl) benzenesulfonamide in presence of 3-methyl pyridine: Synthesis, spectral, crystallographic and DNA interaction studies. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114696] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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22
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Urwin S, Levilain G, Marziano I, Merritt JM, Houson I, Ter Horst JH. A Structured Approach To Cope with Impurities during Industrial Crystallization Development. Org Process Res Dev 2020; 24:1443-1456. [PMID: 32905065 PMCID: PMC7461122 DOI: 10.1021/acs.oprd.0c00166] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Indexed: 11/28/2022]
Abstract
The perfect separation with optimal productivity, yield, and purity is very difficult to achieve. Despite its high selectivity, in crystallization unwanted impurities routinely contaminate a crystallization product. Awareness of the mechanism by which the impurity incorporates is key to understanding how to achieve crystals of higher purity. Here, we present a general workflow which can rapidly identify the mechanism of impurity incorporation responsible for poor impurity rejection during a crystallization. A series of four general experiments using standard laboratory instrumentation is required for successful discrimination between incorporation mechanisms. The workflow is demonstrated using four examples of active pharmaceutical ingredients contaminated with structurally related organic impurities. Application of this workflow allows a targeted problem-solving approach to the management of impurities during industrial crystallization development, while also decreasing resources expended on process development.
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Affiliation(s)
- Stephanie
J. Urwin
- EPSRC
Centre for Innovative Manufacturing in Continuous Manufacturing and
Crystallisation, University of Strathclyde, Glasgow, G1 1RD, U.K.
| | | | - Ivan Marziano
- Pfizer
Worldwide Research and Development, Sandwich, CT13 9NJ, U.K.
| | - Jeremy M. Merritt
- Eli
Lilly and Company, Small Molecule
Design and Development, Lilly Technology Center North, Indianapolis, Indiana 46221, United States
| | - Ian Houson
- EPSRC
Centre for Innovative Manufacturing in Continuous Manufacturing and
Crystallisation, University of Strathclyde, Glasgow, G1 1RD, U.K.
| | - Joop H. Ter Horst
- EPSRC
Centre for Innovative Manufacturing in Continuous Manufacturing and
Crystallisation, University of Strathclyde, Glasgow, G1 1RD, U.K.
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23
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Anju L, Aruldhas D, Joe IH, John NL. Spectroscopic, quantum mechanical and docking studies on organochlorine insecticides by density functional theory. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127904] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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24
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A new 1D coordination polymer of triphenyl lead hydrosulfide: Synthesis and insights into crystal architecture and Hirshfeld surface analyses. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.127801] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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25
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She WJ, Cui YF, Liu C, Wang L. Structurally characterized dinuclear zinc(II) and copper(II) coumarin-based N2O2-donor complexes: syntheses, Hirshfeld analyses and fluorescent properties. TRANSIT METAL CHEM 2020. [DOI: 10.1007/s11243-020-00388-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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26
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Şen N, Nazir H, Atҫeken N, Hope KS, Acar N, Atakol O. Synthesis, characterisation and energetic performance of insensitive energetic salts formed between picric acid and 2,3-diaminotoluene, 2,4-diaminotoluene. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127580] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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27
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Altowyan MS, Ali M, Soliman SM, Al-Majid AM, Islam MS, Yousuf S, Choudhary MI, Ghabbour HA, Barakat A. Synthesis, computational studies and biological activity of oxamohydrazide derivatives bearing isatin and ferrocene scaffolds. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127372] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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28
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Zn(II) complex derived from bidentate Schiff base ligand: Synthesis, characterization, DFT studies and evaluation of anti-inflammatory activity. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.127177] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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29
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Khorloo M, Cheng Y, Zhang H, Chen M, Sung HHY, Williams ID, Lam JWY, Tang BZ. Polymorph selectivity of an AIE luminogen under nano-confinement to visualize polymer microstructures. Chem Sci 2019; 11:997-1005. [PMID: 34084354 PMCID: PMC8146380 DOI: 10.1039/c9sc04239c] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Despite the huge progress of luminescent molecular assemblies over the past decade, it is still challenging to understand their confined behavior in semi-crystalline polymers for constrained space recognition. Here, we report a polymorphic luminogen with aggregation-induced emission (AIE), capable of selective growth in polymer amorphous and crystalline phases with distinct color. The polymorphic behaviors of the AIE luminogen embedded within the polymer network are dependent on the size of nano-confinement: a thermodynamically stable polymorph of the AIE luminogen with green emission is stabilized in the amorphous phase, while a metastable polymorph with yellow emission is confined in the crystalline phase. The information on polymer crystalline and amorphous phases is transformed into distinct fluorescence colors, allowing a single AIE luminogen as a fluorescent marker for visualization of polymer microstructures in terms of amorphous and crystalline phase distribution, quantitative polymer crystallinity measurement, and spatial morphological arrangement. Our findings demonstrate that confinement of the AIE luminogen in the polymer network can achieve free space recognition and also provide a correlation between microscopic morphologies and macroscopic optical signals. We envision that our strategy will inspire the development of other materials with spatial confinement to incorporate AIE luminogens for various applications. A polymorphic AIEgen is capable of selective growth in amorphous and crystalline polymer phases with distinct color for microstructure visualization.![]()
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Affiliation(s)
- Michidmaa Khorloo
- Department of Chemistry, The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study and Development of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
| | - Yanhua Cheng
- Department of Chemistry, The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study and Development of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China .,State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University Shanghai 201620 China
| | - Haoke Zhang
- Department of Chemistry, The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study and Development of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China .,HKUST-Shenzhen Research Institute No. 9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Ming Chen
- Department of Chemistry, The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study and Development of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
| | - Herman H Y Sung
- Department of Chemistry, The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study and Development of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
| | - Ian D Williams
- Department of Chemistry, The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study and Development of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China
| | - Jacky W Y Lam
- Department of Chemistry, The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study and Development of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China .,HKUST-Shenzhen Research Institute No. 9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China
| | - Ben Zhong Tang
- Department of Chemistry, The Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, Institute for Advanced Study and Development of Chemical and Biological Engineering, The Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong China .,HKUST-Shenzhen Research Institute No. 9 Yuexing 1st RD, South Area, Hi-tech Park, Nanshan Shenzhen 518057 China.,Center for Aggregation-Induced Emission, SCUT-HKUST Joint Research Institute, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology Guangzhou China
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30
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Guerra RB, Huamaní LSC, Tenorio JC, Guimarães WM, Bonacin JA, Barboza Formiga AL. Analysis of solvent-accessible voids and proton-coupled electron transfer of 2,6-bis(1H-imidazol-2-yl)pyridine and its hydrochloride. ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2019; 75:1359-1371. [PMID: 31589152 DOI: 10.1107/s2053229619011951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 08/29/2019] [Indexed: 11/11/2022]
Abstract
The crystal structures of the solid form of solvated 2,6-bis(1H-imidazol-2-yl)pyridine (H2dimpy) trihydrate, C11H9N5·3H2O·[+solvent], I, and its hydrate hydrochloride salt 2-[6-(1H-imidazol-2-yl)pyridin-2-yl]-1H-imidazol-3-ium chloride trihydrate, C11H10N5+·Cl-·3H2O, II, are reported and analysed in detail, along with potentiometric and spectrophotometric titrations for evaluation of the acid-base equilibria and proton-coupled electron-transfer reactions. Compound I crystallizes in the high-symmetry trigonal space group P3221 with an atypical formation of solvent-accessible voids, as a consequence of the 32 screw axis in the crystallographic c-axis direction, which are probably occupied by uncharacterized disordered solvent molecules. Additionally, the trihydrated chloride salt crystallizes in the conventional monoclinic space group P21/c without the formation of solvent-accessible voids. The acid-base equilibria of H2dimpy were studied by potentiometric and spectrophotometric titrations, and the results suggest the formation of H3dimpy+ (pKa1 = 5.40) and H4dimpy2+ (pKa2 = 3.98), with the electrochemical behaviour of these species showing two consecutive irreversible proton-coupled electron-transfer reactions. Density functional theory (DFT) calculations corroborate the interpretation of the experimental results and support the assignment of the electrochemical behaviour.
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Affiliation(s)
- Renan B Guerra
- Department of Inorganic Chemistry, University of Campinas - UNICAMP, 6154, Campinas, São Paulo 13083-970, Brazil
| | - Luis S C Huamaní
- Department of Inorganic Chemistry, University of Campinas - UNICAMP, 6154, Campinas, São Paulo 13083-970, Brazil
| | - Juan C Tenorio
- Department of Inorganic Chemistry, University of Campinas - UNICAMP, 6154, Campinas, São Paulo 13083-970, Brazil
| | - Willian M Guimarães
- Department of Inorganic Chemistry, University of Campinas - UNICAMP, 6154, Campinas, São Paulo 13083-970, Brazil
| | - Juliano A Bonacin
- Department of Inorganic Chemistry, University of Campinas - UNICAMP, 6154, Campinas, São Paulo 13083-970, Brazil
| | - André Luiz Barboza Formiga
- Department of Inorganic Chemistry, University of Campinas - UNICAMP, 6154, Campinas, São Paulo 13083-970, Brazil
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31
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Cui Y, Xu Y, Liu X, Li Y, Wang BL, Dong Y, Li W, Lei S. Field-Induced Single-Ion Magnetic Behavior in Two Mononuclear Cobalt(II) Complexes. Chem Asian J 2019; 14:2620-2628. [PMID: 31066179 DOI: 10.1002/asia.201900258] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 04/30/2019] [Indexed: 11/08/2022]
Abstract
The employment of a new rigid N-tridentate ligand, bis(1-chloroimidazo[1,5-a]pyridin-3-yl)pyridine (bcpp), in the construction of cobalt(II) single-ion magnets is reported. Two cobalt(II) complexes, [Co(bcpp)Cl2 ] (1) and [Co(bcpp)Br2 ] (2), have been prepared and characterized. Single-crystal XRD analyses reveal that complexes 1 and 2 are isostructural. They are pentacoordinated mononuclear cobalt(II) compounds with expected trigonal bipyramidal geometry. Both analysis of the magnetic data and ab initio calculations reveal easy-plane magnetic anisotropy (D>0) for 1 and 2. Detailed alternating current magnetic susceptibility measurements reveal the occurrence of slow magnetic relaxation behavior for the cobalt(II) centers of 1 and 2; thus indicating that both complexes are field-induced single-ion magnets.
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Affiliation(s)
- Yanfeng Cui
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China.,Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810008, P.R. China
| | - Yameng Xu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Xin Liu
- Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810008, P.R. China
| | - Yahong Li
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Bao-Lin Wang
- Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing, 210023, P.R. China
| | - Yaping Dong
- Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810008, P.R. China
| | - Wu Li
- Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining, 810008, P.R. China
| | - Shiming Lei
- Department of Chemistry, Princeton University, Princeton, NJ, 08544, USA
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32
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Jellali A, Elleuch S, Hamdi B, Zouari R. Experimental and theoretical investigations of the molecular structure, the spectroscopic properties and TD-DFT analysis of a new semiconductor hybrid based iron(III). JOURNAL OF SAUDI CHEMICAL SOCIETY 2019. [DOI: 10.1016/j.jscs.2018.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Synthesis, X-ray crystal structure, Hirshfeld surface analysis, DFT, MESP and molecular docking studies of 2-(4-bromophenyl)-1-(3-fluoro-4-methylphenyl)-4,5-diphenyl-1H-imidazole. ACTA ACUST UNITED AC 2019. [DOI: 10.1016/j.cdc.2019.100237] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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34
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Şen N. Characterization and properties of a new energetic co-crystal composed of trinitrotoluene and 2,6-diaminotoluene. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.11.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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35
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Lv CP, Feng C, Wang CH. One new manganese polymer with a bidentate pyrazole-based ligand: crystal structure, fluorescence and Hirshfeld surface analysis. INORG NANO-MET CHEM 2019. [DOI: 10.1080/24701556.2019.1569051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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36
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Experimental and theoretical investigations of a proton transfer supramolecular adduct, aminoguanidinium p-nitrophenolate: p-nitrophenol. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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37
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Zhong Z, Yang X, Wang BH, Yao YF, Guo B, Yu L, Huang Y, Xu J. Solvent-polymer guest exchange in a carbamazepine inclusion complex: structure, kinetics and implication for guest selection. CrystEngComm 2019. [DOI: 10.1039/c8ce01766b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solvent–polymer guest exchange in a carbamazepine inclusion complex in a stirred solution was studied and a mechanism was proposed.
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Affiliation(s)
- Zhi Zhong
- Key Laboratory of Advanced Materials (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Xiaotong Yang
- Key Laboratory of Advanced Materials (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Bi-Heng Wang
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance
- School of Physics and Materials Science
- East China Normal University
- Shanghai 200062
- China
| | - Ye-Feng Yao
- Physics Department and Shanghai Key Laboratory of Magnetic Resonance
- School of Physics and Materials Science
- East China Normal University
- Shanghai 200062
- China
| | - Baohua Guo
- Key Laboratory of Advanced Materials (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Lian Yu
- School of Pharmacy and Department of Chemistry
- University of Wisconsin-Madison
- Madison
- USA
| | - Yanbin Huang
- Key Laboratory of Advanced Materials (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Jun Xu
- Key Laboratory of Advanced Materials (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing 100084
- China
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38
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Kamalakaran AS. Molecular Adducts of Isoniazid: Crystal Structure, Electronic Properties, and Hirshfeld Surface Analysis. J STRUCT CHEM+ 2018. [DOI: 10.1134/s002247661807003x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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39
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Darmali C, Mansouri S, Yazdanpanah N, Woo MW. Mechanisms and Control of Impurities in Continuous Crystallization: A Review. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b04560] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christine Darmali
- Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Shahnaz Mansouri
- Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia
| | - Nima Yazdanpanah
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Meng W. Woo
- Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia
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40
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Wang F, Liu LZ, Gao L, Dong WK. Unusual constructions of two Salamo-based copper(II) complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 203:56-64. [PMID: 29860168 DOI: 10.1016/j.saa.2018.05.088] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2017] [Revised: 05/18/2018] [Accepted: 05/27/2018] [Indexed: 06/08/2023]
Abstract
wo unusual Cu(II) complexes [{Cu(L1)}2] (1) and [Cu2(L2)] (2), with an asymmetric salamo-type bisoxime ligand H2L1 were synthesized and characterized by elemental analyses, UV-Vis, fluorescent spectra, Hirshfeld surface analyses and single-crystal X-ray diffraction analyses. For the complex 1, two Cu(II) ions are penta-coordinate by N2O2 donor atoms from the (L1)2- unit and one bridged phenol oxygen atom from another (L1)2- unit. Complex 1 does not have intermolecular hydrogen bonds, formed an isolated zero dimensional structure. Meanwhile, for the complex 2, an unexpected ligand H4L2 was synthesized by aldol condensation reaction of H2L1 and acetone upon coordination, then the new ligand and Cu(II) ions combined, formed a highly symmetrical structure, and two Cu(II) ions of the complex 2 have tetra-coordinate environment. With the help of intermolecular hydrogen bonding CH⋯O interactions, a self-assembled infinite 1D supramolecular structure was formed. Meanwhile, the photophysical spectra and Hirshfeld surface analyses of the complexes 1 and 2 were also measured and discussed.
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Affiliation(s)
- Fei Wang
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China
| | - Ling-Zhi Liu
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China
| | - Lei Gao
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China
| | - Wen-Kui Dong
- School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China.
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41
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Sharninghausen LS, Sinha SB, Shopov DY, Brudvig GW, Crabtree RH. Some crystal growth strategies for diffraction structure studies of iridium complexes. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.05.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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42
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Nie H, Mo H, Byrn SR. Investigating the Physicochemical Stability of Highly Purified Darunavir Ethanolate Extracted from PREZISTA® Tablets. AAPS PharmSciTech 2018; 19:2407-2417. [PMID: 29869313 DOI: 10.1208/s12249-018-1036-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 04/27/2018] [Indexed: 11/30/2022] Open
Abstract
Understanding physicochemical stability of darunavir ethanolate is expected to be of critical importance for the development and manufacturing of high-quality darunavir-related pharmaceutical products. However, there are no enabling monographs for darunavir to illustrate its solid-state chemistry, impurity profile, and assay methods. In addition, the US Pharmacopeia reference standard of darunavir is still not commercially available. It has been also challenging to find reliable vendors to obtain highly purified darunavir ethanolate crystals to conduct the physicochemical stability testing. In the present research, we developed a straightforward and cost-effective approach to extract and purify darunavir ethanolate from PREZISTA® tablets using reverse-engineering and crystallization. Using these highly purified crystals, we thoroughly evaluated the potential risks of degradation and form conversions of darunavir ethanolate at stressed conditions to define the manufacturing and packaging specifications for darunavir-related products. Amorphization was observed under thermal storage caused by desolvation of darunavir ethanolate. The ethanolate-to-hydrate conversion of darunavir was observed at high relative humidity conditions. Moreover, acid/base-induced degradations of darunavir have been investigated herein to determine the possible drug-excipient compatibility issues in formulations. Furthermore, it is of particular interests to allow the production of high-quality darunavir-ritonavir fixed dose combinations for marketing in Africa. Thus, a validated HPLC method was developed according to ICH guideline to simultaneously quantify assays of darunavir and ritonavir in a single injection. In summary, the findings of this study provide important information for pharmaceutical scientists to design and develop reliable formulations and processings for darunavir-related products with improved stability.
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43
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Jellali A, Hamdi B, Salah N, Zouari R. Experimental, Theoretical, Characterization and TD-DFT Analysis of a Complex [Cu(CAP)2Cl2]. J Inorg Organomet Polym Mater 2018. [DOI: 10.1007/s10904-018-0822-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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44
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New hybrid of the barbituric acid motif: synthesis, X-ray single crystal, DFT, and Hirshfeld surface analyses. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3364-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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45
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New spiro-oxindole constructed with pyrrolidine/thioxothiazolidin-4-one derivatives: Regioselective synthesis, X-ray crystal structures, Hirshfeld surface analysis, DFT, docking and antimicrobial studies. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.09.086] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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46
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Quiñones R, Iuliucci RJ, Behnke G, Brown R, Shoup D, Riedel TM, Plavchak C, Lininger BE, Spehar JM. Moving towards fast characterization of polymorphic drugs by solid-state NMR spectroscopy. J Pharm Biomed Anal 2018; 148:163-169. [DOI: 10.1016/j.jpba.2017.09.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Revised: 09/21/2017] [Accepted: 09/22/2017] [Indexed: 11/16/2022]
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47
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Romani LFA, Yoshida MI, Gomes ECL, Machado RR, Rodrigues FF, Coelho MM, Oliveira MA, Freitas-Marques MB, San Gil RAS, Mussel WN. Physicochemical characterization, the Hirshfeld surface, and biological evaluation of two meloxicam compounding pharmacy samples. J Pharm Anal 2017; 8:103-108. [PMID: 29736296 PMCID: PMC5934743 DOI: 10.1016/j.jpha.2017.12.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2017] [Revised: 12/15/2017] [Accepted: 12/18/2017] [Indexed: 01/27/2023] Open
Abstract
Meloxicam (MLX) is an anti-inflammatory drug susceptible to variations and crystalline transitions. In compounding pharmacies, the complete crystallographic evaluation of the raw material is not a routine procedure. We performed a complete crystallographic characterization of aleatory raw MLX samples from compounding pharmacies. X-ray diffraction indicated the presence of two crystalline forms in one sample. DSC experiments suggested that crystallization, or a crystal transition, occurred differently between samples. The FTIR and 1H NMR spectra showed characteristic assignments. 13C solid-state NMR spectroscopy indicated the presence of more than one phase in a sample from pharmacy B. The Hirshfeld surface analysis, with electrostatic potential projection, allowed complete assignment of the UV spectra in ethanol solution. The polymorph I of meloxicam was more active than polymorph III in an experimental model of acute inflammation in mice. Our results highlighted the need for complete crystallographic characterization and the separation of freely used raw materials in compounding pharmacies, as a routine procedure, to ensure the desired dose/effect. Characterization of meloxicam polymorphs I and III. Biological activity evaluation. Hirshfeld surface analysis explains experimentally observed solubility differences. Meloxicam form I was more effective than form III. Adequate quality control based on crystallographic characterization required for raw materials.
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Affiliation(s)
- Luciana F A Romani
- Department of Chemistry, Institute of Exact Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, Brazil
| | - Maria I Yoshida
- Department of Chemistry, Institute of Exact Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, Brazil
| | - Elionai C L Gomes
- Department of Chemistry, Institute of Exact Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, Brazil
| | - Renes R Machado
- Department of Pharmaceutical Products, Faculty of Pharmacy, Federal University of Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, Brazil
| | - Felipe F Rodrigues
- Department of Pharmaceutical Products, Faculty of Pharmacy, Federal University of Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, Brazil
| | - Márcio M Coelho
- Department of Pharmaceutical Products, Faculty of Pharmacy, Federal University of Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, Brazil
| | - Marcelo A Oliveira
- Health Science Department, Federal University of Espírito Santo, Campus São Mateus, ES, Brazil
| | - Maria B Freitas-Marques
- Department of Chemistry, Institute of Exact Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, Brazil
| | - Rosane A S San Gil
- Institute of Chemistry, Federal University of Rio de Janeiro, Campus Fundão, RJ, Brazil
| | - Wagner N Mussel
- Department of Chemistry, Institute of Exact Sciences, Federal University of Minas Gerais, Av. Antônio Carlos 6627, Belo Horizonte, MG, Brazil
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48
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Schrode B, Bodak B, Riegler H, Zimmer A, Christian P, Werzer O. Solvent Vapor Annealing of Amorphous Carbamazepine Films for Fast Polymorph Screening and Dissolution Alteration. ACS OMEGA 2017; 2:5582-5590. [PMID: 28983522 PMCID: PMC5623942 DOI: 10.1021/acsomega.7b00783] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 08/24/2017] [Indexed: 06/07/2023]
Abstract
Solubility enhancement and thus higher bioavailability are of great importance and a constant challenge in pharmaceutical research whereby polymorph screening and selection is one of the most important tasks. A very promising approach for polymorph screening is solvent vapor annealing where a sample is exposed to an atmosphere saturated with molecules of a specific chemical/solvent. In this work, amorphous carbamazepine thin films were prepared by spin coating, and the transformation into crystalline forms under exposure to solvent vapors was investigated. Employing grazing incidence X-ray diffraction, four distinct carbamazepine polymorphs, a solvate, and hydrates could be identified, while optical microscopy showed mainly spherulitic morphologies. In vitro dissolution experiments revealed different carbamazepine release from the various thin-film samples containing distinct polymorphic compositions: heat treatment of amorphous samples at 80 °C results in an immediate release; samples exposed to EtOH vapors show a drug release about 5 times slower than this immediate one; and all the others had intermediate release profiles. Noteworthy, even the sample of slowest release has a manifold faster release compared to a standard powder sample demonstrating the capabilities of thin-film preparation for faster drug release in general. Despite the small number of samples in this screening experiment, the results clearly show how solvent vapor annealing can assist in identifying potential polymorphs and allows for estimating their impact on properties like bioavailability.
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Affiliation(s)
- Benedikt Schrode
- Institute
of Pharmaceutical Sciences, NAWI Graz, Department of Pharmaceutical
Technology, University Graz, Universtitätsplatz 1, 8010 Graz, Austria
- Institute
for Solid State Physics, NAWI Graz, Graz
University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Brigitta Bodak
- Institute
of Pharmaceutical Sciences, NAWI Graz, Department of Pharmaceutical
Technology, University Graz, Universtitätsplatz 1, 8010 Graz, Austria
| | - Hans Riegler
- Institute
of Pharmaceutical Sciences, NAWI Graz, Department of Pharmaceutical
Technology, University Graz, Universtitätsplatz 1, 8010 Graz, Austria
| | - Andreas Zimmer
- Institute
of Pharmaceutical Sciences, NAWI Graz, Department of Pharmaceutical
Technology, University Graz, Universtitätsplatz 1, 8010 Graz, Austria
| | - Paul Christian
- Institute
for Solid State Physics, NAWI Graz, Graz
University of Technology, Petersgasse 16, 8010 Graz, Austria
| | - Oliver Werzer
- Institute
of Pharmaceutical Sciences, NAWI Graz, Department of Pharmaceutical
Technology, University Graz, Universtitätsplatz 1, 8010 Graz, Austria
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49
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Zhang YW, Wang JW, Wu HS, Wang MX, Luo YH, Sun BW. Re-arrangements of 4-[(4H-1,2,4-triazol-4-ylimino)methyl]phenol with different inorganic anions: Crystal structure and fluorescence properties. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.05.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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50
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Synthesis, structural and biological studies of two new Co(III) complexes with tridentate hydrazone ligand derived from the antihypertensive drug hydralazine. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.05.045] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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