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Rajendran HK, Deen MA, Ray JP, Singh A, Narayanasamy S. Harnessing the Chemical Functionality of Metal-Organic Frameworks Toward Removal of Aqueous Pollutants. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:3963-3983. [PMID: 38319923 DOI: 10.1021/acs.langmuir.3c02668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Wastewater treatment has been bestowed with a plethora of materials; among them, metal-organic frameworks (MOFs) are one such kind with exceptional properties. Besides their application in gas adsorption and storage, they are applied in many fields. In orientation toward wastewater treatment, MOFs have been and are being successfully employed to capture a variety of aqueous pollutants, including both organic and inorganic ones. This review sheds light on the postsynthetic modifications (PSMs) performed over MOFs to adsorb and degrade recalcitrant. Modifications performed on the metal nodes and the linkers have been explained with reference to some widely used chemical modifications like alkylation, amination, thiol addition, tandem modifications, and coordinate modifications. The boost in pollutant removal efficacy, reaction rate, adsorption capacity, and selectivity for the modified MOFs is highlighted. The rationale and the robustness of micromotor MOFs, i.e., MOFs with motor activity, and their potential application in the capture of toxic pollutants are also presented for readers. This review also discusses the challenges and future recommendations to be considered in performing PSM over a MOF concerning wastewater treatment.
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Affiliation(s)
- Harish Kumar Rajendran
- Biochemical and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Mohammed Askkar Deen
- Biochemical and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Jyoti Prakash Ray
- Biochemical and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Anushka Singh
- Biochemical and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
| | - Selvaraju Narayanasamy
- Biochemical and Environmental Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Guwahati, Assam 781039, India
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2
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Di W, Xue K, Cai J, Zhu Z, Li Z, Fu H, Lei H, Hu W, Tang C, Wang W, Cao Y. Single-Molecule Force Spectroscopy Reveals Cation-π Interactions in Aqueous Media Are Highly Affected by Cation Dehydration. PHYSICAL REVIEW LETTERS 2023; 130:118101. [PMID: 37001074 DOI: 10.1103/physrevlett.130.118101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Accepted: 01/24/2023] [Indexed: 06/19/2023]
Abstract
Cation-π interactions underlie many important processes in biology and materials science. However, experimental investigations of cation-π interactions in aqueous media remain challenging. Here, we studied the cation-π binding strength and mechanism by pulling two hydrophobic polymers with distinct cation binding properties, i.e., poly-pentafluorostyrene and polystyrene, in aqueous media using single-molecule force spectroscopy and nuclear magnetic resonance measurement. We found that the interaction strengths linearly depend on the cation concentrations, following the order of Li^{+}<NH_{4}^{+}<Na^{+}<K^{+}. The binding energies are 0.03-0.23 kJ mol^{-1} M^{-1}. This order is distinct from the strength of cation-π interactions in gas phase and may be caused by the different dehydration ability of the cations. Taken together, our method provides a unique perspective to investigate cation-π interactions under physiologically relevant conditions.
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Affiliation(s)
- Weishuai Di
- Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, China
| | - Kai Xue
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
- School of Physical and Mathematical Science Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Jun Cai
- Department of Polymer Science and Engineering, State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, 210023 Nanjing, China
| | - Zhenshu Zhu
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing 210093, China
| | - Zihan Li
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Hui Fu
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Hai Lei
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing 210093, China
| | - Wenbing Hu
- Department of Polymer Science and Engineering, State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Chemistry for Life Sciences, School of Chemistry and Chemical Engineering, Nanjing University, 210023 Nanjing, China
| | - Chun Tang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, and Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China
| | - Wei Wang
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing 210093, China
- Institute for Brain Sciences, Nanjing University, Nanjing 210093, China
- Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210093, China
| | - Yi Cao
- Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, China
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, Department of Physics, Nanjing University, Nanjing 210093, China
- Institute for Brain Sciences, Nanjing University, Nanjing 210093, China
- Chemistry and Biomedicine Innovation Center, Nanjing University, Nanjing 210093, China
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3
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Alirezapour F, Keshavarz Y, Minaeifar AA, Khanmohammadi A. Structural analysis and electronic properties of transition metal ions (Ni2+, Fe2+, Mn+ and Co+) with psoralen biomolecule as an anticancer drug. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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4
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A DFT theoretical investigation on the interplay effects between cation-π and intramolecular hydrogen bond interactions in the mesalazine⋯Fe2+ binary complex. Theor Chem Acc 2022. [DOI: 10.1007/s00214-022-02896-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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5
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Vaňura P, Sýkora D, Böhm S, Uhlíková T. Cation–π interaction of thallium (I) with [7]helicene: an experimental and theoretical study. Mol Phys 2022. [DOI: 10.1080/00268976.2022.2072784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Petr Vaňura
- University of Chemistry and Technology, Prague, Czech Republic
| | - David Sýkora
- University of Chemistry and Technology, Prague, Czech Republic
| | - Stanislav Böhm
- University of Chemistry and Technology, Prague, Czech Republic
| | - Tereza Uhlíková
- University of Chemistry and Technology, Prague, Czech Republic
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6
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Akine S, Miyashita M, Nabeshima T. Enhancement of Alkali Metal Ion Recognition by Metalation of a Tris(saloph) Cryptand Having Benzene Rings at the Bridgeheads. Inorg Chem 2021; 60:12961-12971. [PMID: 34310880 DOI: 10.1021/acs.inorgchem.1c01376] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A cryptand derivative, H6L, which has three H2saloph arms connected by two benzene ring bridgeheads, was synthesized and converted into the trinuclear metallocryptand, LNi3. The nonmetalated host, H6L, was found to bind to alkali metal ions (Na+, K+, Rb+, Cs+; logKa = 3.37-6.67) in its well-defined cavity in DMSO/chloroform (1:9). The binding affinity was enhanced by 1-2 orders of magnitude upon the conversion into the metallocryptand, LNi3, which can be explained by the more polarized phenoxo groups in the [Ni(saloph)] arms. The guest binding affinity of Na+ < K+ < Rb+ ≈ Cs+ was clearly demonstrated by the 1H NMR competition experiments. The DFT calculations suggested that the Rb+ ion most suitably fit into the benzene-benzene spacing with a cation-π interaction and that only the largest Cs+ ion can almost equally interact with all six phenoxo oxygen donor atoms. The metallocryptand, LNi3, also showed a strong binding affinity to Ag+ by taking advantage of cation-π interactions, which was confirmed by spectroscopic titrations and crystallographic analysis as well as DFT calculations. Thus, the well-defined three-dimensional cavity of LNi3 was found to be suitable for strong binding with alkali metal ions as well as Ag+.
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Affiliation(s)
- Shigehisa Akine
- Graduate School of Natural Science and Technology/Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Masato Miyashita
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
| | - Tatsuya Nabeshima
- Faculty of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571, Japan
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7
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Al Mughram MH, Catalano C, Bowry JP, Safo MK, Scarsdale JN, Kellogg GE. 3D Interaction Homology: Hydropathic Analyses of the "π-Cation" and "π-π" Interaction Motifs in Phenylalanine, Tyrosine, and Tryptophan Residues. J Chem Inf Model 2021; 61:2937-2956. [PMID: 34101460 DOI: 10.1021/acs.jcim.1c00235] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Three-dimensional (3D) maps of the hydropathic environments of protein amino acid residues are information-rich descriptors of preferred conformations, interaction types and energetics, and solvent accessibility. The interactions made by each residue are the primary factor for rotamer selection and the secondary, tertiary, and even quaternary protein structure. Our evolving basis set of environmental data for each residue type can be used to understand the protein structure. This work focuses on the aromatic residues phenylalanine, tyrosine, and tryptophan and their structural roles. We calculated and analyzed side chain-to-environment 3D maps for over 70,000 residues of these three types that reveal, with respect to hydrophobic and polar interactions, the environment around each. After binning with backbone ϕ/ψ and side chain χ1, we clustered each bin by 3D similarities between map-map pairs. For each of the three residue types, four bins were examined in detail: one in the β-pleat, two in the right-hand α-helix, and one in the left-hand α-helix regions of the Ramachandran plot. For high degrees of side chain burial, encapsulation of the side chain by hydrophobic interactions is ubiquitous. The more solvent-exposed side chains are more likely to be involved in polar interactions with their environments. Evidence for π-π interactions was observed in about half of the residues surveyed [phenylalanine (PHE): 53.3%, tyrosine (TYR): 34.1%, and tryptophan (TRP): 55.7%], but on an energy basis, this contributed to only ∼4% of the total. Evidence for π-cation interactions was observed in 14.1% of PHE, 8.3% of TYR, and 26.8% of TRP residues, but on an energy basis, this contributed to only ∼1%. This recognition of even these subtle interactions in the 3D hydropathic environment maps is key support for our interaction homology paradigm of protein structure elucidation and possibly prediction.
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Affiliation(s)
- Mohammed H Al Mughram
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, Virginia 23298-0540, United States
| | - Claudio Catalano
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, Virginia 23298-0540, United States
| | - John P Bowry
- Center for the Study of Biological Complexity, Virginia Commonwealth University, Richmond, Virginia 23284-2030, United States
| | - Martin K Safo
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, Virginia 23298-0540, United States.,Institute of Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia 23298-0133, United States
| | - J Neel Scarsdale
- Center for the Study of Biological Complexity, Virginia Commonwealth University, Richmond, Virginia 23284-2030, United States.,Institute of Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia 23298-0133, United States
| | - Glen E Kellogg
- Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, Virginia 23298-0540, United States.,Center for the Study of Biological Complexity, Virginia Commonwealth University, Richmond, Virginia 23284-2030, United States.,Institute of Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, Virginia 23298-0133, United States
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8
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Tiekink ERT. Supramolecular architectures sustained by delocalised C–I⋯π(arene) interactions in molecular crystals and the propensity of their formation. CrystEngComm 2021. [DOI: 10.1039/d0ce01677b] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A survey of delocalised C–I⋯π(chelate ring) interactions is presented.
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Affiliation(s)
- Edward R. T. Tiekink
- Research Centre for Crystalline Materials
- School of Science and Technology
- Sunway University
- Bandar Sunway
- Malaysia
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9
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Chen Y, Zhang X, Liu F, He G, Zhang J, Houk K, Smith AB, Liang Y. The role of CuI in the siloxane-mediated Pd-catalyzed cross-coupling reactions of aryl iodides with aryl lithium reagents. CHINESE CHEM LETT 2021; 32:441-444. [PMID: 33994753 PMCID: PMC8115222 DOI: 10.1016/j.cclet.2020.05.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Experiments indicate that a catalytic amount of CuI plays an important role in the siloxane-mediated Pd-catalyzed cross-coupling reactions with the direct use of organolithium reagents. Addition of organolithium to the siloxane transfer agent generates an organosilicon intermediate. DFT calculations indicate that CuI initially accelerates the Si-Pd(II) transmetalation of the organosilicon intermediate by the formation of CuI2 -. Subsequently, CuI2 - works as a shuttle between the Si-Cu(I) and Cu(I)-Pd(II) transmetalation processes.
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Affiliation(s)
- Yu Chen
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Xiao Zhang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Fang Liu
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Gucheng He
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Ju Zhang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - K.N. Houk
- Department of Chemistry and Biochemistry, University of California, CA 90095, United States
| | - Amos B. Smith
- Department of Chemistry, University of Pennsylvania, PA 19104, United States
| | - Yong Liang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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10
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Alirezapour F, Khanmohammadi A. The effect of cation-π interactions on the stability and electronic properties of anticancer drug Altretamine: a theoretical study. Acta Crystallogr C Struct Chem 2020; 76:982-991. [PMID: 33016269 DOI: 10.1107/s2053229620012589] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Accepted: 09/15/2020] [Indexed: 11/10/2022] Open
Abstract
The present work utilizes density functional theory (DFT) calculations to study the influence of cation-π interactions on the electronic properties of the complexes formed by Altretamine [2,4,6-tris(dimethylamino)-1,3,5-triazine], an anticancer drug, with mono- and divalent (Li+, Na+, K+, Be2+, Mg2+ and Ca2+) metal cations. The structures were optimized with the M06-2X method and the 6-311++G(d,p) basis set in the gas phase and in solution. The theory of `Atoms in Molecules' (AIM) was applied to study the nature of the interactions by calculating the electron density ρ(r) and its Laplacian at the bond critical points. The charge-transfer process during complexation was evaluated using natural bond orbital (NBO) analysis. The results of DFT calculations demonstrate that the strongest/weakest interactions belong to Be2+/K+ complexes. There are good correlations between the achieved densities and the amounts of charge transfer with the interaction energies. Finally, the stability and reactivity of the cation-π interactions can be determined by quantum chemical computation based on the molecular orbital (MO) theory.
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Affiliation(s)
- Fahimeh Alirezapour
- Department of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, Iran
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11
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Petrushenko I, Shipitsin N, Petrushenko K. Cation-π interactions of inorganic benzenes with Li, Na, and Mg cations: Theoretical insights. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2020.108043] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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13
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Zhao G, Zhu H. Cation-π Interactions in Graphene-Containing Systems for Water Treatment and Beyond. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905756. [PMID: 32253804 DOI: 10.1002/adma.201905756] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 01/30/2020] [Indexed: 06/11/2023]
Abstract
Cation-π interactions are common in nature, especially in organisms. Their profound influences in chemistry, physics, and biology have been continuously investigated since they were discovered in 1981. However, the importance of cation-π interactions in materials science, regarding carbonaceous nanomaterials, has just been realized. The interplay between cations and delocalized polarizable π electrons of graphene would bring about significant changes to the intrinsic characteristics of graphene and greatly affect the device performance based on graphene and its derivatives. Here, the cation-π interactions in graphene containing systems for water treatment applications (e.g., separation membranes, adsorbents) are highlighted. The cross-linking effects caused by cation-π interactions contribute to membrane stability and selectivity and enhanced adsorption. Their roles in dominating the performance of graphene-based structures for other specific applications are also discussed. Relevant theoretical modeling and calculations are summarized to offer an in-depth understanding of the underlying mechanisms which can help in designing more functional materials and structures. Perspectives on the potential directions that deserve effort are also presented.
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Affiliation(s)
- Guoke Zhao
- State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
| | - Hongwei Zhu
- State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China
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14
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Mikhailov GP. Modeling of the Interaction of Cations of Alkali Metals with a Fragment of Graphene in the Environment of Benzene. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY B 2020. [DOI: 10.1134/s1990793120010108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Aqua mediated multicomponent reaction under phase transfer catalysis: A novel and green approach to access fused pyrazoles. ARAB J CHEM 2019. [DOI: 10.1016/j.arabjc.2015.08.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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16
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Orabi EA, Davis RL, Lamoureux G. Drude polarizable force field for cation–π interactions of alkali and quaternary ammonium ions with aromatic amino acid side chains. J Comput Chem 2019; 41:472-481. [DOI: 10.1002/jcc.26084] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 08/14/2019] [Accepted: 09/16/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Esam A. Orabi
- Department of ChemistryFaculty of Science, Assiut University Assiut 71516 Egypt
- Department of ChemistryUniversity of Manitoba Winnipeg Manitoba R3T 2N2 Canada
| | - Rebecca L. Davis
- Department of ChemistryUniversity of Manitoba Winnipeg Manitoba R3T 2N2 Canada
| | - Guillaume Lamoureux
- Department of Chemistry and Center for Computational and Integrative Biology (CCIB)Rutgers University Camden New Jersey 08102
- Centre for Research in Molecular Modeling (CERMM), Concordia University Montréal Québec H4B 1R6 Canada
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17
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Majumdar D, Dey S, Das D, Singh DK, Das S, Bankura K, Mishra D. Heterometallic Zn(II)-K(I) complex with salen-type Schiff-base ligand: Synthesis, crystal structure, solid-state photoluminescent property and theoretical study. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.092] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Su H, Wang H, Wang H, Lu Y, Zhu Z. Description of noncovalent interactions involving π‐system with high precision: An assessment of RPA, MP2, and DFT‐D methods. J Comput Chem 2019; 40:1643-1651. [DOI: 10.1002/jcc.25817] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 02/20/2019] [Accepted: 02/21/2019] [Indexed: 01/15/2023]
Affiliation(s)
- He Su
- School of Physical Science and Technology, Key Laboratory of Advanced Technologies of Materials, Ministry of Education of ChinaSouthwest Jiaotong University Chengdu 611756 People's Republic of China
| | - Hui Wang
- School of Physical Science and Technology, Key Laboratory of Advanced Technologies of Materials, Ministry of Education of ChinaSouthwest Jiaotong University Chengdu 611756 People's Republic of China
| | - Hongyan Wang
- School of Physical Science and Technology, Key Laboratory of Advanced Technologies of Materials, Ministry of Education of ChinaSouthwest Jiaotong University Chengdu 611756 People's Republic of China
| | - Yunxiang Lu
- Key Laboratory for Advanced Materials and School of Chemistry & Molecular Engineering, Department of ChemistryEast China University of Science and Technology Shanghai 200237 People's Republic of China
| | - Zhengdan Zhu
- CAS Key Laboratory of Receptor Research, Drug Discovery and Design Center, Shanghai Institute of Materia Medica, Chinese Academy of SciencesUniversity of Chinese Academy of Sciences Shanghai 201203 People's Republic of China
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19
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Affiliation(s)
- Shinji Yamada
- Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo 112-8610, Japan
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20
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Cation–π Interaction of the Univalent Silver Cation with [2.2.2]Paracyclophane in the Gas Phase and in the Solid State: Experimental and Theoretical Study. J CLUST SCI 2018. [DOI: 10.1007/s10876-018-1461-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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21
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Bhunia S, Kumar A, Singh A, Ojha AK. Binding patterns of metal cations (Na+, K+, Cu2+, and Zn2+) with Trp-Trp di-peptide investigated by DFT, NBO, and MD simulation. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2018.08.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Mary A, Gupta R. Effect of counterion on the reactivity, stability, aromaticity and charge distribution in mono- and polyphosphacyclopentadienide ions – A theoretical investigation. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2018.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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23
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Esrafili MD, Mousavian P, Mohammadian-Sabet F. Tuning of pnicogen and chalcogen bonds by an aerogen-bonding interaction: a comparative ab initio study. Mol Phys 2018. [DOI: 10.1080/00268976.2018.1492746] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mehdi D. Esrafili
- Laboratory of Theoretical Chemistry, Department of Chemistry, University of Maragheh, Maragheh, Iran
| | - Parisasadat Mousavian
- Laboratory of Theoretical Chemistry, Department of Chemistry, University of Maragheh, Maragheh, Iran
| | - Fariba Mohammadian-Sabet
- Laboratory of Theoretical Chemistry, Department of Chemistry, University of Maragheh, Maragheh, Iran
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24
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Lewis acidity of benzene in half-sandwich ruthenium arene complex. A computational study. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2018.05.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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25
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Makrlík E, Sýkora D, Böhm S, Kvíčalová M, Vaňura P. Fascinating interaction of the ammonium cation with [2.2.2]paracyclophane: experimental and theoretical study. Mol Phys 2018. [DOI: 10.1080/00268976.2017.1418031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Emanuel Makrlík
- Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Czech Republic
| | - David Sýkora
- University of Chemistry and Technology, Prague, Czech Republic
| | - Stanislav Böhm
- University of Chemistry and Technology, Prague, Czech Republic
| | - Magdalena Kvíčalová
- Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Czech Republic
| | - Petr Vaňura
- University of Chemistry and Technology, Prague, Czech Republic
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Klepetářová B, Kvíčalová M, Sýkora D, Makrlík E, Vaňura P. Experimental and theoretical study on cation-π interaction of the univalent silver cation with pyrene in the gas phase and in the solid state. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.03.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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27
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Makrlík E, Sýkora D, Böhm S, Vaňura P. Cation-π interaction of the univalent sodium cation with [2.2.2]paracyclophane: Experimental and theoretical study. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.10.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Kumar K, Woo SM, Siu T, Cortopassi WA, Duarte F, Paton RS. Cation-π interactions in protein-ligand binding: theory and data-mining reveal different roles for lysine and arginine. Chem Sci 2018; 9:2655-2665. [PMID: 29719674 PMCID: PMC5903419 DOI: 10.1039/c7sc04905f] [Citation(s) in RCA: 152] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 01/20/2018] [Indexed: 12/22/2022] Open
Abstract
The interactions of neutral aromatic ligands with cationic arginine, histidine and lysine amino acid residues have been studied with ab initio calculations, symmetry adapted perturbation theory (SAPT), and a systematic meta-analysis of X-ray structures.
We have studied the cation–π interactions of neutral aromatic ligands with the cationic amino acid residues arginine, histidine and lysine using ab initio calculations, symmetry adapted perturbation theory (SAPT), and a systematic meta-analysis of all available Protein Data Bank (PDB) X-ray structures. Quantum chemical potential energy surfaces (PES) for these interactions were obtained at the DLPNO-CCSD(T) level of theory and compared against the empirical distribution of 2012 unique protein–ligand cation–π interactions found in X-ray crystal structures. We created a workflow to extract these structures from the PDB, filtering by interaction type and residue pKa. The gas phase cation–π interaction of lysine is the strongest by more than 10 kcal mol–1, but the empirical distribution of 582 X-ray structures lies away from the minimum on the interaction PES. In contrast, 1381 structures involving arginine match the underlying calculated PES with good agreement. SAPT analysis revealed that underlying differences in the balance of electrostatic and dispersion contributions are responsible for this behavior in the context of the protein environment. The lysine–arene interaction, dominated by electrostatics, is greatly weakened by a surrounding dielectric medium and causes it to become essentially negligible in strength and without a well-defined equilibrium separation. The arginine–arene interaction involves a near equal mix of dispersion and electrostatic attraction, which is weakened to a much smaller degree by the surrounding medium. Our results account for the paucity of cation–π interactions involving lysine, even though this is a more common residue than arginine. Aromatic ligands are most likely to interact with cationic arginine residues as this interaction is stronger than for lysine in higher polarity surroundings.
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Affiliation(s)
- Kiran Kumar
- Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , UK .
| | - Shin M Woo
- Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , UK .
| | - Thomas Siu
- Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , UK .
| | - Wilian A Cortopassi
- Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , UK .
| | - Fernanda Duarte
- EaStCHEM School of Chemistry , University of Edinburgh , Joseph Black Building, David Brewster Road , Edinburgh EH9 3FJ , UK .
| | - Robert S Paton
- Chemistry Research Laboratory , University of Oxford , 12 Mansfield Road , Oxford OX1 3TA , UK .
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Anichini C, Czepa W, Pakulski D, Aliprandi A, Ciesielski A, Samorì P. Chemical sensing with 2D materials. Chem Soc Rev 2018; 47:4860-4908. [DOI: 10.1039/c8cs00417j] [Citation(s) in RCA: 342] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
During the last decade, two-dimensional materials (2DMs) have attracted great attention due to their unique chemical and physical properties, which make them appealing platforms for diverse applications in sensing of gas, metal ions as well as relevant chemical entities.
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Affiliation(s)
| | - Włodzimierz Czepa
- Faculty of Chemistry
- Adam Mickiewicz University
- 61614 Poznań
- Poland
- Centre for Advanced Technologies
| | | | | | | | - Paolo Samorì
- Université de Strasbourg
- CNRS
- ISIS
- 67000 Strasbourg
- France
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30
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Makrlík E, Sýkora D, Böhm S, Vaňura P. Experimental and Theoretical Study on Cation–π Interaction of the Potassium Cation with [2.2.2]Paracyclophane. J CLUST SCI 2017. [DOI: 10.1007/s10876-017-1314-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Makrlík E, Sýkora D, Böhm S, Vaňura P. [2.2.2]Paracyclophane as a receptor for the cesium cation in the gas phase. Mol Phys 2017. [DOI: 10.1080/00268976.2017.1334971] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Emanuel Makrlík
- Faculty of Environmental Sciences, Czech University of Life Sciences, Prague, Czech Republic
| | - David Sýkora
- University of Chemistry and Technology, Prague, Czech Republic
| | - Stanislav Böhm
- University of Chemistry and Technology, Prague, Czech Republic
| | - Petr Vaňura
- University of Chemistry and Technology, Prague, Czech Republic
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32
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Demircan ÇA, Bozkaya U. Transition Metal Cation−π Interactions: Complexes Formed by Fe2+, Co2+, Ni2+, Cu2+, and Zn2+ Binding with Benzene Molecules. J Phys Chem A 2017; 121:6500-6509. [DOI: 10.1021/acs.jpca.7b05759] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Uğur Bozkaya
- Department of Chemistry, Hacettepe University, Ankara, 06800, Turkey
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33
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Insight into the Electrical Double Layer of an Ionic Liquid on Graphene. Sci Rep 2017; 7:4225. [PMID: 28652593 PMCID: PMC5484676 DOI: 10.1038/s41598-017-04576-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 05/24/2017] [Indexed: 11/14/2022] Open
Abstract
Graphene is a promising next-generation conducting material with the potential to replace traditional electrode materials in supercapacitors. Since energy storage in supercapacitors relies on the electrolyte-electrode interface, here we elucidate the interfacial subnanometer structure of a single component liquid composed solely of cations and anions – an ionic liquid- on electrified graphene. We study the effect of applied potential on the interaction between graphene and a silicon tip in an ionic liquid and describe it within the framework of the Derjaguin-Landau-Verwey-Overbeck (DLVO) theory. The energy is stored in an electrical double layer composed of an extended Stern layer, which consists of multiple ion layers over ~2 nanometers, beyond which a diffuse layer forms to compensate the applied potential on graphene. The electrical double layer significantly responds to the applied potential, and it shows the transition from overscreening to crowding of counterions at the interface at the highest applied potentials. It is proposed that surface charging occurs through the adsorption of the imidazolium cation to unbiased graphene (likely due to π-π interactions) and that the surface potential is better compensated when counterion crowding happens. This study scrutinizes the electrified graphene-ionic liquid interface, with implications not only in the field of energy storage, but also in lubrication.
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34
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Esrafili MD, Kiani H. Cooperativity between the hydrogen bonding and σ-hole interaction in linear NCX···(NCH)n=2–5 and O3Z···(NCH)n=2–5 complexes (X = Cl, Br; Z = Ar, Kr): a comparative study. CAN J CHEM 2017. [DOI: 10.1139/cjc-2016-0640] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Quantum chemical calculations are performed to investigate the cooperativity of hydrogen bonding with halogen or aerogen bonding interactions in linear NCX···(NCH)n=2–5 and O3Z···(NCH)n=2–5 clusters, where X = Cl, Br and Z = Ar, Kr. To understand the cooperativity mechanism in these systems, the corresponding binary NCX···NCH and O3Z···NCH complexes are also considered. The binding distances, interaction energies, and bonding properties of the NCX···(NCH)n=2–5 and O3Z···(NCH)n=2–5 clusters are analyzed in detail. It is found that the cooperative effects in the hydrogen bonding tend to strengthen X···N and Z···N interactions. For both NCX···(NCH)n and O3Z···(NCH)n clusters, a small bond shrinkage is observed from n = 4 to n = 5, which suggests that the cooperativity effects are almost saturated in the larger clusters (n > 5). As the size of the X or Z atom is increased, the magnitude of the cooperative energy in these systems is also increased, which is mainly ascribed to changes in electrostatic potentials and orbital interactions. Our results indicate that the cooperative effects lead to a substantial change in the 14N nuclear quadrupole coupling constants of the NCH molecule.
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Affiliation(s)
- Mehdi D. Esrafili
- Laboratory of Theoretical Chemistry, Department of Chemistry, University of Maragheh, Maragheh, Iran
- Laboratory of Theoretical Chemistry, Department of Chemistry, University of Maragheh, Maragheh, Iran
| | - Hossein Kiani
- Laboratory of Theoretical Chemistry, Department of Chemistry, University of Maragheh, Maragheh, Iran
- Laboratory of Theoretical Chemistry, Department of Chemistry, University of Maragheh, Maragheh, Iran
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35
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Bhunia S, Singh A, Ojha AK. Investigation of the encapsulation of metal cations (Cu2+, Zn2+, Ca2+ and Ba2+) by the dipeptide Phe–Phe using natural bond orbital theory and molecular dynamics simulation. J Mol Model 2017; 23:88. [DOI: 10.1007/s00894-017-3248-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 01/23/2017] [Indexed: 11/24/2022]
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36
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37
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Carrazana-García JA, Cabaleiro-Lago EM, Rodríguez-Otero J. A theoretical study of complexes formed between cations and curved aromatic systems: electrostatics does not always control cation–π interaction. Phys Chem Chem Phys 2017; 19:10543-10553. [DOI: 10.1039/c7cp01491k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cation–π interactions in curved aromatic systems are not controlled by electrostatics; induction and dispersion dominate in most cases studied.
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Affiliation(s)
- Jorge A. Carrazana-García
- Departamento de Química Física
- Facultade de Ciencias
- Universidade de Santiago de Compostela
- Campus de Lugo
- Avenida Alfonso X El Sabio s/n
| | - Enrique M. Cabaleiro-Lago
- Departamento de Química Física
- Facultade de Ciencias
- Universidade de Santiago de Compostela
- Campus de Lugo
- Avenida Alfonso X El Sabio s/n
| | - Jesús Rodríguez-Otero
- Centro de investigación en Química Biolóxica e Materiais Moleculares
- CIQUS
- Universidade de Santiago de Compostela
- Rúa Jenaro de la Fuente s/n
- Santiago de Compostela
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38
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Ben Yahia M, Tounsi M, Aouaini F, Knani S, Ben Yahia M, Ben Lamine A. A statistical physics study of the interaction of [7]-helicene with alkali cations (K+ and Cs+): new insights on microscopic adsorption behavior. RSC Adv 2017. [DOI: 10.1039/c7ra08387d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The adsorption of a metal ion to a polycyclic aromatic molecule such as helicene is the object of our study.
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Affiliation(s)
- Mohamed Ben Yahia
- Research Unit of Quantum Physics 11 ES 54
- Faculty of Sciences of Monastir
- Tunisia
| | - Moncef Tounsi
- Interfaces Laboratory and Advanced Materials, (LIMA)
- Faculty of Sciences of Monastir
- Tunisia
| | - Fatma Aouaini
- Research Unit of Quantum Physics 11 ES 54
- Faculty of Sciences of Monastir
- Tunisia
| | - Salah Knani
- Northern Border University
- College of Science
- Arar
- Saudi Arabia
| | - Manel Ben Yahia
- Department of Physics
- Faculty of Science
- King AbdulAziz University
- Rabigh
- Saudi Arabia
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39
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Makrlík E, Sýkora D, Böhm S, Vaňura P. Cation-π interaction of Li+ with [6]helicene: Experimental and theoretical study. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.10.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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40
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Klepetářová B, Makrlík E, Sýkora D, Böhm S, Vaňura P. Cation–π interaction of the univalent silver cation with racemic [6]helicene in the gas phase and in the solid state. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.05.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Novák M, Foroutan-Nejad C, Marek R. Modulating Electron Sharing in Ion-π-Receptors via Substitution and External Electric Field: A Route toward Bond Strengthening. J Chem Theory Comput 2016; 12:3788-95. [DOI: 10.1021/acs.jctc.6b00586] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Martin Novák
- CEITEC −
Central European Institute of Technology, Masaryk University, Kamenice 5/A4, CZ-625 00 Brno, Czech Republic
| | - Cina Foroutan-Nejad
- CEITEC −
Central European Institute of Technology, Masaryk University, Kamenice 5/A4, CZ-625 00 Brno, Czech Republic
| | - Radek Marek
- CEITEC −
Central European Institute of Technology, Masaryk University, Kamenice 5/A4, CZ-625 00 Brno, Czech Republic
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42
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Abstract
Hydrogen bond directionality in the water dimer is explained on the basis of symmetry-adapted intermolecular perturbation theory which directly separates the intermolecular interaction energy into four physically interpretable components: electrostatics, exchange-repulsion, dispersion, and induction. Analysis of these four main contributions to the binding energy allows a deeper understanding of the dominant factors ruling the mutual arrangement of the two monomers. A preference for the linear configuration is shown to be due to a subtle interplay of all four energy components. While the first-order terms, electrostatic and exchange-repulsion, almost perfectly cancel each other near the equilibrium geometry of the dimer, the importance of the second- and higher-order terms, induction and dispersion, becomes evident.
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Affiliation(s)
- Maxim Tafipolsky
- Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Campus Hubland Nord , Emil-Fischer-Strasse 42, D-97074 Würzburg, Germany
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43
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Barman N, Banerjee S, Brandão P, Bauzá A, Frontera A, Saha A. Anion-dependent structural diversity of cadmium(II) complexes: synthesis, crystal structures, luminescence properties, and unusual C-H/σ supramolecular interactions involving σ-aromatic M2X2 cores. J COORD CHEM 2016. [DOI: 10.1080/00958972.2016.1173205] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Nikita Barman
- Department of Chemistry, Jadavpur University, Kolkata, India
| | - Saikat Banerjee
- Department of Chemistry, Jadavpur University, Kolkata, India
| | - Paula Brandão
- TEMA−NRD, Mechanical Engineering Department, University of Aveiro, Aveiro, Portugal
| | - Antonio Bauzá
- Departament de Química, Universitat de les IllesBalears, Palma (Baleares), Spain
| | - Antonio Frontera
- Departament de Química, Universitat de les IllesBalears, Palma (Baleares), Spain
| | - Amrita Saha
- Department of Chemistry, Jadavpur University, Kolkata, India
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44
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Wang CC, Duann YF. Enhancements of Trifluoroacetic Acylated Five-membered Heterocyclic Compounds Using as Additives in Dye Sensitized Solar Cells. J CHIN CHEM SOC-TAIP 2016. [DOI: 10.1002/jccs.201500440] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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45
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Huang S, O’Donnell KP, Keen JM, Rickard MA, McGinity JW, Williams RO. A New Extrudable Form of Hypromellose: AFFINISOL™ HPMC HME. AAPS PharmSciTech 2016; 17:106-19. [PMID: 26335416 DOI: 10.1208/s12249-015-0395-9] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 08/08/2015] [Indexed: 11/30/2022] Open
Abstract
Hypromellose is a hydrophilic polymer widely used in immediate- and modified-release oral pharmaceutical dosage forms. However, currently available grades of hypromellose are difficult, if not impossible, to process by hot melt extrusion (HME) because of their high glass transition temperature, high melt viscosity, and low degradation temperature. To overcome these challenges, a modified grade of hypromellose, AFFINISOL™ HPMC HME, was recently introduced. It has a significantly lower glass transition temperature and melt viscosity as compared to other available grades of hypromellose. The objective of this paper is to assess the extrudability and performance of AFFINISOL™ HPMC HME (100LV and 4M) as compared to other widely used polymers in HME, including HPMC 2910 100cP (the currently available hypromellose), Soluplus®, Kollidon® VA 64, and EUDRAGIT® E PO. Formulations containing polymer and carbamazepine (CBZ) were extruded on a co-rotating 16-mm twin-screw extruder, and the effect of temperature, screw speed, and feed rate was investigated. The performance of the solid dispersions was evaluated based on Flory-Huggins modeling and characterized by differential scanning calorimetry (DSC), X-ray powder diffraction (XRD), Raman spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, and dissolution. All formulations extruded well except for HPMC 2910 100cP, which resulted in over-torqueing the extruder (machine overloading because the motor cannot provide efficient energy to rotate the shaft). Among the HME extrudates, only the EUDRAGIT® E PO formulation was crystalline as confirmed by DSC, XRD, and Raman, which agreed with predictions from Flory-Huggins modeling. Dissolution testing was conducted under both sink and non-sink conditions. Sink dissolution testing in neutral media revealed that amorphous CBZ in the HME extrudates completely dissolved within 15 min, which was much more rapid than the time for complete dissolution of bulk CBZ (60 min) and EUDRAGIT® E PO solid dispersion (more than 6 h). Non-sink dissolution in acidic media testing revealed that only CBZ contained in the AFFINISOL™ HPMC HME, and EUDRAGIT® E PO solid dispersions rapidly supersaturated after 15 min, reaching a twofold drug concentration compared to the CBZ equilibrium solubility. In summary, AFFINISOL™ HPMC HME 100LV and AFFINISOL™ HPMC HME 4M are useful in the pharmaceutical HME process to increase wetting and dissolution properties of poorly water-soluble drugs like CBZ.
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46
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Cortopassi WA, Kumar K, Paton RS. Cation–π interactions in CREBBP bromodomain inhibition: an electrostatic model for small-molecule binding affinity and selectivity. Org Biomol Chem 2016; 14:10926-10938. [DOI: 10.1039/c6ob02234k] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A new model is presented to explain and predict binding affinity of aromatic and heteroaromatic ligands for the CREBBP bromodomain based on cation–π interaction strength.
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Affiliation(s)
| | - Kiran Kumar
- Chemistry Research Laboratory
- University of Oxford
- Oxford OX1 3TA
- UK
| | - Robert S. Paton
- Chemistry Research Laboratory
- University of Oxford
- Oxford OX1 3TA
- UK
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47
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Giese M, Albrecht M, Rissanen K. Experimental investigation of anion–π interactions – applications and biochemical relevance. Chem Commun (Camb) 2016; 52:1778-95. [DOI: 10.1039/c5cc09072e] [Citation(s) in RCA: 177] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Anion–π interactions, intuitively repulsive forces, turned from controversial to a well-established non-covalent interaction over the past quarter of a century.
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Affiliation(s)
- M. Giese
- Institut für Organische Chemie
- Universität Duisburg Essen
- 45141 Essen
- Germany
| | - M. Albrecht
- Institut für Organische Chemie
- RWTH Aachen University
- 52074 Aachen
- Germany
| | - K. Rissanen
- University of Jyvaskyla
- Department of Chemistry
- Nanoscience Center
- P.O. Box. 35
- FI-40014 University of Jyvaskyla
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48
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Experimental and theoretical study on cation–π interaction of the univalent thallium cation with [2.2.2]paracyclophane. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.10.074] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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49
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Tuning of chalcogen bonds by cation–π interactions: cooperative and diminutive effects. J Mol Model 2015; 21:300. [DOI: 10.1007/s00894-015-2850-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 10/23/2015] [Indexed: 10/22/2022]
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50
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Makrlík E, Sýkora D, Böhm S, Vaňura P, Církva V, Storch J, Polášek M. Cation-π interaction of Tl+ with [6]helicene: Experimental and DFT study. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2015.06.080] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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