1
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Nam S, Kim Y, Kim SH, Son HB, Han DY, Kim YH, Cho JH, Park J, Park S. Tailoring Three-Dimensional Cross-Linked Networks Based on Water-Soluble Polymeric Materials for Stable Silicon Anode. ACS APPLIED MATERIALS & INTERFACES 2024; 16:594-604. [PMID: 38114065 DOI: 10.1021/acsami.3c13896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
For stable battery operation of silicon (Si)-based anodes, utilizing cross-linked three-dimensional (3D) network binders has emerged as an effective strategy to mitigate significant volume fluctuations of Si particles. In the design of cross-linked network binders, careful selection of appropriate cross-linking agents is crucial to maintaining a balance between the robustness and functionality of the network. Herein, we strategically design and optimize a 3D cross-linked network binder through a comprehensive analysis of cross-linking agents. The proposed network is composed of poly(vinyl alcohol) grafted poly(acrylic acid) (PVA-g-PAA, PVgA) and aromatic diamines. PVgA is chosen as the polymer backbone owing to its high flexibility and facile synthesis using an ecofriendly water solvent. Subsequently, an aromatic diamine is employed as a cross-linker to construct a robust amide network that features a resonance-stabilized high modulus and enhanced adhesion. Comparative investigations of three cross-linkers, 2,2'-bis(trifluoromethyl)benzidine, 3,3'-oxidianiline, and 4,4'-oxybis[3-(trifluoromethyl)aniline] (TFODA), highlight the roles of the trifluoromethyl group (-CF3) and the ether linkage. Consequently, PVgA cross-linked with TFODA (PVgA-TFODA), featuring both -CF3 and -O-, establishes a well-balanced 3D network characterized by heightened elasticity and improved binding forces. The optimized Si and SiOx/graphite composite electrodes with the PVgA-TFODA binder demonstrate impressive structural stability and stable cycling. This study offers a novel perspective on designing cross-linked network binders, showcasing the benefits of a multidimensional approach considering chemical and physical interactions.
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Affiliation(s)
- Seoha Nam
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-gu, Pohang 37673, Republic of Korea
| | - Yeongseok Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-gu, Pohang 37673, Republic of Korea
| | - So Hyeon Kim
- Advanced Functional Polymers Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Hye Bin Son
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-gu, Pohang 37673, Republic of Korea
| | - Dong-Yeob Han
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-gu, Pohang 37673, Republic of Korea
| | - Yun Ho Kim
- Advanced Functional Polymers Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
- Advanced Materials and Chemical Engineering, KRICT School, University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea
| | - Jeong Ho Cho
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Jongmin Park
- Advanced Functional Polymers Center, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Soojin Park
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-gu, Pohang 37673, Republic of Korea
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2
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Satterthwaite L, Koumarianou G, Carroll PB, Sedlik RJ, Wang I, McCarthy MC, Patterson D. Low-Temperature Gas-Phase Kinetics of Ethanol-Methanol Heterodimer Formation. J Phys Chem A 2023; 127:4096-4102. [PMID: 37119198 PMCID: PMC10184117 DOI: 10.1021/acs.jpca.3c01312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
The structures of gas-phase noncovalently bound clusters have long been studied in supersonic expansions. This method of study, while providing a wealth of information about the nature of noncovalent bonds, precludes observation of the formation of the cluster, as the clusters form just after the orifice of the pulsed valve. Here, we directly observe formation of ethanol-methanol dimers via microwave spectroscopy in a controlled cryogenic environment. Time profiles of the concentration of reagents in the cell yielded gas-phase reaction rate constants of kMe-g = (2.8 ± 1.4) × 10-13 cm3 molecule-1 s-1 and kMe-t = (1.6 ± 0.8) × 10-13 cm3 molecule-1 s-1 for the pseudo-second-order ethanol-methanol dimerization reaction at 8 K. The relaxation cross section between the gauche and trans conformers of ethanol was also measured using the same technique. In addition, thermodynamic relaxation between conformers of ethanol over time allowed for selection of conformer stoichiometry in the ethanol-methanol dimerization reaction, but no change in the ratio of dimer conformers was observed with changing ethanol monomer stoichiometry.
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Affiliation(s)
- Lincoln Satterthwaite
- Department of Chemistry and Biochemistry, Building 232, University of California, Santa Barbara, California 93106, United States
| | - Greta Koumarianou
- Department of Chemistry and Biochemistry, Building 232, University of California, Santa Barbara, California 93106, United States
| | - P Brandon Carroll
- Center for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, Massachusetts 02138, United States
| | - Robert J Sedlik
- Physics Department, Broida Hall, University of California, Santa Barbara, California 93106, United States
| | - Irene Wang
- Physics Department, Broida Hall, University of California, Santa Barbara, California 93106, United States
| | - Michael C McCarthy
- Center for Astrophysics | Harvard & Smithsonian, 60 Garden Street, Cambridge, Massachusetts 02138, United States
| | - David Patterson
- Physics Department, Broida Hall, University of California, Santa Barbara, California 93106, United States
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3
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Du W, Zheng Y, Wang X, Lei J, Wang H, Tian X, Zou S, Bloino J, Gou Q, Caminati W, Grabow JU. Scissor-like Face to Face π-π Stacking: A Surprising Preference Induced by the Isocyano Group in the Self-Assembled Dimer of Phenyl Isocyanide. J Phys Chem Lett 2022; 13:9934-9940. [PMID: 36259781 DOI: 10.1021/acs.jpclett.2c02807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Phenyl isocyanide has been chosen as a prototype to probe the π-π interaction modulated by the -NC group, which has a chameleonic nature with two main resonance forms showing a triple bond and being carbenoid. The rotational spectroscopic investigation complemented with theoretical analyses indicates that the phenyl isocyanide dimer has a scissor-like configuration controlled by dispersive forces along with the formation of π-π stacking. This is the first rotational spectroscopic evidence, to the best of our knowledge, that the mono-substitution by an -NC group on benzene can activate the meta position in forming noncovalent interactions. This work also provides experimental evidence on the importance of substituent effects in modulating π-π stacked structures, as well as practical proof of a biased interaction behavior of isocyanide-substituted aromatic molecules.
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Affiliation(s)
- Weiping Du
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba, Chongqing 401331, China
| | - Yang Zheng
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba, Chongqing 401331, China
| | - Xiujuan Wang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba, Chongqing 401331, China
| | - Juncheng Lei
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba, Chongqing 401331, China
| | - Hao Wang
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba, Chongqing 401331, China
| | - Xiao Tian
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba, Chongqing 401331, China
| | - Siyu Zou
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba, Chongqing 401331, China
| | - Julien Bloino
- Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126 Pisa, Italy
| | - Qian Gou
- Department of Chemistry, School of Chemistry and Chemical Engineering, Chongqing University, Shapingba, Chongqing 401331, China
| | - Walther Caminati
- Dipartimento di Chimica "G. Ciamician", Università di Bologna, I-40126 Bologna, Italy
| | - Jens-Uwe Grabow
- Institut für Physikalische Chemie & Elektrochemie, Leibniz Universität Hannover, 30167 Hannover, Germany
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4
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Li X, Spada L, Alessandrini S, Zheng Y, Lengsfeld KG, Grabow J, Feng G, Puzzarini C, Barone V. Gestapelt, nicht geklebt: Enthüllung der π→π*‐Wechselwirkung mithilfe des Benzofuran‐Formaldehyd‐Komplexes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xiaolong Li
- School of Chemistry and Chemical Engineering Chongqing University Daxuecheng South Rd. 55 Chongqing 401331 China
| | - Lorenzo Spada
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italien
| | - Silvia Alessandrini
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italien
- Dipartimento di Chimica “Giacomo Ciamician” Università di Bologna Via F. Selmi 2 40126 Bologna Italien
| | - Yang Zheng
- School of Chemistry and Chemical Engineering Chongqing University Daxuecheng South Rd. 55 Chongqing 401331 China
| | - Kevin Gregor Lengsfeld
- Institut für Physikalische Chemie und Elektrochemie Gottfried Wilhelm Leibniz Universität Hannover Callinstraße 3A 30167 Hannover Deutschland
| | - Jens‐Uwe Grabow
- Institut für Physikalische Chemie und Elektrochemie Gottfried Wilhelm Leibniz Universität Hannover Callinstraße 3A 30167 Hannover Deutschland
| | - Gang Feng
- School of Chemistry and Chemical Engineering Chongqing University Daxuecheng South Rd. 55 Chongqing 401331 China
| | - Cristina Puzzarini
- Dipartimento di Chimica “Giacomo Ciamician” Università di Bologna Via F. Selmi 2 40126 Bologna Italien
| | - Vincenzo Barone
- Scuola Normale Superiore Piazza dei Cavalieri 7 56126 Pisa Italien
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5
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Li X, Spada L, Alessandrini S, Zheng Y, Lengsfeld KG, Grabow JU, Feng G, Puzzarini C, Barone V. Stacked but not Stuck: Unveiling the Role of π→π* Interactions with the Help of the Benzofuran-Formaldehyde Complex. Angew Chem Int Ed Engl 2021; 61:e202113737. [PMID: 34697878 PMCID: PMC9298890 DOI: 10.1002/anie.202113737] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Indexed: 12/14/2022]
Abstract
The 1:1 benzofuran–formaldehyde complex has been chosen as model system for analyzing π→π* interactions in supramolecular organizations involving heteroaromatic rings and carbonyl groups. A joint “rotational spectroscopy–quantum chemistry” strategy unveiled the dominant role of π→π* interactions in tuning the intermolecular interactions of such adduct. The exploration of the intermolecular potential energy surface led to the identification of 14 low‐energy minima, with 4 stacked isomers being more stable than those linked by hydrogen bond or lone‐pair→π interactions. All energy minima are separated by loose transition states, thus suggesting an effective relaxation to the global minimum under the experimental conditions. This expectation has been confirmed by the experimental detection of only one species, which was unambiguously assigned owing to the computation of accurate spectroscopic parameters and the characterization of 11 isotopologues. The large number of isotopic species opened the way to the determination of the first semi‐experimental equilibrium structure for a molecular complex of such a dimension.
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Affiliation(s)
- Xiaolong Li
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, Chongqing, 401331, China
| | - Lorenzo Spada
- Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126, Pisa, Italy
| | - Silvia Alessandrini
- Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126, Pisa, Italy.,Dipartimento di Chimica "Giacomo Ciamician", University of Bologna, Via F. Selmi 2, 40126, Bologna, Italy
| | - Yang Zheng
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, Chongqing, 401331, China
| | - Kevin Gregor Lengsfeld
- Institut für Physikalische Chemie and Elektrochemie, Gottfried Wilhelm Leibniz Universität Hannover, Callinstrasse 3A, 30167, Hannover, Germany
| | - Jens-Uwe Grabow
- Institut für Physikalische Chemie and Elektrochemie, Gottfried Wilhelm Leibniz Universität Hannover, Callinstrasse 3A, 30167, Hannover, Germany
| | - Gang Feng
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, Chongqing, 401331, China
| | - Cristina Puzzarini
- Dipartimento di Chimica "Giacomo Ciamician", University of Bologna, Via F. Selmi 2, 40126, Bologna, Italy
| | - Vincenzo Barone
- Scuola Normale Superiore, Piazza dei Cavalieri 7, 56126, Pisa, Italy
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6
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Léon I, Tasinato N, Spada L, Alonso ER, Mata S, Balbi A, Puzzarini C, Alonso JL, Barone V. Looking for the Elusive Imine Tautomer of Creatinine: Different States of Aggregation Studied by Quantum Chemistry and Molecular Spectroscopy. Chempluschem 2021; 86:1374-1386. [PMID: 34255935 PMCID: PMC8519097 DOI: 10.1002/cplu.202100224] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/22/2021] [Indexed: 01/06/2023]
Abstract
New spectroscopic experiments and state-of-the-art quantum-chemical computations of creatinine in different aggregation states unequivocally unveiled a significant tuning of tautomeric equilibrium by the environment: from the exclusive presence of the amine tautomer in the solid state and aqueous solution to a mixture of amine and imine tautomers in the gas phase. Quantum-chemical calculations predict the amine species as the most stable tautomer by about 30 kJ mol-1 in condensed phases. On the contrary, moving to the isolated forms, both Z and E imine isomers become more stable by about 7 kJ mol-1 . Since the imine isomers and one amine tautomer are separated by significant energy barriers, all of them should be present in the gas phase. This prediction has indeed been confirmed by high-resolution rotational spectroscopy, which provides the first experimental characterization of the elusive imine tautomer. The interpretation of the complicated hyperfine structure of the rotational spectrum, originated by three 14 N nuclei, makes it possible to use the spectral signatures as a sort of fingerprint for each individual tautomer in the complex sample.
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Affiliation(s)
- Iker Léon
- Grupo de Espectroscopia Molecular (GEM), Edificio Quifima, Laboratorios de Espectroscopia y Bioespectroscopia Parque Cientifico UVa, Universidad de Valladolid, 47011, Valladolid, Spain
| | - Nicola Tasinato
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126, Pisa, Italy
| | - Lorenzo Spada
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126, Pisa, Italy.,Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum -, Università di Bologna, Via Selmi 2, 40126, Bologna, Italy
| | - Elena R Alonso
- Grupo de Espectroscopia Molecular (GEM), Edificio Quifima, Laboratorios de Espectroscopia y Bioespectroscopia Parque Cientifico UVa, Universidad de Valladolid, 47011, Valladolid, Spain
| | - Santiago Mata
- Grupo de Espectroscopia Molecular (GEM), Edificio Quifima, Laboratorios de Espectroscopia y Bioespectroscopia Parque Cientifico UVa, Universidad de Valladolid, 47011, Valladolid, Spain
| | - Alice Balbi
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126, Pisa, Italy
| | - Cristina Puzzarini
- Dipartimento di Chimica "Giacomo Ciamician", Alma Mater Studiorum -, Università di Bologna, Via Selmi 2, 40126, Bologna, Italy
| | - Jose L Alonso
- Grupo de Espectroscopia Molecular (GEM), Edificio Quifima, Laboratorios de Espectroscopia y Bioespectroscopia Parque Cientifico UVa, Universidad de Valladolid, 47011, Valladolid, Spain
| | - Vincenzo Barone
- Scuola Normale Superiore, Piazza dei Cavalieri 7, I-56126, Pisa, Italy
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7
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Li W, Quesada-Moreno MM, Pinacho P, Schnell M. Unlocking the Water Trimer Loop: Isotopic Study of Benzophenone-(H 2 O) 1-3 Clusters with Rotational Spectroscopy. Angew Chem Int Ed Engl 2021; 60:5323-5330. [PMID: 33289239 PMCID: PMC7986920 DOI: 10.1002/anie.202013899] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Indexed: 12/16/2022]
Abstract
Examined here are the structures of complexes of benzophenone microsolvated with up to three water molecules by using broadband rotational spectroscopy and the cold conditions of a molecular jet. The analysis shows that the water molecules dock sideways on benzophenone for the water monomer and dimer moieties, and they move above one of the aromatic rings when the water cluster grows to the trimer. The rotational spectra shows that the water trimer moiety in the complex adopts an open‐loop arrangement. Ab initio calculations face a dilemma of identifying the global minimum between the open loop and the closed loop, which is only solved when zero‐point vibrational energy correction is applied. An OH⋅⋅⋅π bond and a Bürgi‐Dunitz interaction between benzophenone and the water trimer are present in the cluster. This work shows the subtle balance between water–water and water–solute interactions when the solute molecule offers several different anchor sites for water molecules.
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Affiliation(s)
- Weixing Li
- Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | | | - Pablo Pinacho
- Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany
| | - Melanie Schnell
- Deutsches Elektronen-Synchrotron, Notkestrasse 85, 22607, Hamburg, Germany.,Christian-Albrechts-Universität zu Kiel, Institute of Physical Chemistry, Max-Eyth-Str. 1, 24118, Kiel, Germany
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8
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Li W, Quesada‐Moreno MM, Pinacho P, Schnell M. Unlocking the Water Trimer Loop: Isotopic Study of Benzophenone‐(H
2
O)
1–3
Clusters with Rotational Spectroscopy. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202013899] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Weixing Li
- Deutsches Elektronen-Synchrotron Notkestrasse 85 22607 Hamburg Germany
| | | | - Pablo Pinacho
- Deutsches Elektronen-Synchrotron Notkestrasse 85 22607 Hamburg Germany
| | - Melanie Schnell
- Deutsches Elektronen-Synchrotron Notkestrasse 85 22607 Hamburg Germany
- Christian-Albrechts-Universität zu Kiel Institute of Physical Chemistry Max-Eyth-Str. 1 24118 Kiel Germany
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9
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Affiliation(s)
- Marcel A. Strauss
- Institut für Organische Chemie Justus-Liebig Universität Gießen Heinrich-Buff-Ring 17 35392 Gießen Deutschland
- Zentrum für Materialforschung (LaMa) Justus-Liebig Universität Gießen Heinrich-Buff-Ring 16 35392 Gießen Deutschland
| | - Hermann A. Wegner
- Institut für Organische Chemie Justus-Liebig Universität Gießen Heinrich-Buff-Ring 17 35392 Gießen Deutschland
- Zentrum für Materialforschung (LaMa) Justus-Liebig Universität Gießen Heinrich-Buff-Ring 16 35392 Gießen Deutschland
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10
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Abstract
The importance of London dispersion interactions in solution is an ongoing debate. Although the significance of dispersion for structure and stability is widely accepted, the degree of its attenuation in solution is still not properly understood. Quantitative evaluations are derived mostly from computations. Experimental data provide guidelines to include London dispersion in solution phase design. Herein, dispersive interactions were examined with an azobenzene probe. Alkyl substituents in meta positions of the azobenzene core were systematically varied and the effect on the half-lives for the thermally induced Z to E isomerization in several alkane solvents was determined. The results show that intramolecular dispersion is only marginally influenced. In solvents with low surface tension, reduced destabilizing solvent-solvent interactions increase the half-life up to 20 %. Specific individual interactions between alkyl chains on the azobenzene and those of the solvent lead to additional fluctuations of the half-lives. These presumably result from structural changes of the conformer ensemble.
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Affiliation(s)
- Marcel A. Strauss
- Institute of Organic ChemistryJustus Liebig University GiessenHeinrich-Buff-Ring 1735392GiessenGermany
- Center for Materials Research (LaMa)Justus Liebig University GiessenHeinrich-Buff-Ring 1635392GiessenGermany
| | - Hermann A. Wegner
- Institute of Organic ChemistryJustus Liebig University GiessenHeinrich-Buff-Ring 1735392GiessenGermany
- Center for Materials Research (LaMa)Justus Liebig University GiessenHeinrich-Buff-Ring 1635392GiessenGermany
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11
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Quesada Moreno MM, Pinacho P, Pérez C, Šekutor M, Schreiner PR, Schnell M. London Dispersion and Hydrogen-Bonding Interactions in Bulky Molecules: The Case of Diadamantyl Ether Complexes. Chemistry 2020; 26:10817-10825. [PMID: 32428323 PMCID: PMC7497036 DOI: 10.1002/chem.202001444] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 05/12/2020] [Indexed: 02/05/2023]
Abstract
Diadamantyl ether (DAE, C20 H30 O) represents a good model to study the interplay between London dispersion and hydrogen-bond interactions. By using broadband rotational spectroscopy, an accurate experimental structure of the diadamantyl ether monomer is obtained and its aggregates with water and a variety of aliphatic alcohols of increasing size are analyzed. In the monomer, C-H⋅⋅⋅H-C London dispersion attractions between the two adamantyl subunits further stabilize its structure. Water and the alcohol partners bind to diadamantyl ether through hydrogen bonding and non-covalent Owater/alcohol ⋅⋅⋅H-CDAE and C-Halcohol ⋅⋅⋅H-CDAE interactions. Electrostatic contributions drive the stabilization of all the complexes, whereas London dispersion interactions become more pronounced with increasing size of the alcohol. Complexes with dominant dispersion contributions are significantly higher in energy and were not observed in the experiment. The results presented herein shed light on the first steps of microsolvation and aggregation of molecular complexes with London dispersion energy donor (DED) groups and the kind of interactions that control them.
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Affiliation(s)
- María Mar Quesada Moreno
- Deutsches Elektronen-SynchrotronNotkestr. 8522607HamburgGermany
- Institute of Physical ChemistryChristian-Albrechts-Universität zu KielMax-Eyth-Str. 124118KielGermany
| | - Pablo Pinacho
- Deutsches Elektronen-SynchrotronNotkestr. 8522607HamburgGermany
- Institute of Physical ChemistryChristian-Albrechts-Universität zu KielMax-Eyth-Str. 124118KielGermany
| | - Cristóbal Pérez
- Deutsches Elektronen-SynchrotronNotkestr. 8522607HamburgGermany
- Institute of Physical ChemistryChristian-Albrechts-Universität zu KielMax-Eyth-Str. 124118KielGermany
| | - Marina Šekutor
- Institute of Organic ChemistryJustus Liebig UniversityHeinrich-Buff-Ring 1735392GiessenGermany
| | - Peter R. Schreiner
- Institute of Organic ChemistryJustus Liebig UniversityHeinrich-Buff-Ring 1735392GiessenGermany
| | - Melanie Schnell
- Deutsches Elektronen-SynchrotronNotkestr. 8522607HamburgGermany
- Institute of Physical ChemistryChristian-Albrechts-Universität zu KielMax-Eyth-Str. 124118KielGermany
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12
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Strauss MA, Wegner HA. Exploring London Dispersion and Solvent Interactions at Alkyl-Alkyl Interfaces Using Azobenzene Switches. Angew Chem Int Ed Engl 2019; 58:18552-18556. [PMID: 31556224 PMCID: PMC6916273 DOI: 10.1002/anie.201910734] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Indexed: 12/18/2022]
Abstract
Interactions on the molecular level control structure as well as function. Especially interfaces between innocent alkyl groups are hardly studied although they are of great importance in larger systems. Herein, London dispersion in conjunction with solvent interactions between linear alkyl chains was examined with an azobenzene-based experimental setup. Alkyl chains in all meta positions of the azobenzene core were systematically elongated, and the change in rate for the thermally induced Z→E isomerization in n-decane was determined. The stability of the Z-isomer increased with longer chains and reached a maximum for n-butyl groups. Further elongation led to faster isomerization. The origin of the intramolecular interactions was elaborated by various techniques, including 1 H NOESY NMR spectroscopy. The results indicate that there are additional long-range interactions between n-alkyl chains with the opposite phenyl core in the Z-state. These interactions are most likely dominated by attractive London dispersion. This work provides rare insight into the stabilizing contributions of highly flexible groups in an intra- as well as an intermolecular setting.
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Affiliation(s)
- Marcel A. Strauss
- Institute of Organic ChemistryJustus-Liebig University GiessenHeinrich-Buff-Ring 1735392GiessenGermany
- Center for Materials Research (LaMa)Justus-Liebig University GiessenHeinrich-Buff-Ring 1635392GiessenGermany
| | - Hermann A. Wegner
- Institute of Organic ChemistryJustus-Liebig University GiessenHeinrich-Buff-Ring 1735392GiessenGermany
- Center for Materials Research (LaMa)Justus-Liebig University GiessenHeinrich-Buff-Ring 1635392GiessenGermany
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13
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Strauss MA, Wegner HA. Evaluierung von London‐Dispersions‐ und Lösungsmittel‐Interaktionen an Alkyl‐Alkyl‐Grenzflächen mittels Azobenzolschaltern. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201910734] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Marcel A. Strauss
- Institut für Organische ChemieJustus-Liebig-Universität Giessen Heinrich-Buff-Ring 17 35392 Giessen Deutschland
- Zentrum für Materialforschung (LaMa)Justus-Liebig-Universität Giessen Heinrich-Buff-Ring 16 35392 Giessen Deutschland
| | - Hermann A. Wegner
- Institut für Organische ChemieJustus-Liebig-Universität Giessen Heinrich-Buff-Ring 17 35392 Giessen Deutschland
- Zentrum für Materialforschung (LaMa)Justus-Liebig-Universität Giessen Heinrich-Buff-Ring 16 35392 Giessen Deutschland
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Bernhard D, Fatima M, Poblotzki A, Steber AL, Pérez C, Suhm MA, Schnell M, Gerhards M. Dispersion-controlled docking preference: multi-spectroscopic study on complexes of dibenzofuran with alcohols and water. Phys Chem Chem Phys 2019; 21:16032-16046. [DOI: 10.1039/c9cp02635e] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The planarity and rigidity of dibenzofuran inverts the docking preference for increasingly bulky R-OH solvent molecules, compared to the closely related diphenyl ether. Now, London dispersion favors OH⋯π hydrogen bonding.
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Affiliation(s)
- D. Bernhard
- TU Kaiserslautern
- Fachbereich Chemie & Research Center Optimas
- D-67663 Kaiserslautern
- Germany
| | - M. Fatima
- Deutsches Elektronen-Synchrotron (DESY)
- Notkestr. 85
- D-22607 Hamburg
- Germany & Institute of Physical Chemistry
- Christian-Albrechts-Universität zu Kiel
| | - A. Poblotzki
- Institut für Physikalische Chemie
- Universität Göttingen
- D-37077 Göttingen
- Germany
| | - A. L. Steber
- Deutsches Elektronen-Synchrotron (DESY)
- Notkestr. 85
- D-22607 Hamburg
- Germany & Institute of Physical Chemistry
- Christian-Albrechts-Universität zu Kiel
| | - C. Pérez
- Deutsches Elektronen-Synchrotron (DESY)
- Notkestr. 85
- D-22607 Hamburg
- Germany & Institute of Physical Chemistry
- Christian-Albrechts-Universität zu Kiel
| | - M. A. Suhm
- Institut für Physikalische Chemie
- Universität Göttingen
- D-37077 Göttingen
- Germany
| | - M. Schnell
- Deutsches Elektronen-Synchrotron (DESY)
- Notkestr. 85
- D-22607 Hamburg
- Germany & Institute of Physical Chemistry
- Christian-Albrechts-Universität zu Kiel
| | - M. Gerhards
- TU Kaiserslautern
- Fachbereich Chemie & Research Center Optimas
- D-67663 Kaiserslautern
- Germany
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