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Foucaud Y, Siboulet B, Duvail M, Jonchere A, Diat O, Vuilleumier R, Dufrêche JF. Deciphering second harmonic generation signals. Chem Sci 2021; 12:15134-15142. [PMID: 34909155 PMCID: PMC8612378 DOI: 10.1039/d1sc03960a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 10/25/2021] [Indexed: 11/21/2022] Open
Abstract
Second harmonic generation (SHG) has emerged as one of the most powerful techniques used to selectively monitor surface dynamics and reactions for all types of interfaces as well as for imaging non-centrosymmetric structures, although the molecular origin of the SHG signal is still poorly understood. Here, we present a breakthrough approach to predict and interpret the SHG signal at the atomic level, which is freed from the hyperpolarisability concept and self-consistently considers the non-locality and the coupling with the environment. The direct ab initio method developed here shows that a bulk quadrupole contribution significantly overwhelms the interface dipole term in the purely interfacial induced second-order polarisation for water/air interfaces. The obtained simulated SHG responses are in unprecedented agreement with the experimental signal. This work not only paves the road for the prediction of SHG response from more complex interfaces of all types, but also suggests new insights in the interpretation of the SHG signal at a molecular level. In particular, it highlights the modest influence of the molecular orientation and the high significance of the bulk quadrupole contribution, which does not depend on the interface, in the total experimental response. Second harmonic generation is one of the most powerful techniques used to selectively probe interfaces of all types. The direct ab initio method developed here allows predicting the signal and highlights the importance of local and non-local effects.![]()
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Affiliation(s)
- Yann Foucaud
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM Marcoule France
| | | | - Magali Duvail
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM Marcoule France
| | - Alban Jonchere
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM Marcoule France
| | - Olivier Diat
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM Marcoule France
| | - Rodolphe Vuilleumier
- PASTEUR, Département de Chimie, Ecole Normale Supérieure, PSL University, Sorbonne Université, CNRS 75005 Paris France
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Costa R, Pereira CM, Silva AF, Brevet PF, Benichou E. Ordering and Nonideality of Air-Ionic Liquid Interfaces in Surface Second Harmonic Generation. J Phys Chem B 2020; 124:3954-3961. [PMID: 32324418 DOI: 10.1021/acs.jpcb.9b12025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The air-ionic liquid interface for a series of ionic liquids involving imidazolium cations [Cnmim] with different alkyl chain lengths (n = 2, 4, 6, 8, 10, and 12) and the same [NTf2] imide anion has been studied by polarization-resolved second harmonic generation (SHG). An increase as a function of the alkyl chain length of the orientational parameter reveals the increasing ordering of the air-pure ionic liquid interfaces although it is not possible to disentangle the change in mean tilt angle from a change in the tilt angle probability distribution width. Besides, the study of the air-mixed ([C12mim])x([C2mim])1-x[NTf2] ionic liquid interface clearly demonstrates the interfacial nonideality of the mixed ionic liquids. The long alkyl chain cation perturbs the interface as seen from the orientational parameter and displaces the short alkyl chain one for bulk mixture contents as low as 10%. At higher long alkyl chain cation bulk mixture contents, the interface behaves close to a pure long alkyl chain ionic liquid.
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Affiliation(s)
- Renata Costa
- Departamento de Quı̀mica e Bioquı̀mica, CIQUP-Physical Analytical Chemistry and Electrochemistry Group, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Carlos M Pereira
- Departamento de Quı̀mica e Bioquı̀mica, CIQUP-Physical Analytical Chemistry and Electrochemistry Group, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - A Fernando Silva
- Departamento de Quı̀mica e Bioquı̀mica, CIQUP-Physical Analytical Chemistry and Electrochemistry Group, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 4169-007 Porto, Portugal
| | - Pierre-François Brevet
- Université de Lyon, Université Claude Bernard Lyon, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
| | - Emmanuel Benichou
- Université de Lyon, Université Claude Bernard Lyon, CNRS, Institut Lumière Matière, F-69622 Villeurbanne, France
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E. Asmussen S, M. Lines A, Bottenus D, Heller F, A. Bryan S, Delegard C, Louie C, Lumetta G, Pellegrini K, Pitts WK, Clark S, Casella A. In Situ Monitoring and Kinetic Analysis of the Extraction of Nitric Acid by Tributyl Phosphate in N-Dodecane Using Raman Spectroscopy. SOLVENT EXTRACTION AND ION EXCHANGE 2019. [DOI: 10.1080/07366299.2019.1630071] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
| | | | - Danny Bottenus
- Pacific Northwest National Laboratory, Richland, WA, USA
| | - Forrest Heller
- Pacific Northwest National Laboratory, Richland, WA, USA
| | | | | | - Christina Louie
- Pacific Northwest National Laboratory, Richland, WA, USA
- Department of Engineering and Bioengineering, Washington State University, Pullman, WA, USA
| | - Gregg Lumetta
- Pacific Northwest National Laboratory, Richland, WA, USA
| | | | - W. Karl Pitts
- Pacific Northwest National Laboratory, Richland, WA, USA
| | - Sue Clark
- Pacific Northwest National Laboratory, Richland, WA, USA
- Department of Chemistry, Washington State University, Pullman, WA, USA
| | - Amanda Casella
- Pacific Northwest National Laboratory, Richland, WA, USA
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Sieffert N, Wipff G. Uranyl extraction by N,N-dialkylamide ligands studied using static and dynamic DFT simulations. Dalton Trans 2015; 44:2623-38. [DOI: 10.1039/c4dt02443e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DFT/MM-MD simulations highlight the structure and dynamics of mixed uranyl/nitrato/monoamides (L) complexes at an “oil”/water interface.
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Affiliation(s)
| | - Georges Wipff
- UMR 7177 CNRS
- Laboratoire MSM
- Institut de Chimie
- Université de Strasbourg
- 67000 Strasbourg
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5
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Benay G, Wipff G. Liquid–Liquid Extraction of Uranyl by TBP: The TBP and Ions Models and Related Interfacial Features Revisited by MD and PMF Simulations. J Phys Chem B 2014; 118:3133-49. [DOI: 10.1021/jp411332e] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- G. Benay
- Laboratoire MSM, UMR 7177, Institut de
Chimie, 1 rue B. Pascal, 67000 Strasbourg, France
| | - G. Wipff
- Laboratoire MSM, UMR 7177, Institut de
Chimie, 1 rue B. Pascal, 67000 Strasbourg, France
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Gassin PM, Champory R, Martin-Gassin G, Dufrêche JF, Diat O. Surfactant transfer across a water/oil interface: A diffusion/kinetics model for the interfacial tension evolution. Colloids Surf A Physicochem Eng Asp 2013. [DOI: 10.1016/j.colsurfa.2013.08.053] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Benay G, Wipff G. Liquid–Liquid Extraction of Uranyl by an Amide Ligand: Interfacial Features Studied by MD and PMF Simulations. J Phys Chem B 2013; 117:7399-415. [DOI: 10.1021/jp4028386] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- G. Benay
- Laboratoire MSM, UMR 7177, Institut de Chimie, 1 rue B. Pascal, 67000 Strasbourg, France
| | - G. Wipff
- Laboratoire MSM, UMR 7177, Institut de Chimie, 1 rue B. Pascal, 67000 Strasbourg, France
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Benay G, Wipff G. Oil-Soluble and Water-Soluble BTPhens and Their Europium Complexes in Octanol/Water Solutions: Interface Crossing Studied by MD and PMF Simulations. J Phys Chem B 2013; 117:1110-22. [DOI: 10.1021/jp3103707] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- G. Benay
- Laboratoire MSM, UMR CNRS 7177, Institut de Chimie,
1, rue B. Pascal, 67 000 Strasbourg, France
| | - G. Wipff
- Laboratoire MSM, UMR CNRS 7177, Institut de Chimie,
1, rue B. Pascal, 67 000 Strasbourg, France
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Martin-Gassin G, Gassin P, Couston L, Diat O, Benichou E, Brevet P. Nitric acid extraction with monoamide and diamide monitored by second harmonic generation at the water/dodecane interface. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2012.02.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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