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Hassani M, Mallon CJ, Monzy JN, Schmitz AJ, Brewer SH, Fenlon EE, Tucker MJ. Inhibition of vibrational energy flow within an aromatic scaffold via heavy atom effect. J Chem Phys 2023; 158:224201. [PMID: 37309893 PMCID: PMC10275622 DOI: 10.1063/5.0153760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 05/25/2023] [Indexed: 06/14/2023] Open
Abstract
The regulation of intramolecular vibrational energy redistribution (IVR) to influence energy flow within molecular scaffolds provides a way to steer fundamental processes of chemistry, such as chemical reactivity in proteins and design of molecular diodes. Using two-dimensional infrared (2D IR) spectroscopy, changes in the intensity of vibrational cross-peaks are often used to evaluate different energy transfer pathways present in small molecules. Previous 2D IR studies of para-azidobenzonitrile (PAB) demonstrated that several possible energy pathways from the N3 to the cyano-vibrational reporters were modulated by Fermi resonance, followed by energy relaxation into the solvent [Schmitz et al., J. Phys. Chem. A 123, 10571 (2019)]. In this work, the mechanisms of IVR were hindered via the introduction of a heavy atom, selenium, into the molecular scaffold. This effectively eliminated the energy transfer pathway and resulted in the dissipation of the energy into the bath and direct dipole-dipole coupling between the two vibrational reporters. Several structural variations of the aforementioned molecular scaffold were employed to assess how each interrupted the energy transfer pathways, and the evolution of 2D IR cross-peaks was measured to assess the changes in the energy flow. By eliminating the energy transfer pathways through isolation of specific vibrational transitions, through-space vibrational coupling between an azido (N3) and a selenocyanato (SeCN) probe is facilitated and observed for the first time. Thus, the rectification of this molecular circuitry is accomplished through the inhibition of energy flow using heavy atoms to suppress the anharmonic coupling and, instead, favor a vibrational coupling pathway.
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Affiliation(s)
- Majid Hassani
- Department of Chemistry, University of Nevada, Reno, Nevada 89557, USA
| | | | - Judith N. Monzy
- Department of Chemistry, Franklin & Marshall College, Lancaster, Pennsylvania 17604-3003, USA
| | - Andrew J. Schmitz
- Department of Chemistry, University of Nevada, Reno, Nevada 89557, USA
| | - Scott H. Brewer
- Department of Chemistry, Franklin & Marshall College, Lancaster, Pennsylvania 17604-3003, USA
| | - Edward E. Fenlon
- Department of Chemistry, Franklin & Marshall College, Lancaster, Pennsylvania 17604-3003, USA
| | - Matthew J. Tucker
- Department of Chemistry, University of Nevada, Reno, Nevada 89557, USA
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2
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Yang F, Shi L, Dong T, Yu P, Hu R, Wu H, Yang Y, Wang J. Solution Structures and Ultrafast Vibrational Energy Dissipation Dynamics in Cyclotetramethylene Tetranitramine. J Chem Phys 2022; 156:194305. [DOI: 10.1063/5.0087297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Steady-state and time-resolved infrared (IR) studies of cyclotetramethylene tetranitramine (HMX) were carried out, using the asymmetric nitro stretch as probe, to investigate its solution structures and vibrational energy transfer processes in pure DMSO and in DMSO/water mixture. Linear IR spectrum in the nitro stretching mode region shows two major bands and one minor band in DMSO but changes to a two-major band mainly picture when adding water as antisolvent of HMX, suggesting a transition from well solvated and less perfect b-conformation to a less solvated and close-to-perfect b-conformation. The latter bears a similar asymmetric nitro stretch vibration profile as the b-polymorph in crystal form. DFT computations of the nitro stretching vibrations suggest HMX in DMSO may be in a NO2 group rotated b-conformation. Two-dimensional IR cross-peak intensity reveals intramolecular energy transfer between the axial and equatorial nitro groups in the β-HMX on the ps time scale, which is slightly faster in the mixed solvent case. The importance of water as an antisolvent in influencing the equilibrium solvation structure, as well as the vibrational and orientational relaxation dynamics of HMX, is discussed.
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Affiliation(s)
- Fan Yang
- Institute of Chemistry, Chinese Academy of Sciences, China
| | - Lu Shi
- Institute of Chemistry Chinese Academy of Sciences, China
| | - Tiantian Dong
- Institute of Chemistry Chinese Academy of Sciences, China
| | - Pengyun Yu
- Institute of Chemistry, Chinese Academy of Sciences, China
| | - Rong Hu
- Institute of Chemistry Chinese Academy of Sciences, China
| | - Honglin Wu
- National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, China Academy of Engineering Physics, China
| | - Yanqiang Yang
- Department of Physics, Harbin Institute of Technology, Harbin Institute of Technology, China
| | - Jianping Wang
- Molecular Reaction Dynamics Laboratory, Institute of Chemistry Chinese Academy of Sciences, China
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Limits in the Enhancement Factor in Near-Brewster Angle Reflection Pump-Probe Two-Dimensional Infrared Spectroscopy. CHINESE J CHEM PHYS 2022. [DOI: 10.1063/1674-0068/cjcp2111234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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4
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Maiti KS. Two-dimensional Infrared Spectroscopy Reveals Better Insights of Structure and Dynamics of Protein. Molecules 2021; 26:molecules26226893. [PMID: 34833985 PMCID: PMC8618531 DOI: 10.3390/molecules26226893] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 11/07/2021] [Accepted: 11/10/2021] [Indexed: 11/25/2022] Open
Abstract
Proteins play an important role in biological and biochemical processes taking place in the living system. To uncover these fundamental processes of the living system, it is an absolutely necessary task to understand the structure and dynamics of the protein. Vibrational spectroscopy is an established tool to explore protein structure and dynamics. In particular, two-dimensional infrared (2DIR) spectroscopy has already proven its versatility to explore the protein structure and its ultrafast dynamics, and it has essentially unprecedented time resolutions to observe the vibrational dynamics of the protein. Providing several examples from our theoretical and experimental efforts, it is established here that two-dimensional vibrational spectroscopy provides exceptionally more information than one-dimensional vibrational spectroscopy. The structural information of the protein is encoded in the position, shape, and strength of the peak in 2DIR spectra. The time evolution of the 2DIR spectra allows for the visualisation of molecular motions.
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Affiliation(s)
- Kiran Sankar Maiti
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, 85748 Garching, Germany; ; Tel.: +49-89-289-54056
- Lehrstuhl für Experimental Physik, Ludwig-Maximilians-Universität München, Am Coulombwall 1, 85748 Garching, Germany
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5
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Crum VF, Kiefer LM, Kubarych KJ. Ultrafast vibrational dynamics of a solute correlates with dynamics of the solvent. J Chem Phys 2021; 155:134502. [PMID: 34624983 DOI: 10.1063/5.0061770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Two-dimensional infrared (2D-IR) spectroscopy is used to measure the spectral dynamics of the metal carbonyl complex cyclopentadienyl manganese tricarbonyl (CMT) in a series of linear alkyl nitriles. 2D-IR spectroscopy provides direct readout of solvation dynamics through spectral diffusion, probing the decay of frequency correlation induced by fluctuations of the solvent environment. 2D-IR simultaneously monitors intramolecular vibrational energy redistribution (IVR) among excited vibrations, which can also be influenced by the solvent through the spectral density rather than the dynamical friction underlying solvation. Here, we report that the CMT vibrational probe reveals solvent dependences in both the spectral diffusion and the IVR time scales, where each slows with increased alkyl chain length. In order to assess the degree to which solute-solvent interactions can be correlated with bulk solvent properties, we compared our results with low-frequency dynamics obtained from optical Kerr effect (OKE) spectroscopy-performed by others-on the same nitrile solvent series. We find excellent correlation between our spectral diffusion results and the orientational dynamics time scales from OKE. We also find a correlation between our IVR time scales and the amplitudes of the low-frequency spectral densities evaluated at the 90-cm-1 energy difference, corresponding to the gap between the two strong vibrational modes of the carbonyl probe. 2D-IR and OKE provide complementary perspectives on condensed phase dynamics, and these findings provide experimental evidence that at least at the level of dynamical correlations, some aspects of a solute vibrational dynamics can be inferred from properties of the solvent.
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Affiliation(s)
- Vivian F Crum
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, Michigan 48109, USA
| | - Laura M Kiefer
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, Michigan 48109, USA
| | - Kevin J Kubarych
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, Michigan 48109, USA
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Maiti KS. Ultrafast vibrational coupling between C H and C O band of cyclic amide 2-Pyrrolidinone revealed by 2DIR spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117749. [PMID: 31718967 DOI: 10.1016/j.saa.2019.117749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 10/28/2019] [Accepted: 11/01/2019] [Indexed: 06/10/2023]
Abstract
Coupling between C H and C O vibrational modes play an essential role on determination of biological structure and dynamics. However, due to the weakness of the C H absorption and strong absorption of the C O vibrational band make such experiments less straightforward than those with transitions of nearly the same strength. In this communication the characteristics of the C H and C O coupling has been studied using dual frequency two dimensional infrared spectroscopy. 2-Pyrrolidinone has been used as a model molecule of biological system. The coherent and incoherent couplings between C H and C O vibrational bands have been observed. The cross peaks dynamics have been discussed and time constant of the cross peak intensity has been calculated.
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Affiliation(s)
- Kiran Sankar Maiti
- Lehrstuhl für Physikalische Chemie, Technische Universität München, D-85747 Garching, Germany; Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, Garching 85748, Germany; Lehrstuhl für Experimental Physik, Ludwig-Maximilians-Universität München, Am Couombwall 1, Garching 85748, Germany.
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Schmitz AJ, Pandey HD, Chalyavi F, Shi T, Fenlon EE, Brewer SH, Leitner DM, Tucker MJ. Tuning Molecular Vibrational Energy Flow within an Aromatic Scaffold via Anharmonic Coupling. J Phys Chem A 2019; 123:10571-10581. [PMID: 31735035 DOI: 10.1021/acs.jpca.9b08010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
From guiding chemical reactivity in synthesis or protein folding to the design of energy diodes, intramolecular vibrational energy redistribution harnesses the power to influence the underlying fundamental principles of chemistry. To evaluate the ability to steer these processes, the mechanism and time scales of intramolecular vibrational energy redistribution through aromatic molecular scaffolds have been assessed by utilizing two-dimensional infrared (2D IR) spectroscopy. 2D IR cross peaks reveal energy relaxation through an aromatic scaffold from the azido- to the cyano-vibrational reporters in para-azidobenzonitrile (PAB) and para-(azidomethyl)benzonitrile (PAMB) prior to energy relaxation into the solvent. The rates of energy transfer are modulated by Fermi resonances, which are apparent by the coupling cross peaks identified within the 2D IR spectrum. Theoretical vibrational mode analysis allowed the determination of the origins of the energy flow, the transfer pathway, and a direct comparison of the associated transfer rates, which were in good agreement with the experimental results. Large variations in energy-transfer rates, approximately 1.9 ps for PAB and 23 ps for PAMB, illustrate the importance of strong anharmonic coupling, i.e., Fermi resonance, on the transfer pathways. In particular, vibrational energy rectification is altered by Fermi resonances of the cyano- and azido-modes allowing control of the propensity for energy flow.
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Affiliation(s)
- Andrew J Schmitz
- Department of Chemistry , University of Nevada , Reno , Nevada 89557 , United States
| | - Hari Datt Pandey
- Department of Chemistry , University of California , Riverside , California 92521 , United States
| | - Farzaneh Chalyavi
- Department of Chemistry , University of Nevada , Reno , Nevada 89557 , United States
| | - Tianjiao Shi
- Department of Chemistry , Franklin & Marshall College , Lancaster , Pennsylvania 17604-3003 , United States
| | - Edward E Fenlon
- Department of Chemistry , Franklin & Marshall College , Lancaster , Pennsylvania 17604-3003 , United States
| | - Scott H Brewer
- Department of Chemistry , Franklin & Marshall College , Lancaster , Pennsylvania 17604-3003 , United States
| | - David M Leitner
- Department of Chemistry , University of Nevada , Reno , Nevada 89557 , United States
| | - Matthew J Tucker
- Department of Chemistry , University of Nevada , Reno , Nevada 89557 , United States
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Zheng X, Yu P, Wang J. Ultrafast intramolecular vibrational energy transfer in carbon nitride hydrocolloid examined by femtosecond two-dimensional infrared spectroscopy. J Chem Phys 2019; 150:194703. [PMID: 31117771 DOI: 10.1063/1.5093542] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
In this work, ultrafast vibrational and structural processes in a graphitic carbon nitride hydrocolloid system were studied using a combination of linear infrared and nonlinear two-dimensional infrared (2D IR) spectroscopies. The experimentally observed three IR line shapes in the C=N stretching vibration frequency region were analyzed and attributed to the rigid and conjugated molecular frame of the prepared g-CN molecular species, which is believed to be a dimeric tris-s-triazine, as well as attributed to insignificant solvent influence on the delocalized C=N vibrations. Vibrational transition density cubes were also computed for the proposed g-CN dimer, confirming the heterocyclic C=N stretching nature of the three IR absorption peaks. Intramolecular vibrational energy transfer dynamics and spectral diffusion of the g-CN system were characterized by examining a series of time-dependent 2D IR spectra. A picosecond intramolecular vibrational energy redistribution process was found to occur among these delocalized C=N stretching modes, acting as an efficient vibrational energy transfer channel. This work reasonably connects the experimentally observed IR signature to a specific g-CN structure and also provides the first report on the ultrafast intramolecular processes of such carbon nitride systems. The obtained results are fundamentally important for understanding the molecular mechanisms of such carbon-nitride based functional materials.
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Affiliation(s)
- Xuan Zheng
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Pengyun Yu
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Jianping Wang
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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9
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Kiefer LM, Kubarych KJ. Two-dimensional infrared spectroscopy of coordination complexes: From solvent dynamics to photocatalysis. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.05.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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10
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He X, Xu F, Yu P, Wu Y, Wang F, Zhao Y, Wang J. Solvent-dependent structural dynamics of an azido-platinum complex revealed by linear and nonlinear infrared spectroscopy. Phys Chem Chem Phys 2018; 20:9984-9996. [PMID: 29619447 DOI: 10.1039/c7cp08606g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The vibrational and anisotropic relaxation dynamics and structural dynamics of a potential anticancer prodrug, trans,trans,trans-[Pt(N3)2(OH)2(py)2], were investigated using time-resolved infrared pump-probe spectroscopy and ultrafast two-dimensional infrared (2D IR) spectroscopy. Herein, two representative bio-friendly solvents, H2O and DMSO, were used, in which the local structural and dynamical variations were monitored using the antisymmetric linear combination of the two N3 stretching vibrational modes as an infrared probe. It was found that the vibrational relaxation process of the N3 antisymmetric stretching (as) mode in H2O is two to three times faster than that in DMSO. The anisotropic relaxation process of the anticancer prodrug was observed to be hindered in DMSO; this indicated a tighter solvent environment around the sample molecule in this solvent. The vibrational frequency time correlation of the N3 antisymmetric stretching mode in H2O decays with a time constant of 1.94 ps, in agreement with the hydrogen bond formation and breaking times of water. In DMSO, the frequency time correlation of the N3 as mode decays on a much longer time scale; this further indicates its sensitivity to the out-layer DMSO structural dynamics, which are relatively static in the experimental time window.
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Affiliation(s)
- Xuemei He
- Beijing National Laboratory for Molecular Sciences, Molecular Reaction Dynamics Laboratory, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
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11
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Abstract
The temperature dependence of the low-frequency C-O bands in the IR spectrum of [(η4-norbornadiene)Fe(CO)3], reminiscent of signal coalescence in dynamic NMR, was interpreted by Grevels (in 1987) as chemical exchange due to very fast rotation of the diene group. Since then, there has been both support and objection to this interpretation. We discuss these various claims involving both one- and two-dimensional IR and, largely on the basis of new density functional theory calculations, furnish support for Grevels' original interpretation.
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Affiliation(s)
- James J Turner
- School of Chemistry , University of Nottingham, University Park , Nottingham NG7 2RD , United Kingdom
| | - Michael Bühl
- School of Chemistry , University of St. Andrews , St. Andrews , Fife KY16 9ST , United Kingdom
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12
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Yang F, Dong X, Feng M, Zhao J, Wang J. Central-metal effect on intramolecular vibrational energy transfer of M(CO) 5Br (M = Mn, Re) probed by two-dimensional infrared spectroscopy. Phys Chem Chem Phys 2018; 20:3637-3647. [PMID: 29340363 DOI: 10.1039/c7cp05117d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Vibrational energy transfer in transition metal complexes with flexible structures in condensed phases is of central importance to catalytical chemistry processes. In this work, two molecules with different metal atoms, M(CO)5Br (where M = Mn, Re), were used as model systems, and their axial and radial carbonyl stretching modes as infrared probes. The central-metal effect on intramolecular vibrational energy redistribution (IVR) in M(CO)5Br was investigated in polar and nonpolar solvents. The linear infrared (IR) peak splitting between carbonyl vibrations increases as the metal atom changes from Mn to Re. The waiting-time dependent two-dimensional infrared diagonal- and off-diagonal peak amplitudes reveal a faster IVR process in Re(CO)5Br than in Mn(CO)5Br. With the aid of density functional theory (DFT) calculations, the central-metal effect on IVR time linearly correlates with the vibrational coupling strength between the two involved modes. In addition, the polar solvent is found to accelerate the IVR process by affecting the anharmonic vibrational potentials of a solute vibration mode.
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Affiliation(s)
- Fan Yang
- Beijing National Laboratory for Molecular Sciences, Molecular Reaction Dynamics Laboratory, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
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13
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Dong X, Yang F, Zhao J, Wang J. Efficient Intramolecular Vibrational Excitonic Energy Transfer in Ru3(CO)12 Cluster Revealed by Two-Dimensional Infrared Spectroscopy. J Phys Chem B 2018; 122:1296-1305. [DOI: 10.1021/acs.jpcb.7b10067] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xueqian Dong
- Beijing
National Laboratory for Molecular Sciences; Molecular Reaction Dynamics
Laboratory, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Fan Yang
- Beijing
National Laboratory for Molecular Sciences; Molecular Reaction Dynamics
Laboratory, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Juan Zhao
- Beijing
National Laboratory for Molecular Sciences; Molecular Reaction Dynamics
Laboratory, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jianping Wang
- Beijing
National Laboratory for Molecular Sciences; Molecular Reaction Dynamics
Laboratory, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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14
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Zang J, Feng M, Zhao J, Wang J. Micellar and bicontinuous microemulsion structures show different solute–solvent interactions: a case study using ultrafast nonlinear infrared spectroscopy. Phys Chem Chem Phys 2018; 20:19938-19949. [DOI: 10.1039/c8cp01024b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Using aqueous and organic probes to simultaneously explore the structural dynamics of reverse micellar and bicontinuous microemulsion structures.
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Affiliation(s)
- Jinger Zang
- Beijing National Laboratory for Molecular Sciences
- Molecular Reaction Dynamics Laboratory
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Minjun Feng
- Beijing National Laboratory for Molecular Sciences
- Molecular Reaction Dynamics Laboratory
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Juan Zhao
- Beijing National Laboratory for Molecular Sciences
- Molecular Reaction Dynamics Laboratory
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Jianping Wang
- Beijing National Laboratory for Molecular Sciences
- Molecular Reaction Dynamics Laboratory
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
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15
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He X, Yu P, Zhao J, Wang J. Efficient Vibrational Energy Transfer through Covalent Bond in Indigo Carmine Revealed by Nonlinear IR Spectroscopy. J Phys Chem B 2017; 121:9411-9421. [DOI: 10.1021/acs.jpcb.7b06766] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xuemei He
- Beijing
National Laboratory for Molecular Sciences, Molecular Reaction Dynamics
Laboratory, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Pengyun Yu
- Beijing
National Laboratory for Molecular Sciences, Molecular Reaction Dynamics
Laboratory, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Juan Zhao
- Beijing
National Laboratory for Molecular Sciences, Molecular Reaction Dynamics
Laboratory, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jianping Wang
- Beijing
National Laboratory for Molecular Sciences, Molecular Reaction Dynamics
Laboratory, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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16
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Wang J. Ultrafast two-dimensional infrared spectroscopy for molecular structures and dynamics with expanding wavelength range and increasing sensitivities: from experimental and computational perspectives. INT REV PHYS CHEM 2017. [DOI: 10.1080/0144235x.2017.1321856] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Jianping Wang
- Beijing National Laboratory for Molecular Sciences, Molecular Reaction Dynamics Laboratory, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, P.R. China
- College of Chemistry, University of Chinese Academy of Sciences, Beijing, P.R. China
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