1
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Pyles CG, Gretz GM, Spector IC, Massari AM. Ultrafast Dynamics Experienced by Carbon Dioxide Diffusing through Polymer Matrices. J Phys Chem B 2021; 125:8997-9004. [PMID: 34329557 DOI: 10.1021/acs.jpcb.1c04223] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fourier transform infrared, pump-probe polarization anisotropy, and two-dimensional infrared spectroscopies were used to study the steady-state and time-dependent behavior of carbon dioxide dissolved in three different polymer systems. Gas reorientation dynamics in poly(methyl methacrylate), poly(methyl acrylate), and poly(dimethylsiloxane) were sensitive to the nature of chemical interactions between the gas and polymer, as well as whether the polymer was in a glassy or rubbery phase. The homogeneous dynamics experienced by the asymmetric stretching vibration were found to be fastest for rubbery polymers with weak, nonspecific gas-polymer interactions. Spectral diffusion was absent for the carbon dioxide vibrational mode in glassy poly(methyl methacrylate) but was activated for the chemically similar but rubbery poly(methyl acrylate). The vibrational dynamics are shown to have a direct correlation with the diffusivity of carbon dioxide through the polymer matrices.
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Affiliation(s)
- Cynthia G Pyles
- University of Minnesota-Twin Cities, 207 Pleasant St. SE, Minneapolis, Minnesota 55454, United States
| | - Grace M Gretz
- University of Minnesota-Twin Cities, 207 Pleasant St. SE, Minneapolis, Minnesota 55454, United States
| | - Ivan C Spector
- University of Minnesota-Twin Cities, 207 Pleasant St. SE, Minneapolis, Minnesota 55454, United States
| | - Aaron M Massari
- University of Minnesota-Twin Cities, 207 Pleasant St. SE, Minneapolis, Minnesota 55454, United States
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2
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Olson CM, Massari AM. The role of ultrafast structural dynamics with physical and chemical changes in polydimethylsiloxane thin films by two-dimensional IR spectroscopy. J Chem Phys 2021; 154:174902. [PMID: 34241076 DOI: 10.1063/5.0047463] [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
Fourier transform infrared (FTIR) and two-dimensional IR (2D-IR) spectroscopies were applied to polydimethylsiloxane (PDMS) cross-linked elastomer films. The vibrational probe for the systems studied was a silicon hydride mode that was covalently bound to the polymer chains. The structure and dynamics reported by this mode were measured in response to a wide range of chemical and physical perturbations, including elevated curing temperature, increased curing agent concentration, mechanical compression, and cooling to near the glass transition temperature. The FTIR spectra were found to be relatively insensitive to all of these perturbations, and 2D-IR spectroscopy revealed that this was due to the overwhelming influence of heterogeneity on the spectral line shape. Surprisingly, the deconvoluted spectral line shapes showed that there were only slight differences in the heterogeneous and homogeneous dynamics even with the drastic macroscopic changes occurring in different systems. In the context of modeling polymer behavior, the results confirm that dynamics on the ultrafast time scale need not be included to properly model PDMS elasticity.
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Affiliation(s)
- Courtney M Olson
- Department of Chemistry, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA
| | - Aaron M Massari
- Department of Chemistry, University of Minnesota, Twin Cities, Minneapolis, Minnesota 55455, USA
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3
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Fernández-Terán R, Ruf J, Hamm P. Vibrational Couplings in Hydridocarbonyl Complexes: A 2D-IR Perspective. Inorg Chem 2020; 59:7721-7726. [DOI: 10.1021/acs.inorgchem.0c00750] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ricardo Fernández-Terán
- Department of Chemistry, University of Zurich. Winterthurerstrasse 190, Zurich 8057, Switzerland
| | - Jeannette Ruf
- Department of Chemistry, University of Zurich. Winterthurerstrasse 190, Zurich 8057, Switzerland
| | - Peter Hamm
- Department of Chemistry, University of Zurich. Winterthurerstrasse 190, Zurich 8057, Switzerland
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4
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Sánchez-Sánchez K, Castillo-García AA, Cervantes-Vásquez M, Ortiz-Pastrana N, Paz-Sandoval MA. Butadienesulfonyl iridium complexes with phosphine and carbonyl ligands. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.120929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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5
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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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6
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Olson CM, Massari AM. Influence of Solvent Swelling on Ultrafast Structural Dynamics in Polydimethylsiloxane Thin Films by Two-Dimensional IR Spectroscopy. J Phys Chem A 2018; 122:1592-1599. [DOI: 10.1021/acs.jpca.7b12128] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Courtney M. Olson
- Department of Chemistry, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Aaron M. Massari
- Department of Chemistry, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, United States
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7
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Olson CM, Grofe A, Huber CJ, Spector IC, Gao J, Massari AM. Enhanced vibrational solvatochromism and spectral diffusion by electron rich substituents on small molecule silanes. J Chem Phys 2017; 147:124302. [PMID: 28964044 PMCID: PMC5848733 DOI: 10.1063/1.5003908] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 09/08/2017] [Indexed: 01/14/2023] Open
Abstract
Fourier transform infrared and two-dimensional IR (2D-IR) spectroscopies were applied to two different silanes in three different solvents. The selected solutes exhibit different degrees of vibrational solvatochromism for the Si-H vibration. Density functional theory calculations confirm that this difference in sensitivity is the result of higher mode polarization with more electron withdrawing ligands. This mode sensitivity also affects the extent of spectral diffusion experienced by the silane vibration, offering a potential route to simultaneously optimize the sensitivity of vibrational probes in both steady-state and time-resolved measurements. Frequency-frequency correlation functions obtained by 2D-IR show that both solutes experience dynamics on similar time scales and are consistent with a picture in which weakly interacting solvents produce faster, more homogeneous fluctuations. Molecular dynamics simulations confirm that the frequency-frequency correlation function obtained by 2D-IR is sensitive to the presence of hydrogen bonding dynamics in the surrounding solvation shell.
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Affiliation(s)
- Courtney M Olson
- Department of Chemistry, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, USA
| | - Adam Grofe
- Department of Chemistry, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, USA
| | | | - Ivan C Spector
- Department of Chemistry, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, USA
| | - Jiali Gao
- Department of Chemistry, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, USA
| | - Aaron M Massari
- Department of Chemistry, University of Minnesota-Twin Cities, Minneapolis, Minnesota 55455, USA
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8
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Eckert PA, Kubarych KJ. Oxidation-State-Dependent Vibrational Dynamics Probed with 2D-IR. J Phys Chem A 2017; 121:2896-2902. [DOI: 10.1021/acs.jpca.6b12898] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peter A. Eckert
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Kevin J. Kubarych
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
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9
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Durango-García CJ, Jalife S, Cabellos JL, Martínez SH, Jimenez-Halla JOC, Pan S, Merino G, Montiel-Palma V. Back to basics: identification of reaction intermediates in the mechanism of a classic ligand substitution reaction on Vaska's complex. RSC Adv 2016. [DOI: 10.1039/c5ra20969b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The mechanism of methylation of Vaska's complextrans-[ClIr(CO)(PPh3)2] by trimethylgallium was studied and the identification of the spectroscopically detected intermediates was achieved with the aid of computational methods.
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Affiliation(s)
- Clara J. Durango-García
- Centro de Investigaciones Químicas
- Universidad Autónoma del Estado de Morelos
- Cuernavaca
- Mexico
- Facultad de Ciencias
| | - Said Jalife
- Departamento de Física Aplicada
- CINVESTAV Unidad Mérida
- Mérida 97310
- Mexico
| | - José Luis Cabellos
- Departamento de Física Aplicada
- CINVESTAV Unidad Mérida
- Mérida 97310
- Mexico
| | - Saul H. Martínez
- Departamento de Física Aplicada
- CINVESTAV Unidad Mérida
- Mérida 97310
- Mexico
| | | | - Sudip Pan
- Department of Chemistry and Center for Theoretical Studies
- Indian Institute of Technology Kharagpur
- India
| | - Gabriel Merino
- Departamento de Física Aplicada
- CINVESTAV Unidad Mérida
- Mérida 97310
- Mexico
| | - Virginia Montiel-Palma
- Centro de Investigaciones Químicas
- Universidad Autónoma del Estado de Morelos
- Cuernavaca
- Mexico
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10
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Jones BH, Huber CJ, Spector IC, Tabet AM, Butler RL, Hang Y, Massari AM. Correlating solvent dynamics and chemical reaction rates using binary solvent mixtures and two-dimensional infrared spectroscopy. J Chem Phys 2015; 142:212441. [DOI: 10.1063/1.4920953] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Affiliation(s)
- Brynna H. Jones
- Department of Chemistry, University of Minnesota—Twin Cities, Minneapolis, Minnesota 55455, USA
| | - Christopher J. Huber
- Department of Chemistry, University of Minnesota—Twin Cities, Minneapolis, Minnesota 55455, USA
| | - Ivan C. Spector
- Department of Chemistry, University of Minnesota—Twin Cities, Minneapolis, Minnesota 55455, USA
| | - Anthony M. Tabet
- Department of Chemistry, University of Minnesota—Twin Cities, Minneapolis, Minnesota 55455, USA
| | - RiAnna L. Butler
- Department of Chemistry, University of Minnesota—Twin Cities, Minneapolis, Minnesota 55455, USA
| | - Ying Hang
- Department of Chemistry, University of Minnesota—Twin Cities, Minneapolis, Minnesota 55455, USA
| | - Aaron M. Massari
- Department of Chemistry, University of Minnesota—Twin Cities, Minneapolis, Minnesota 55455, USA
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11
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Spector IC, Olson CM, Huber CJ, Massari AM. Simple fully reflective method of scatter reduction in 2D-IR spectroscopy. OPTICS LETTERS 2015; 40:1850-1852. [PMID: 25872090 DOI: 10.1364/ol.40.001850] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A fully reflective two-dimensional IR (2D-IR) setup is described that enables efficient cancellation of scattered light from multiple pulses in the phase-matched direction. The local oscillator pulse and the pulse that stimulates the vibrational echo signal are synchronously modulated (or fibrillated) in time maintaining their phase relationships with the echo wavepacket. The modification is cost-effective and can be easily implemented on existing 2D-IR instruments, and it avoids the addition of dispersive elements into the beam paths. The fibrillation results in a decrease of waiting-time resolution of only tens of femtoseconds and has no impact on the spectral lineshape, making it a general improvement for 2D-IR spectrometers even for weakly or non-scattering samples.
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12
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Rubtsova NI, Rubtsov IV. Vibrational energy transport in molecules studied by relaxation-assisted two-dimensional infrared spectroscopy. Annu Rev Phys Chem 2015; 66:717-38. [PMID: 25747112 DOI: 10.1146/annurev-physchem-040214-121337] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This review presents an overview of the relaxation-assisted two-dimensional infrared (RA 2DIR) spectroscopy method for measuring structures and energy transport dynamics in molecules. The method strongly enhances the range of accessible distances compared to traditional 2DIR and offers new structural reporters, such as the energy transport time, cross-peak amplification factors, and connectivity patterns. The use of the method for assigning vibrational modes with various levels of delocalization is illustrated. RA 2DIR relies on vibrational energy transport in molecules; as such, the transport mechanism can be conveniently studied by the method. Applications to identify diffusive and ballistic energy transport are demonstrated.
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Affiliation(s)
- Natalia I Rubtsova
- Department of Chemistry, Tulane University, New Orleans, Louisiana 70118;
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13
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Caplins BW, Lomont JP, Nguyen SC, Harris CB. Vibrational Cooling Dynamics of a [FeFe]-Hydrogenase Mimic Probed by Time-Resolved Infrared Spectroscopy. J Phys Chem A 2014; 118:11529-40. [DOI: 10.1021/jp510517z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Benjamin W. Caplins
- Department
of Chemistry, University of California at Berkeley, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Justin P. Lomont
- Department
of Chemistry, University of California at Berkeley, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Son C. Nguyen
- Department
of Chemistry, University of California at Berkeley, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Charles B. Harris
- Department
of Chemistry, University of California at Berkeley, Berkeley, California 94720, United States
- Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
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14
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Peran I, Oudenhoven T, Woys AM, Watson M, Zhang TO, Carrico I, Zanni MT, Raleigh DP. General strategy for the bioorthogonal incorporation of strongly absorbing, solvation-sensitive infrared probes into proteins. J Phys Chem B 2014; 118:7946-53. [PMID: 24749542 PMCID: PMC4317048 DOI: 10.1021/jp5008279] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 04/19/2014] [Indexed: 11/28/2022]
Abstract
A high-sensitivity metal-carbonyl-based IR probe is described that can be incorporated into proteins or other biomolecules in very high yield via Click chemistry. A two-step strategy is demonstrated. First, a methionine auxotroph is used to incorporate the unnatural amino acid azidohomoalanine at high levels. Second, a tricarbonyl (η(5)-cyclopentadienyl) rhenium(I) probe modified with an alkynyl linkage is coupled via the Click reaction. We demonstrate these steps using the C-terminal domain of the ribosomal protein L9 as a model system. An overall incorporation level of 92% was obtained at residue 109, which is a surface-exposed residue. Incorporation of the probe into a surface site is shown not to perturb the stability or structure of the target protein. Metal carbonyls are known to be sensitive to solvation and protein electrostatics through vibrational lifetimes and frequency shifts. We report that the frequencies and lifetimes of this probe also depend on the isotopic composition of the solvent. Comparison of the lifetimes measured in H2O versus D2O provides a probe of solvent accessibility. The metal carbonyl probe reported here provides an easy and robust method to label very large proteins with an amino-acid-specific tag that is both environmentally sensitive and a very strong absorber.
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Affiliation(s)
- Ivan Peran
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Tracey Oudenhoven
- Department
of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706-1396, United States
| | - Ann Marie Woys
- Department
of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706-1396, United States
| | - Matthew
D. Watson
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Tianqi O. Zhang
- Department
of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706-1396, United States
| | - Isaac Carrico
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
| | - Martin T. Zanni
- Department
of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706-1396, United States
| | - Daniel P. Raleigh
- Department
of Chemistry, Stony Brook University, Stony Brook, New York 11794-3400, United States
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