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Haidar Y, Konermann L. Effects of Hydrogen/Deuterium Exchange on Protein Stability in Solution and in the Gas Phase. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2023. [PMID: 37314114 DOI: 10.1021/jasms.3c00130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Mass spectrometry (MS)-based techniques are widely used for probing protein structure and dynamics in solution. H/D exchange (HDX)-MS is one of the most common approaches in this context. HDX is often considered to be a "benign" labeling method, in that it does not perturb protein behavior in solution. However, several studies have reported that D2O pushes unfolding equilibria toward the native state. The origin, and even the existence of this protein stabilization remain controversial. Here we conducted thermal unfolding assays in solution to confirm that deuterated proteins in D2O are more stable, with 2-4 K higher melting temperatures than unlabeled proteins in H2O. Previous studies tentatively attributed this phenomenon to strengthened H-bonds after deuteration, an effect that may arise from the lower zero-point vibrational energy of the deuterated species. Specifically, it was proposed that strengthened water-water bonds (W···W) in D2O lower the solubility of nonpolar side chains. The current work takes a broader view by noting that protein stability in solution also depends on water-protein (W···P) and protein-protein (P···P) H-bonds. To help unravel these contributions, we performed collision-induced unfolding (CIU) experiments on gaseous proteins generated by native electrospray ionization. CIU profiles of deuterated and unlabeled proteins were indistinguishable, implying that P···P contacts are insensitive to deuteration. Thus, protein stabilization in D2O is attributable to solvent effects, rather than alterations of intraprotein H-bonds. Strengthening of W···W contacts represents one possible explanation, but the stabilizing effect of D2O can also originate from weakened W···P bonds. Future work will be required to elucidate which of these two scenarios is correct, or if both contribute to protein stabilization in D2O. In any case, the often-repeated adage that "D-bonds are more stable than H-bonds" does not apply to intramolecular contacts in native proteins.
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Affiliation(s)
- Yousef Haidar
- Department of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada
| | - Lars Konermann
- Department of Chemistry, The University of Western Ontario, London, Ontario N6A 5B7, Canada
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2
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Milovanović MR, Stanković IM, Živković JM, Ninković DB, Hall MB, Zarić SD. Water: new aspect of hydrogen bonding in the solid state. IUCRJ 2022; 9:639-647. [PMID: 36071797 PMCID: PMC9438494 DOI: 10.1107/s2052252522006728] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 06/29/2022] [Indexed: 06/15/2023]
Abstract
All water-water contacts in the crystal structures from the Cambridge Structural Database with d OO ≤ 4.0 Å have been found. These contacts were analysed on the basis of their geometries and interaction energies from CCSD(T)/CBS calculations. The results show 6729 attractive water-water contacts, of which 4717 are classical hydrogen bonds (d OH ≤ 3.0 Å and α ≥ 120°) with most being stronger than -3.3 kcal mol-1. Beyond the region of these hydrogen bonds, there is a large number of attractive interactions (2062). The majority are antiparallel dipolar interactions, where the O-H bonds of two water molecules lying in parallel planes are oriented antiparallel to each other. Developing geometric criteria for these antiparallel dipoles (β1, β2 ≥ 160°, 80 ≤ α ≤ 140° and T HOHO > 40°) yielded 1282 attractive contacts. The interaction energies of these antiparallel oriented water molecules are up to -4.7 kcal mol-1, while most of the contacts have interaction energies in the range -0.9 to -2.1 kcal mol-1. This study suggests that the geometric criteria for defining attractive water-water interactions should be broader than the classical hydrogen-bonding criteria, a change that may reveal undiscovered and unappreciated interactions controlling molecular structure and chemistry.
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Affiliation(s)
- Milan R. Milovanović
- Innovation Center of the Faculty of Chemistry, Studentski trg 12-16, Belgrade 11000, Serbia
| | - Ivana M. Stanković
- Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, Belgrade, 11000 Serbia
| | - Jelena M. Živković
- Innovation Center of the Faculty of Chemistry, Studentski trg 12-16, Belgrade 11000, Serbia
| | - Dragan B. Ninković
- Innovation Center of the Faculty of Chemistry, Studentski trg 12-16, Belgrade 11000, Serbia
| | - Michael B. Hall
- Department of Chemistry, Texas A&M University, College Station, TX 77843-3255, USA
| | - Snežana D. Zarić
- Faculty of Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade 11000, Serbia
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Arumughan V, Nypelö T, Hasani M, Larsson A. Calcium Ion-Induced Structural Changes in Carboxymethylcellulose Solutions and Their Effects on Adsorption on Cellulose Surfaces. Biomacromolecules 2021; 23:47-56. [PMID: 34936336 PMCID: PMC8753602 DOI: 10.1021/acs.biomac.1c00895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
![]()
The adsorption of
carboxymethylcellulose (CMC) on cellulose surfaces
is one of the most studied examples of the adsorption of an anionic
polyelectrolyte on a like-charged surface. It has been suggested that
divalent ions can act as a bridge between CMC chains and the surface
of cellulose and enhance the CMC adsorption: they can, however, also
alter the structure of CMCs in the solution. In previous investigations,
the influence of cations on solution properties has been largely overlooked.
This study investigates the effect of Ca2+ ions on the
properties of CMC solutions as well as the influence on cellulose
nanofibers (CNFs), which was studied by dynamic light scattering and
correlated with the adsorption of CMC on a cellulose surface probed
using QCM-D. The presence of Ca2+ facilitated the multichain
association of CMC chains and increased the hydrodynamic diameter.
This suggests that the adsorption of CMCs at high concentrations of
CaCl2 is governed mainly by changes in solution properties
rather than by changes in the cellulose surface. Furthermore, an entropy-driven
mechanism has been suggested for the adsorption of CMC on cellulose.
By comparing the adsorption of CMC from H2O and D2O, it was found that the release of water from the cellulose surface
is driving the adsorption of CMC.
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Affiliation(s)
- Vishnu Arumughan
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.,AvanCell, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Tiina Nypelö
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.,Wallenberg Wood Science Center, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Merima Hasani
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.,AvanCell, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.,Wallenberg Wood Science Center, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Anette Larsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.,AvanCell, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.,Wallenberg Wood Science Center, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden.,FibRe─Centre for Lignocellulose-based Thermoplastics, Department of Chemistry and Chemical Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
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4
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Punyain W, Takahashi K. Evaluation of Ar tagging toward the vibrational spectra and zero point energy of X -HOH, X -DOH, and X -HOD, for X = F, Cl, Br. Phys Chem Chem Phys 2021; 23:9492-9499. [PMID: 33885081 DOI: 10.1039/d0cp06339h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we theoretically evaluated the effect of argon tagging toward the binding energy and vibrational spectra of water halide anion complexes Ar.X-HOH, Ar.X-HOD, and Ar.X-DOH (X = F, Cl, Br). The ionic hydrogen bond (IHB) OH stretching mode was calculated to have a strong peak in the vibrational spectra, and coupling to intermolecular modes as well as bending modes was observed as combination bands and Fermi resonances. We found that the argon tagging affected the IHB OH stretching peak position in Ar.F-H2O, but not in Ar.Cl-H2O and Ar.Br-H2O. Furthermore, D-binding is favored for Cl and Br based on zero point energies, but for F our calculated zero point energies did not show a preference between H- and D-binding. We show that the competition of the energy lowering in the zero point energy of the anharmonic IHB OH (OD) stretching mode versus the intermolecular out-of-plane IHB OH (OD) wagging mode is important for determining the preference between H- and D-binding for these monohydrated halide clusters. We also found that for X-HOD the HOD bending fundamental peak is blue shifted compared to bare HOD, but is redshifted for F-DOH.
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Affiliation(s)
- Wikorn Punyain
- Institute of Atomic and Molecular Sciences, Academia Sinica, PO Box 23-166, Taipei 10617, Taiwan.
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Kjaersgaard A, Vogt E, Christensen NF, Kjaergaard HG. Attenuated Deuterium Stabilization of Hydrogen-Bound Complexes at Room Temperature. J Phys Chem A 2020; 124:1763-1774. [DOI: 10.1021/acs.jpca.9b11762] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alexander Kjaersgaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Emil Vogt
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Nanna Falk Christensen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Henrik G. Kjaergaard
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
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Andersen J, Larsen RW, Ceponkus J, Uvdal P, Nelander B. Far-Infrared Investigation of the Benzene–Water Complex: The Identification of Large-Amplitude Motion and Tunneling Pathways. J Phys Chem A 2019; 124:513-519. [DOI: 10.1021/acs.jpca.9b01497] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J. Andersen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, 2800 Kgs. Lyngby, Denmark
| | - R. Wugt Larsen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, 2800 Kgs. Lyngby, Denmark
| | - J. Ceponkus
- Department of General Physics and Spectroscopy, Vilnius University, Sauletekio 9, LT-10007 Vilnius, Lithuania
| | - P. Uvdal
- Chemical Physics, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
| | - B. Nelander
- Chemical Physics, Department of Chemistry, Lund University, P.O. Box 124, SE-22100 Lund, Sweden
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7
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Lacroix MR, Liu Y, Strauss SH. Room-Temperature FTIR Spectra of the Cyclic S4 (H 2O) 4 Cluster in Crystalline Li 2(H 2O) 4(B 12F 12): Observation of B and E ν(OH) Bands and Coupling of Strong O–H···O and Weak O–H···F Vibrations. J Phys Chem A 2019; 123:9781-9790. [DOI: 10.1021/acs.jpca.9b07628] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthew R. Lacroix
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Yong Liu
- Department of Chemistry, University of Colorado at Denver, Denver, Colorado 80217, United States
| | - Steven H. Strauss
- Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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8
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Lacroix MR, Liu Y, Strauss SH. Hydrated Metal Ion Salts of the Weakly Coordinating Fluoroanions PF 6-, TiF 62-, B 12F 122-, Ga(C 2F 5) 4-, B(3,5-C 6H 3(CF 3) 2) 4-, and Al(OC(CF 3) 3) 4-. In Search of the Weakest HOH···F Hydrogen Bonds. Inorg Chem 2019; 58:14900-14911. [PMID: 31617354 DOI: 10.1021/acs.inorgchem.9b02646] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
FTIR spectra of microcrystalline samples of 11 metal ion salt hydrates of a variety of weakly coordinating fluoroanions are reported. The compounds studied were Li(H2O)4(Al(OC(CF3)3)4), Li(H2O)(B(3,5-C6H3(CF3)2)4), Li(H2O)n(Ga(C2F5)4), Li(H2O)(PF6), Li2(H2O)2(TiF6), Li2(H2O)4(B12F12), Na(H2O)(PF6), Na2(H2O)2(B12F12), K2(H2O)2(B12F12), Rb2(H2O)2(B12F12), Cs2(H2O)(B12F12), and their partially or completely deuterated isotopologs and isotopomers. The O-D···F hydrogen bonds in Li(HOD)(H2O)3(Al(OC(CF3)3)4) (ν(OD) = 2706 cm-1), Li(HOD)(B(3,5-C6H3(CF3)2)4) (ν(OD) = 2705 cm-1), and Li(HOD)(H2O)n(Ga(C2F5)4) (ν(OD) = 2697 cm-1) rival HOD absorbed in polyvinylidene difluoride (ν(OD) = 2696 cm-1) and HOD···FCH3 in a frozen Ar matrix (ν(OD) = 2685 cm-1) for the weakest hydrogen bonds between a water molecule and an F atom in any compound. As weak as they are, minor differences in O-H···F hydrogen bonds in the same fluoroanion salt can be distinguished spectroscopically. Uncoupled HOD molecules in asymmetric F···HOD···F' hydrogen bonding environments in Rb+, Cs+, Mg2+, and Co2+ hydrates of B12F122- gave rise to two observable ν(OD) bands even though the two R(O···F) distances differ by only 0.010(4) Å (Mg2+), 0.033(2) Å (Co2+), 0.074(4) Å (Rb+), and 0.106(6) Å (Cs+). A plot of ν(OD) for hydrates with a single uncoupled HOD molecule per metal ion (e.g., Li(HOD)(H2O)3(Al(OC(CF3)3)4)) vs R(O···F) distance from single-crystal X-ray or neutron diffraction structures was prepared. The ν(OD) values range from 2305 to 2706 cm-1 and the R(O···F) distances range from 2.58 to 3.17 Å. The plot consists of 53 {ν(OD), R(O···F)} data points, 23 of which are new and have ν(OD) > 2600 cm-1, in contrast to a 1994 ν(OD) vs R(O···F) plot with 28 data points, none of which had ν(OD) > 2600 cm-1. There is a clear and significant difference between the new ν(OD) vs R(O···F) plot and a literature ν(OD) vs R(O···O) plot for hydrates containing O-D···O hydrogen bonds. For a given ν(OD) stretching frequency, the exponential regression curves show that R(O···F) is typically 0.1-0.2 Å shorter than R(O···O), in harmony with the lower basicity and smaller size of F atoms vs O atoms.
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Affiliation(s)
- Matthew R Lacroix
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
| | - Yong Liu
- Department of Chemistry , University of Colorado at Denver , Denver , Colorado 80217 , United States
| | - Steven H Strauss
- Department of Chemistry , Colorado State University , Fort Collins , Colorado 80523 , United States
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9
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10
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Monteiro JG, Barbosa AG. VSCF calculations for the intra- and intermolecular vibrational modes of the water dimer and its isotopologs. Chem Phys 2016. [DOI: 10.1016/j.chemphys.2016.09.027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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11
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Glycine elicited self-assembly of amphiphilic star block copolymers with contradistinct hydrophobicities. Colloids Surf A Physicochem Eng Asp 2016. [DOI: 10.1016/j.colsurfa.2016.06.038] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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12
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Norman AI, Ivkov R, Forbes JG, Greer SC. Erratum: "The polymerization of actin: Structural changes from small-angle neutron scattering" [J. Chem. Phys. 123, 154904 (2005)]. J Chem Phys 2016; 144:229902. [PMID: 27306026 PMCID: PMC5848697 DOI: 10.1063/1.4953362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 05/24/2016] [Indexed: 11/14/2022] Open
Affiliation(s)
- Alexander I Norman
- Department of Chemistry and Biochemistry and Department of Chemical and Biomolecular Engineering,The University of Maryland College Park, College Park, Maryland 20742, USA
| | - Robert Ivkov
- Triton BioSystems, Inc., Chelmsford, Massachusetts 01824, USA
| | - Jeffrey G Forbes
- Proteomics and Nanotechnology Section, Laboratory of Muscle Biology, National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Building 50, Bethesda, Maryland 20892, USA
| | - Sandra C Greer
- Department of Chemistry and Biochemistry and Department of Chemical and Biomolecular Engineering,The University of Maryland College Park, College Park, Maryland 20742, USA
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13
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Andersen J, Heimdal J, Wugt Larsen R. The influence of large-amplitude librational motion on the hydrogen bond energy for alcohol–water complexes. Phys Chem Chem Phys 2015; 17:23761-9. [DOI: 10.1039/c5cp04321b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The intermolecular large-amplitude OH librational modes for mixed hydrogen-bonded complexes of water with methanol and t-butanol are unambiguously assigned for the first time.
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Affiliation(s)
- J. Andersen
- Department of Chemistry
- Technical University of Denmark
- 2800 Kgs. Lyngby
- Denmark
| | - J. Heimdal
- MAX-IV Laboratory
- Lund University
- 22100 Lund
- Sweden
| | - R. Wugt Larsen
- Department of Chemistry
- Technical University of Denmark
- 2800 Kgs. Lyngby
- Denmark
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14
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Kollipost F, Andersen J, Mahler DW, Heimdal J, Heger M, Suhm MA, Wugt Larsen R. The effect of hydrogen bonding on torsional dynamics: A combined far-infrared jet and matrix isolation study of methanol dimer. J Chem Phys 2014; 141:174314. [DOI: 10.1063/1.4900922] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- F. Kollipost
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, D-37077 Göttingen, Germany
| | - J. Andersen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, DK-2800 Kgs. Lyngby, Denmark
| | - D. W. Mahler
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, DK-2800 Kgs. Lyngby, Denmark
| | - J. Heimdal
- MAX-IV Laboratory, Lund University, P. O. Box 118, SE-22100 Lund, Sweden
| | - M. Heger
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, D-37077 Göttingen, Germany
| | - M. A. Suhm
- Institut für Physikalische Chemie, Universität Göttingen, Tammannstr. 6, D-37077 Göttingen, Germany
| | - R. Wugt Larsen
- Department of Chemistry, Technical University of Denmark, Kemitorvet 206, DK-2800 Kgs. Lyngby, Denmark
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15
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Liehn C, Bouvet M, Meunier-Prest R. Proton Transfer versus Hydrogen Bonding: The Reduction of Ubiquinone Q 2Incorporated in a Self-Assembled Monolayer in Unbuffered Aqueous Solution. ChemElectroChem 2014. [DOI: 10.1002/celc.201402191] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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16
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Self-assembly of the triblock copolymer 17R4 poly(propylene oxide)₁₄-poly(ethylene oxide)₂₄-poly(propylene oxide)₁₄ in D₂O. J Colloid Interface Sci 2014; 434:201-7. [PMID: 25203912 DOI: 10.1016/j.jcis.2014.07.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 07/26/2014] [Accepted: 07/29/2014] [Indexed: 11/21/2022]
Abstract
Our recent investigation of the three regions of the phase diagram of 17R4 in D2O (Huff et al., 2011) has led us to study the copolymer structure in this system by small-angle neutron scattering, rheometry, and dynamic light scattering. In region I at low temperatures and copolymer concentrations (0-30°C, 0.1-0.2 mass fraction ω), the cloudy solution contains the copolymer in large clusters made of hydrophobic PPO-rich "knots" bridged by dissolved hydrophilic PEO chains. These clusters vanish in region I at the lower temperatures and concentrations (below 39°C and ω=0.01). In region I over long times (weeks) at 25°C, a white liquid/gel film forms at the air-D2O interface. In region II at temperatures above the micellization line (above about 35°C, at ω=0.22) the large clusters dissipate and unimers coexist with "flower micelles," where the PPO blocks are the centers of the micelles and the PEO blocks loop into the solvent. In region III at still higher temperatures (above about 40°C at ω=0.2), the solution separates into coexisting liquid phases, where the upper phase of higher copolymer concentration is in region II, and the lower phase is in region I. The concentrated upper phase may contain micelles so crowded as to form a network.
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18
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Kumi BC, Greer SC. Micelles of polybutadiene-b-poly(ethylene oxide) in deuterated methanol and deuterated cyclohexane. J Colloid Interface Sci 2012; 386:212-7. [PMID: 22921407 DOI: 10.1016/j.jcis.2012.06.091] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 06/26/2012] [Accepted: 06/27/2012] [Indexed: 11/30/2022]
Abstract
Micellization of the diblock copolymer poly(ethylene oxide)-b-polybutadiene, PEO(132)-PB(89), where the subscripts denote the number of monomers in each block, has been studied in solution in deuterated methanol and in deuterated cyclohexane, in order to compare the micellar assembly in deuterated solvents to that in protonated solvents. The methods used were dynamic light scattering and small angle neutron scattering. In CD(3)OD, PEO(132)-PB(89) forms only spherical micelles that change little in size or shape over the temperature range 21-68°C. In CH(3)OH, PEO(132)-PB(89) forms coexisting cylindrical and spherical structures over the entire temperature range. Thus cylindrical micelles form in CH(3)OH, but do not form in CD(3)OD. In C(6)D(12), the copolymer forms flexible, cylindrical micelles at lower temperatures; above about 40°C, spherical micelles and free copolymers appear and coexist with the cylindrical micelles. The behavior in C(6)H(12) is the same as in C(6)D(12), except that no free copolymers are observed in C(6)H(12). The stronger hydrogen bonding in deuterated methanol as compared to protonated methanol is assumed to be the source of the difference in assembly.
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Affiliation(s)
- Bryna C Kumi
- Department of Chemistry and Biochemistry, The University of Maryland College Park, College Park, MD 20742, United States.
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Ceponkus J, Uvdal P, Nelander B. Water Tetramer, Pentamer, and Hexamer in Inert Matrices. J Phys Chem A 2012; 116:4842-50. [DOI: 10.1021/jp301521b] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- J. Ceponkus
- MAX-IV Laboratory, Lund University, P.O.
Box 118, SE-22100 Lund, Sweden
| | - P. Uvdal
- MAX-IV Laboratory, Lund University, P.O.
Box 118, SE-22100 Lund, Sweden
- Chemical Physics, Department of
Chemistry, Lund University, P.O. Box 124,
SE-22100 Lund, Sweden
| | - B. Nelander
- MAX-IV Laboratory, Lund University, P.O.
Box 118, SE-22100 Lund, Sweden
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Ceponkus J, Uvdal P, Nelander B. Observations of Host Guest Interactions Specific to Molecular Matrices: Water Monomers and Dimers in Hydrogen Matrices. J Phys Chem A 2011; 115:7921-7. [DOI: 10.1021/jp201751r] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- J. Ceponkus
- MAX-lab, P. O. Box 118, and ‡Chemical Physics, Department of Chemistry, P. O. Box 124, Lund University, SE-22100 Lund, Sweden
| | - P. Uvdal
- MAX-lab, P. O. Box 118, and ‡Chemical Physics, Department of Chemistry, P. O. Box 124, Lund University, SE-22100 Lund, Sweden
| | - B. Nelander
- MAX-lab, P. O. Box 118, and ‡Chemical Physics, Department of Chemistry, P. O. Box 124, Lund University, SE-22100 Lund, Sweden
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21
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Huff A, Patton K, Odhner H, Jacobs DT, Clover BC, Greer SC. Micellization and phase separation for triblock copolymer 17R4 in H2O and in D2O. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:1707-1712. [PMID: 21244076 DOI: 10.1021/la104350g] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The reverse Pluronic triblock copolymer 17R4 is formed from poly(propylene oxide) (PPO) and poly(ethylene oxide) (PEO): PPO(14)-PEO(24)-PPO(14), where the subscripts denote the number of monomers in each block. In water, 17R4 shows both a transition to aggregated micellar species at lower temperatures and a separation into copolymer-rich and copolymer-poor liquid phases at higher temperatures. For 17R4 in H(2)O and in D(2)O, we have determined (1) the phase boundaries corresponding to the micellization line, (2) the cloud point curves marking the onset of phase separation at various compositions, and (3) the coexistence curves for the phase separation (the compositions of coexisting phases). In both H(2)O and in D(2)O, 17R4 exhibits coexistence curves with lower consolute temperatures and compositions that differ from the minima in the cloud point curves; we take this as an indication of the polydispersity of the micellar species. The coexistence curves for compositions near the critical composition are described well by an Ising model. For 17R4 in both H(2)O and D(2)O, the critical composition is 0.22 ± 0.01 in volume fraction. The critical temperatures differ: 44.8 °C in H(2)O and 43.6 °C in D(2)O. The cloud point curve for the 17R4/D(2)O is as much as 9 °C lower than in H(2)O.
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Affiliation(s)
- Alison Huff
- Department of Physics, The College of Wooster, Wooster, Ohio 44691, United States
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Steponavičius R, Thennadil SN. Extraction of Chemical Information of Suspensions Using Radiative Transfer Theory To Remove Multiple Scattering Effects: Application to a Model Multicomponent System. Anal Chem 2011; 83:1931-7. [DOI: 10.1021/ac1024073] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Raimundas Steponavičius
- School of Chemical Engineering and Advanced Materials, Newcastle University, Merz Court, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Suresh N. Thennadil
- Department of Chemical and Process Engineering, University of Strathclyde, James Weir Building, 75 Montrose Street, Glasgow G1 1XJ, United Kingdom
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Ceponkus J, Uvdal P, Nelander B. On the structure of the matrix isolated water trimer. J Chem Phys 2011; 134:064309. [DOI: 10.1063/1.3551622] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
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24
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Ceponkus J, Uvdal P, Nelander B. Acceptor switching and axial rotation of the water dimer in matrices, observed by infrared spectroscopy. J Chem Phys 2010; 133:074301. [DOI: 10.1063/1.3460457] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Vu TH, Dai Kälin S, Shultz MJ. Spectroscopic Identification of Water−Propane Interaction: Implications for Clathrate Nucleation. J Phys Chem A 2010; 114:6356-60. [DOI: 10.1021/jp101678z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Tuan Hoang Vu
- Pearson Research Laboratory, Department of Chemistry, Tufts University, Medford, Massachusetts 02155, and AmniSure International LLC, 30 JFK Street, Cambridge, Massachusetts 02138
| | - Sarah Dai Kälin
- Pearson Research Laboratory, Department of Chemistry, Tufts University, Medford, Massachusetts 02155, and AmniSure International LLC, 30 JFK Street, Cambridge, Massachusetts 02138
| | - Mary Jane Shultz
- Pearson Research Laboratory, Department of Chemistry, Tufts University, Medford, Massachusetts 02155, and AmniSure International LLC, 30 JFK Street, Cambridge, Massachusetts 02138
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26
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O'Leary DJ, Hickstein DD, Hansen BKV, Hansen PE. Theoretical and NMR Studies of Deuterium Isotopic Perturbation of Hydrogen Bonding in Symmetrical Dihydroxy Compounds. J Org Chem 2009; 75:1331-42. [DOI: 10.1021/jo902075z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Daniel J. O'Leary
- Department of Chemistry, Bowdoin College, 6600 College Station, Brunswick, Maine 04011
- Department of Chemistry, Pomona College, 645 North College Avenue, Claremont, California 91711
| | - Daniel D. Hickstein
- Department of Chemistry, Pomona College, 645 North College Avenue, Claremont, California 91711
| | - Bjarke K. V. Hansen
- Department of Science, Systems and Models, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
| | - Poul Erik Hansen
- Department of Science, Systems and Models, Roskilde University, P.O. Box 260, DK-4000 Roskilde, Denmark
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27
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Ceponkus J, Uvdal P, Nelander B. Intermolecular vibrations of different isotopologs of the water dimer: Experiments and density functional theory calculations. J Chem Phys 2008; 129:194306. [DOI: 10.1063/1.3009620] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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28
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McCunn LR, Roscioli JR, Elliott BM, Johnson MA, McCoy AB. Why Does Argon Bind to Deuterium? Isotope Effects and Structures of Ar·H 5O 2 + Complexes. J Phys Chem A 2008; 112:6074-8. [DOI: 10.1021/jp802172q] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Laura R. McCunn
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, and Department of Chemistry, The Ohio State University, Columbus, Ohio 43210
| | - Joseph R. Roscioli
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, and Department of Chemistry, The Ohio State University, Columbus, Ohio 43210
| | - Ben M. Elliott
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, and Department of Chemistry, The Ohio State University, Columbus, Ohio 43210
| | - Mark A. Johnson
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, and Department of Chemistry, The Ohio State University, Columbus, Ohio 43210
| | - Anne B. McCoy
- Department of Chemistry, Yale University, New Haven, Connecticut 06520, and Department of Chemistry, The Ohio State University, Columbus, Ohio 43210
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29
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Observation of nuclear spin species conversion inside the 1593cm−1 structure of H2O trapped in argon matrices: Nitrogen impurities and the H2O:N2 complex. J Mol Struct 2008. [DOI: 10.1016/j.molstruc.2007.03.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Buch V, Tarbuck T, Richmond GL, Groenzin H, Li I, Shultz MJ. Sum frequency generation surface spectra of ice, water, and acid solution investigated by an exciton model. J Chem Phys 2007; 127:204710. [DOI: 10.1063/1.2790437] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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31
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Norman AI, Ivkov R, Forbes JG, Greer SC. The polymerization of actin: structural changes from small-angle neutron scattering. J Chem Phys 2007; 123:154904. [PMID: 16252969 DOI: 10.1063/1.2039088] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present a new analysis of small-angle neutron-scattering data from rabbit muscle actin in the course of the polymerization from G-actin to F-actin as a function of temperature. The data, from Ivkov et al. [J. Chem. Phys. 108, 5599 (1998)], were taken in D2O buffer with Ca2+ as the divalent cation on the G-actin in the presence of ATP and with KCl as the initiating salt. The new analysis of the data using modeling and the method of generalized indirect fourier transform (O. Glatter, GIFT, University of Graz, Austria, http://physchem.kfunigraz.ac.at/sm/) provide shapes and dimensions of the G-actin monomer and of the growing actin oligomer in solution as a function of temperature and salt concentration. This analysis indicates that the G-actin monomer, under the conditions given above, is a sphere 50-54 A in diameter as opposed to the oblate ellipsoid seen by x-ray crystallography. The F-actin dimensions are consistent with x-ray crystal structure determinations.
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Affiliation(s)
- Alexander I Norman
- Department of Chemistry and Biochemistry, The University of Maryland College Park, College Park, Maryland 20742, USA.
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33
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Anick DJ. Proton and deuteron position preferences in water clusters: an ab initio study. J Chem Phys 2005; 123:244309. [PMID: 16396539 DOI: 10.1063/1.2139669] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
In order to explore the effect of H-to-D substitution on the zero-point energy (ZPE) of water clusters, Hessians were computed for a database of 53 optimized (H2O)n clusters, 5 < or = n < or = 21, at the B3LYP6-311 + + G** level. The 53 clusters contained 1524 protons, which were sorted into 18 categories according to the type of their donor O and (if not free) acceptor O. Letting deltaZPE[H]* denote the change in ZPE when the proton H* is replaced by D, mean values for deltaZPE[H*] for the H-bonded categories ranged from -2172 cal mol(-1) for H* in a DDAA-DDAA bond to -2118 for H* in a DAA-DDA bond. Mean value for H* free on DAA (respectively, DA) was -2018 (respectively, -1969). For DAA-DDA bonds, and for short H bonds in general, there was a strong inverse correlation between /deltaZPE[H*]/ and the O-H* distance. deltaZPE for multiple H-to-D substitutions was additive, except for a cooperativity effect of -13.7 to -19.7 cal mol(-1) when two substituted protons were in the same H2O unit and a much smaller cooperativity when one proton's donor was the other's acceptor. Implications of these data include a relative preference for D to occupy H bonded rather than free positions in finite water clusters, a value of 3.82 for the disproportionation equilibrium constant of mixed ice at 150 K, increased occupation by H at surface positions of mixed ice, and a larger average coordination number for liquid D2O than for liquid H2O.
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Affiliation(s)
- David J Anick
- Harvard Medical School, Harvard University, McLean Hospital, Belmont, Massachusetts 02478, USA.
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35
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Schriver A, Schriver-Mazzuoli L, Chaquin P, Dumont E. FTIR and ab Initio Study of the 1/1 Complex between Water and Carbon Dioxide in Solid Nitrogen. J Phys Chem A 2005; 110:51-6. [PMID: 16392839 DOI: 10.1021/jp0581328] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Infrared spectra of the 1/1 complex between water and carbon dioxide isolated in a nitrogen matrix are reported. Isotopic substitution of water (HOD, D2O) suggests the existence of two very weak complexes with a nearly T-shaped structure where the C atom is bonded to the water oxygen: one of C2v symmetry and another one of Cs symmetry, in which a slight distortion results in a very weak interaction between one hydrogen atom of water and one oxygen atom of carbon dioxide. This result is supported by force constant calculations, consistent with a double, symmetrical, and unsymmetrical force field, and ab initio calculations. At the MP2/aug-cc-PVTZ level corrected from basis set superposition error the C2v structure is a saddle point with an imaginary frequency for H2O rocking, in contrast to a Cs structure, which would have nonequivalent hydrogen atoms. Nevertheless, the energies of both structures, with a stabilization energy of 1.97 kcal mol-1, differ by less than 0.01 kcal mol-1 from each other. A comparison of calculated and observed frequency shifts allows us to suggest the presence in the matrix of both C2v and Cs complexes.
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Affiliation(s)
- A Schriver
- Université Pierre et Marie Curie, case 22, 4 place Jussieu, 75252 Paris Cedex 05, France
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36
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Kim Y, Kim Y. Dynamics of the Concerted Triple Proton Transfer in Cyclic Water Trimer Using the Multiconfiguration Molecular Mechanics Algorithm. J Phys Chem A 2005; 110:600-8. [PMID: 16405332 DOI: 10.1021/jp0530193] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Cyclic water clusters are important molecular species to understand the nature of hydrogen bonded networks. Theoretical studies for the dynamics of triple proton transfer in the cyclic water trimer were performed. The potential energy surface (PES) of triple proton transfer is generated by the multiconfiguration molecular mechanics (MCMM) algorithm. We have used the MP2/6-31G(d,p) level for high-level ab initio data (energies, gradients, and Hessians), which are used in the Shepard interpolation. Eight high-level reference points were added step by step, including two points for the critical configurations of the large curvature tunneling paths. The more high-level points are used, the better the potential energy surfaces become. The rate constant and kinetic isotope effect (KIE) for the triple proton transfer at 300 K, which have been calculated by the canonical variational transition-state theory with microcanonical optimized multidimensional semiclassical tunneling approximation, are 1.6 x 10(-3) s(-1) and 230, respectively. Tunneling is very important not only for the triple proton transfer but also for the triple deuterium transfer. The MCMM results show good agreement with those from the direct ab initio dynamics calculations.
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Affiliation(s)
- Yangsoo Kim
- Department of Chemistry, Kyung Hee University, Yong-In City, Kyunggi-Do, 449-701, Korea
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37
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Norman AI, Ho DL, Karim A, Amis EJ. Phase behavior of block co-poly(ethylene oxide–butylene oxide), E18B9 in water, by small angle neutron scattering. J Colloid Interface Sci 2005; 288:155-65. [PMID: 15927574 DOI: 10.1016/j.jcis.2005.02.091] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2004] [Revised: 02/21/2005] [Accepted: 02/23/2005] [Indexed: 11/21/2022]
Abstract
We present a small angle neutron scattering (SANS) study into the micellar structures of diblock copolymer E18B9 (where E denotes a ethylene oxide unit and B denotes a butylene oxide unit, 18 and 9 being the number of repeat units respectively) in aqueous solution over a range of five different concentrations (0.2, 1.0, 10.0, 20.0, and 40.0% (by mass fraction)) and eight temperatures (10 to 90 degrees C). The NG7 30 m SANS instrument provides a q range of 0.0009 to 0.5548 A(-1), thus probing the structure over a very broad length scale. At low temperature and low concentration, spherical micelles exist, elongating into worm-like structures at higher temperatures. This transition is observed by the scaling of the scattered intensity at low q and confirmed upon fitting to an appropriate model. Upon increasing concentration, the micelles pack into ordered arrays of either hexagonally packed rod-like micelles or lamellar sheets, again dependent on temperature. Both concentration and temperature effects of this block copolymer have been discussed.
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Affiliation(s)
- Alexander I Norman
- Polymers Division, Stop 8542, National Institute of Standards and Technology, 100 Bureau Drive, Gaithersburg, MD 20899-8542, USA.
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38
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Devlin J, Severson M, Mohamed F, Sadlej J, Buch V, Parrinello M. Experimental and computational study of isotopic effects within the Zundel ion. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.04.087] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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39
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Ohno K, Okimura M, Akai N, Katsumoto Y. The effect of cooperative hydrogen bonding on the OH stretching-band shift for water clusters studied by matrix-isolation infrared spectroscopy and density functional theory. Phys Chem Chem Phys 2005; 7:3005-14. [PMID: 16186903 DOI: 10.1039/b506641g] [Citation(s) in RCA: 159] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Infrared spectra of the water clusters have been measured in the N2 + O2 matrix. The aggregation process of water in the matrix has been monitored by annealing the deposited samples up to 40 K and UV irradiation. The monomer, dimer, cyclic trimer and cyclic pentamer are found as water clusters in the matrix. For the hexamer, several structures such as chair, cage, prism, bag 1 and/or book 1 are likely to exist. By UV irradiation, the cyclic pentamer is predominantly formed from the monomer and dimer. On the other hand, by annealing the deposited sample, several hexamers are formed. The theoretical calculation for water clusters has revealed that the formation of one hydrogen bonding in a hydrogen-bonded chain cooperatively enhances or diminishes the strength of another hydrogen bond. Both proton donor (D) and acceptor (A) participating in a hydrogen-bonding pair DA are capable of forming hydrogen bonding with the other water molecules; D can additionally accept two protons and donate one proton, and A can additionally donate two protons and accept one proton. We have proposed the classification of hydrogen-bonding patterns considering the cooperativity, denoting as d'a'DAd''a'', where d and a are integers indicating the number of proton donors and acceptors to D (the single prime) and A (the double prime), respectively. Then, a magnitude given by MOH = -d' + a' + d'' - a'' has been introduced, which is very useful for connecting the hydrogen-bonding patterns to their OH wavenumbers. As a result, it is revealed that the OH stretching bands of water clusters are characterized by eight indicators (free and MOH = -2, -1, 0, 1, 2, 3 and 4). The classification proposed here is applicable to the OH band analysis for the hydrogen-bonded water and alcohols in a condensed phase.
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Affiliation(s)
- Keiichi Ohno
- Department of Chemistry, Graduate School of Science, Hiroshima University, Kagamiyama, Higashi-Hiroshima, 739-8526, Japan.
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Affiliation(s)
- Justinas Ceponkus
- Chemical Physics, Chemical Center, University of Lund, P.O. Box 124, S-221 00 Lund, Sweden
| | - Bengt Nelander
- Chemical Physics, Chemical Center, University of Lund, P.O. Box 124, S-221 00 Lund, Sweden
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41
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Isotopic fractionation and zero-point effects in anionic H-bonded complexes: a comparison of the I−·HDO and F−·HDO ion–molecule clusters. Chem Phys Lett 2004. [DOI: 10.1016/j.cplett.2004.01.077] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Devlin JP, Sadlej J, Hollman M, Buch V. Solvation Stages of HCl and HBr in Crystalline Phases with Methanol and Small Ethers: Acid−Ether Cluster Complexes in Amorphous and Crystal Phases. J Phys Chem A 2004. [DOI: 10.1021/jp036909w] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- J. Paul Devlin
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw and National Institute of Public Health, 30/34 Chelmska Str., 00-725 Warsaw, Poland, The Fritz Haber Institute for Molecular Dynamics, Hebrew University, Jerusalem 1904, Israel, and Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078
| | - Joanna Sadlej
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw and National Institute of Public Health, 30/34 Chelmska Str., 00-725 Warsaw, Poland, The Fritz Haber Institute for Molecular Dynamics, Hebrew University, Jerusalem 1904, Israel, and Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078
| | - Maxwell Hollman
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw and National Institute of Public Health, 30/34 Chelmska Str., 00-725 Warsaw, Poland, The Fritz Haber Institute for Molecular Dynamics, Hebrew University, Jerusalem 1904, Israel, and Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078
| | - Victoria Buch
- Department of Chemistry, University of Warsaw, Pasteura 1, 02-093 Warsaw and National Institute of Public Health, 30/34 Chelmska Str., 00-725 Warsaw, Poland, The Fritz Haber Institute for Molecular Dynamics, Hebrew University, Jerusalem 1904, Israel, and Department of Chemistry, Oklahoma State University, Stillwater, Oklahoma 74078
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43
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Niranjan PS, Yim PB, Forbes JG, Greer SC, Dudowicz J, Freed KF, Douglas JF. The polymerization of actin: Thermodynamics near the polymerization line. J Chem Phys 2003. [DOI: 10.1063/1.1592499] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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44
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Wei D, Truchon JF, Sirois S, Salahub D. Solvation of formic acid and proton transfer in hydrated clusters. J Chem Phys 2002. [DOI: 10.1063/1.1458543] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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45
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Devlin JP. Structure, spectra, and mobility of low-pressure ices: Ice I, amorphous solid water, and clathrate hydrates atT< 150 K. ACTA ACUST UNITED AC 2001. [DOI: 10.1029/2000je001301] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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46
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Buck U, Huisken F. Infrared spectroscopy of size-selected water and methanol clusters. Chem Rev 2000; 100:3863-90. [PMID: 11749332 DOI: 10.1021/cr990054v] [Citation(s) in RCA: 484] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- U Buck
- Max-Planck-Institut für Strömungsforschung, Bunsenstrasse 10, D-37073 Göttingen, Germany
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Abstract
Various means of calculating the effect of changing the mass of a given atom upon a chemical process are reviewed. Of particular interest is the deuterium isotope effect comparing the normal protium nucleus with its heavier deuterium congener. The replacement of the bridging protium in a neutral hydrogen bond such as the water dimer by a deuterium strengthens the interaction by a small amount via effects upon the vibrational energy. In an ionic H-bond such as the protonated water dimer, on the other hand, the reverse trend is observed in that replacement of the bridging protium by dimer weakens the interaction. In addition to the stability of a given complex, the rate at which a proton transfers from one group to another is likewise affected by deuterium substitution, viz. kinetic isotope effects (KIEs). The KIE is enlarged as the temperature drops, particularly so if the calculation of KIE includes proton tunneling. The KIE is also sensitive to any angular distortions or stretches present in the H-bond of interest. KIEs can be computed either by the standard transition state theory which is derived via only two points on the potential energy surface, or by more complete formalisms which take account of larger swaths of the surface. While more time intensive, the latter can also be applied to provide insights important in interpretation of experimental data.
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Affiliation(s)
- S Scheiner
- Department of Chemistry, Southern Illinois University, Carbondale, IL, USA.
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48
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Devlin JP. Preferential deuterium bonding at the ice surface: A probe of surface water molecule mobility. J Chem Phys 2000. [DOI: 10.1063/1.481129] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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49
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Romero FM, Ziessel R, Bonnet M, Pontillon Y, Ressouche E, Schweizer J, Delley B, Grand A, Paulsen C. Evidence for Transmission of Ferromagnetic Interactions through Hydrogen Bonds in Alkyne-Substituted Nitroxide Radicals: Magnetostructural Correlations and Polarized Neutron Diffraction Studies. J Am Chem Soc 2000. [DOI: 10.1021/ja992673r] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Francisco M. Romero
- Contribution from the Laboratoire de Chimie, d'Electronique et de Photonique Moléculaires, associé au CNRS ESA-7008, Ecole Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel -BP 08- 67087 Strasbourg Cedex, France, Département de Recherche Fondamentale sur la Matière Condensée, DRFMC/SPSMS/MDN and DRFMC/SCIB, CEA-Grenoble, 17 rue des Martyrs 38054 Grenoble Cedex, France, Paul Scherer Institute Zürich, Badenerstrasse 569, 8048 Zürich, Switzerland, and Centre de Recherche sur les Très Basses Températures
| | - Raymond Ziessel
- Contribution from the Laboratoire de Chimie, d'Electronique et de Photonique Moléculaires, associé au CNRS ESA-7008, Ecole Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel -BP 08- 67087 Strasbourg Cedex, France, Département de Recherche Fondamentale sur la Matière Condensée, DRFMC/SPSMS/MDN and DRFMC/SCIB, CEA-Grenoble, 17 rue des Martyrs 38054 Grenoble Cedex, France, Paul Scherer Institute Zürich, Badenerstrasse 569, 8048 Zürich, Switzerland, and Centre de Recherche sur les Très Basses Températures
| | - Michel Bonnet
- Contribution from the Laboratoire de Chimie, d'Electronique et de Photonique Moléculaires, associé au CNRS ESA-7008, Ecole Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel -BP 08- 67087 Strasbourg Cedex, France, Département de Recherche Fondamentale sur la Matière Condensée, DRFMC/SPSMS/MDN and DRFMC/SCIB, CEA-Grenoble, 17 rue des Martyrs 38054 Grenoble Cedex, France, Paul Scherer Institute Zürich, Badenerstrasse 569, 8048 Zürich, Switzerland, and Centre de Recherche sur les Très Basses Températures
| | - Yves Pontillon
- Contribution from the Laboratoire de Chimie, d'Electronique et de Photonique Moléculaires, associé au CNRS ESA-7008, Ecole Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel -BP 08- 67087 Strasbourg Cedex, France, Département de Recherche Fondamentale sur la Matière Condensée, DRFMC/SPSMS/MDN and DRFMC/SCIB, CEA-Grenoble, 17 rue des Martyrs 38054 Grenoble Cedex, France, Paul Scherer Institute Zürich, Badenerstrasse 569, 8048 Zürich, Switzerland, and Centre de Recherche sur les Très Basses Températures
| | - Eric Ressouche
- Contribution from the Laboratoire de Chimie, d'Electronique et de Photonique Moléculaires, associé au CNRS ESA-7008, Ecole Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel -BP 08- 67087 Strasbourg Cedex, France, Département de Recherche Fondamentale sur la Matière Condensée, DRFMC/SPSMS/MDN and DRFMC/SCIB, CEA-Grenoble, 17 rue des Martyrs 38054 Grenoble Cedex, France, Paul Scherer Institute Zürich, Badenerstrasse 569, 8048 Zürich, Switzerland, and Centre de Recherche sur les Très Basses Températures
| | - Jacques Schweizer
- Contribution from the Laboratoire de Chimie, d'Electronique et de Photonique Moléculaires, associé au CNRS ESA-7008, Ecole Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel -BP 08- 67087 Strasbourg Cedex, France, Département de Recherche Fondamentale sur la Matière Condensée, DRFMC/SPSMS/MDN and DRFMC/SCIB, CEA-Grenoble, 17 rue des Martyrs 38054 Grenoble Cedex, France, Paul Scherer Institute Zürich, Badenerstrasse 569, 8048 Zürich, Switzerland, and Centre de Recherche sur les Très Basses Températures
| | - Bernard Delley
- Contribution from the Laboratoire de Chimie, d'Electronique et de Photonique Moléculaires, associé au CNRS ESA-7008, Ecole Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel -BP 08- 67087 Strasbourg Cedex, France, Département de Recherche Fondamentale sur la Matière Condensée, DRFMC/SPSMS/MDN and DRFMC/SCIB, CEA-Grenoble, 17 rue des Martyrs 38054 Grenoble Cedex, France, Paul Scherer Institute Zürich, Badenerstrasse 569, 8048 Zürich, Switzerland, and Centre de Recherche sur les Très Basses Températures
| | - André Grand
- Contribution from the Laboratoire de Chimie, d'Electronique et de Photonique Moléculaires, associé au CNRS ESA-7008, Ecole Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel -BP 08- 67087 Strasbourg Cedex, France, Département de Recherche Fondamentale sur la Matière Condensée, DRFMC/SPSMS/MDN and DRFMC/SCIB, CEA-Grenoble, 17 rue des Martyrs 38054 Grenoble Cedex, France, Paul Scherer Institute Zürich, Badenerstrasse 569, 8048 Zürich, Switzerland, and Centre de Recherche sur les Très Basses Températures
| | - Carley Paulsen
- Contribution from the Laboratoire de Chimie, d'Electronique et de Photonique Moléculaires, associé au CNRS ESA-7008, Ecole Chimie, Polymères, Matériaux (ECPM), 25 rue Becquerel -BP 08- 67087 Strasbourg Cedex, France, Département de Recherche Fondamentale sur la Matière Condensée, DRFMC/SPSMS/MDN and DRFMC/SCIB, CEA-Grenoble, 17 rue des Martyrs 38054 Grenoble Cedex, France, Paul Scherer Institute Zürich, Badenerstrasse 569, 8048 Zürich, Switzerland, and Centre de Recherche sur les Très Basses Températures
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Pehkonen S, Pettersson M, Lundell J, Khriachtchev L, Räsänen M. Photochemical Studies of Hydrogen Peroxide in Solid Rare Gases: Formation of the HOH···O(3P) Complex. J Phys Chem A 1998. [DOI: 10.1021/jp982111e] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Susanna Pehkonen
- Laboratory of Physical Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 University of Helsinki, Finland
| | - Mika Pettersson
- Laboratory of Physical Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 University of Helsinki, Finland
| | - Jan Lundell
- Laboratory of Physical Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 University of Helsinki, Finland
| | - Leonid Khriachtchev
- Laboratory of Physical Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 University of Helsinki, Finland
| | - Markku Räsänen
- Laboratory of Physical Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 University of Helsinki, Finland
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