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Sattor AK, Pervaje AK, Pasquinelli MA, Khan SA, Santiso EE. Multiscale Constitutive Modeling of the Mechanical Properties of Polypropylene Fibers from Molecular Simulation Data. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c00630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Amulya K. Sattor
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Amulya K. Pervaje
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Melissa A. Pasquinelli
- Fiber and Polymer Science Program, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Saad A. Khan
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
| | - Erik E. Santiso
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27606, United States
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Koehn JT, Beuning CN, Peters BJ, Dellinger SK, Van Cleave C, Crick DC, Crans DC. Investigating Substrate Analogues for Mycobacterial MenJ: Truncated and Partially Saturated Menaquinones. Biochemistry 2019; 58:1596-1615. [DOI: 10.1021/acs.biochem.9b00007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Koehn J, Magallanes ES, Peters BJ, Beuning CN, Haase AA, Zhu MJ, Rithner CD, Crick DC, Crans DC. A Synthetic Isoprenoid Lipoquinone, Menaquinone-2, Adopts a Folded Conformation in Solution and at a Model Membrane Interface. J Org Chem 2018; 83:275-288. [PMID: 29168636 PMCID: PMC5759649 DOI: 10.1021/acs.joc.7b02649] [Citation(s) in RCA: 16] [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: 10/18/2017] [Indexed: 11/29/2022]
Abstract
Menaquinones (naphthoquinones, MK) are isoprenoids that play key roles in the respiratory electron transport system of some prokaryotes by shuttling electrons between membrane-bound protein complexes acting as electron acceptors and donors. Menaquinone-2 (MK-2), a truncated MK, was synthesized, and the studies presented herein characterize the conformational and chemical properties of the hydrophobic MK-2 molecule. Using 2D NMR spectroscopy, we established for the first time that MK-2 has a folded conformation defined by the isoprenyl side-chain folding back over the napthoquinone in a U-shape, which depends on the specific environmental conditions found in different solvents. We used molecular mechanics to illustrate conformations found by the NMR experiments. The measured redox potentials of MK-2 differed in three organic solvents, where MK-2 was most easily reduced in DMSO, which may suggest a combination of solvent effect (presumably in part because of differences in dielectric constants) and/or conformational differences of MK-2 in different organic solvents. Furthermore, MK-2 was found to associate with the interface of model membranes represented by Langmuir phospholipid monolayers and Aerosol-OT (AOT) reverse micelles. MK-2 adopts a slightly different U-shaped conformation within reverse micelles compared to within solution, which is in sharp contrast to the extended conformations illustrated in literature for MKs.
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Affiliation(s)
- Jordan
T. Koehn
- Chemistry
Department, Cell and Molecular Biology Program,
and Microbiology, Immunology,
and Pathology Department, Colorado State
University, Fort Collins, Colorado 80523, United States
| | - Estela S. Magallanes
- Chemistry
Department, Cell and Molecular Biology Program,
and Microbiology, Immunology,
and Pathology Department, Colorado State
University, Fort Collins, Colorado 80523, United States
| | - Benjamin J. Peters
- Chemistry
Department, Cell and Molecular Biology Program,
and Microbiology, Immunology,
and Pathology Department, Colorado State
University, Fort Collins, Colorado 80523, United States
| | - Cheryle N. Beuning
- Chemistry
Department, Cell and Molecular Biology Program,
and Microbiology, Immunology,
and Pathology Department, Colorado State
University, Fort Collins, Colorado 80523, United States
| | - Allison A. Haase
- Chemistry
Department, Cell and Molecular Biology Program,
and Microbiology, Immunology,
and Pathology Department, Colorado State
University, Fort Collins, Colorado 80523, United States
| | - Michelle J. Zhu
- Chemistry
Department, Cell and Molecular Biology Program,
and Microbiology, Immunology,
and Pathology Department, Colorado State
University, Fort Collins, Colorado 80523, United States
| | - Christopher D. Rithner
- Chemistry
Department, Cell and Molecular Biology Program,
and Microbiology, Immunology,
and Pathology Department, Colorado State
University, Fort Collins, Colorado 80523, United States
| | - Dean C. Crick
- Chemistry
Department, Cell and Molecular Biology Program,
and Microbiology, Immunology,
and Pathology Department, Colorado State
University, Fort Collins, Colorado 80523, United States
| | - Debbie C. Crans
- Chemistry
Department, Cell and Molecular Biology Program,
and Microbiology, Immunology,
and Pathology Department, Colorado State
University, Fort Collins, Colorado 80523, United States
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Fritzsching KJ, Mao K, Schmidt-Rohr K. Avoidance of Density Anomalies as a Structural Principle for Semicrystalline Polymers: The Importance of Chain Ends and Chain Tilt. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02000] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keith J. Fritzsching
- Department of Chemistry, Brandeis University, 415 South St., Waltham, Massachusetts 02453, United States
| | - Kanmi Mao
- ExxonMobil Research and Engineering, 1545 Route 22 East, Annandale, New Jersey 08801, United States
| | - Klaus Schmidt-Rohr
- Department of Chemistry, Brandeis University, 415 South St., Waltham, Massachusetts 02453, United States
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Machatschek R, Ortmann P, Reiter R, Mecking S, Reiter G. Assembling semiconducting molecules by covalent attachment to a lamellar crystalline polymer substrate. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2016; 7:784-98. [PMID: 27335767 PMCID: PMC4902058 DOI: 10.3762/bjnano.7.70] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 05/13/2016] [Indexed: 06/06/2023]
Abstract
We have investigated the potential of polymers containing precisely spaced side-branches for thin film applications, particularly in the context of organic electronics. Upon crystallization, the side-branches were excluded from the crystalline core of a lamellar crystal. Thus, the surfaces of these crystals were covered by side-branches. By using carboxyl groups as side-branches, which allow for chemical reactions, we could functionalize the crystal with semiconducting molecules. Here, we compare properties of crystals differing in size: small nanocrystals and large single crystals. By assembling nanocrystals on a Langmuir trough, large areas could be covered by monolayers consisting of randomly arranged nanocrystals. Alternatively, we used a method based on local supersaturation to grow large area single crystals of the precisely side-branched polymer from solution. Attachment of the semiconducting molecules to the lamellar surface of large single crystals was possible, however, only after an appropriate annealing procedure. As a function of the duration of the grafting process, the morphology of the resulting layer of semiconducting molecules changed from patchy to compact.
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Affiliation(s)
- Rainhard Machatschek
- Institute of Physics, University of Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg, Germany
| | - Patrick Ortmann
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
| | - Renate Reiter
- Institute of Physics, University of Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg, Germany
| | - Stefan Mecking
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
| | - Günter Reiter
- Institute of Physics, University of Freiburg, Hermann-Herder-Strasse 3, 79104 Freiburg, Germany
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Faye A, Leduc M, Brisson J. Crystallization control of etherethersulfone copolymers by regular insertion of an allyl functionality. Polym Chem 2014. [DOI: 10.1039/c3py01138k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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YAMASHITA M. Detection of the Entropy of Polymer Chain Folding Directions—Crystal Thickness Transition of isotactic Polybutene-1 Tetragonal Phase. KOBUNSHI RONBUNSHU 2009. [DOI: 10.1295/koron.66.428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Napolitano R, Pirozzi B. Studies of Adjacent Re-Entry Folds of Chains of Syndiotactic l,2-Poly(1,3-butadiene) by Molecular Mechanics Calculations. MACROMOL THEOR SIMUL 2007. [DOI: 10.1002/mats.200600065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Landis CR, Root DM, Cleveland T. Molecular Mechanics Force Fields for Modeling Inorganic and Organometallic Compounds. REVIEWS IN COMPUTATIONAL CHEMISTRY 2007. [DOI: 10.1002/9780470125830.ch2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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Manet S, Tibirna C, Boivin J, Delabroye C, Brisson J. Single Crystals of Chain-Folded Copolyterephthalamides. Macromolecules 2006. [DOI: 10.1021/ma052248k] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sabine Manet
- Département de chimie, Centre de recherche en sciences et ingénierie des macromolécules, Faculté des sciences et de génie, Université Laval, Québec, Québec, Canada G1K 7P4
| | - Carmen Tibirna
- Département de chimie, Centre de recherche en sciences et ingénierie des macromolécules, Faculté des sciences et de génie, Université Laval, Québec, Québec, Canada G1K 7P4
| | - Julie Boivin
- Département de chimie, Centre de recherche en sciences et ingénierie des macromolécules, Faculté des sciences et de génie, Université Laval, Québec, Québec, Canada G1K 7P4
| | - Christine Delabroye
- Département de chimie, Centre de recherche en sciences et ingénierie des macromolécules, Faculté des sciences et de génie, Université Laval, Québec, Québec, Canada G1K 7P4
| | - Josée Brisson
- Département de chimie, Centre de recherche en sciences et ingénierie des macromolécules, Faculté des sciences et de génie, Université Laval, Québec, Québec, Canada G1K 7P4
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Armistead JP, Hoffman JD. Direct Evidence of Regimes I, II, and III in Linear Polyethylene Fractions As Revealed by Spherulite Growth Rates. Macromolecules 2002. [DOI: 10.1021/ma010313u] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. P. Armistead
- Chemistry Division, Naval Research Laboratory, Washington D.C. 20375
| | - John D. Hoffman
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218
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Robertson M, Klein P, Ward I, Packer K. NMR study of the energy difference and population of the gauche and trans conformations in solid polyethylene. POLYMER 2001. [DOI: 10.1016/s0032-3861(00)00537-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Balijepalli S, Rutledge GC. Molecular simulation of the intercrystalline phase of chain molecules. J Chem Phys 1998. [DOI: 10.1063/1.477302] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Napolitano R, Pirozzi B. Analysis of the Adjacent Re-Entry Folds in the Form I of Syndiotactic Polypropylene. Macromolecules 1998. [DOI: 10.1021/ma971872x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Roberto Napolitano
- Dipartimento di Chimica, Università di Napoli Federico II, via Mezzocannone 4, 80134 Napoli, Italy
| | - Beniamino Pirozzi
- Dipartimento di Chimica, Università di Napoli Federico II, via Mezzocannone 4, 80134 Napoli, Italy
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Hoffman JD, Miller RL. Kinetic of crystallization from the melt and chain folding in polyethylene fractions revisited: theory and experiment. POLYMER 1997. [DOI: 10.1016/s0032-3861(97)00071-2] [Citation(s) in RCA: 713] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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