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Navarro A, Fernández-Liencres MP, Peña-Ruiz T, Granadino-Roldán JM, Fernández-Gómez M, Domínguez-Espinosa G, Sanchís MJ. A quantum mechanical study on polymer flexibility: Extended model from monomer to tetramer of 2- and 4-bromostyrenes. POLYMER 2009. [DOI: 10.1016/j.polymer.2008.10.041] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Bates G, Beckmann P, Burnell E, Hoatson G, Palffy-Muhoray P. Deuteron nuclear magnetic resonance and orientational order in binary mixtures of liquid crystals. Mol Phys 2006. [DOI: 10.1080/00268978600100271] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- G.S. Bates
- a Department of Chemistry , University of British Columbia , Vancouver , British Columbia , Canada , V6T 1Y6
| | - P.A. Beckmann
- a Department of Chemistry , University of British Columbia , Vancouver , British Columbia , Canada , V6T 1Y6
| | - E.E. Burnell
- a Department of Chemistry , University of British Columbia , Vancouver , British Columbia , Canada , V6T 1Y6
| | - G.L. Hoatson
- b Department of Physics , University of British Columbia , Vancouver , British Columbia , Canada , V6T 2A6
| | - P. Palffy-Muhoray
- b Department of Physics , University of British Columbia , Vancouver , British Columbia , Canada , V6T 2A6
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Sasanuma Y, Ono T, Kuroda Y, Miyazaki E, Hikino K, Arou J, Nakata K, Inaba H, Tozaki KI, Hayashi H, Yamaguchi K. Structure−Property Correlations in Model Compounds of Oligomer Liquid Crystals. J Phys Chem B 2004. [DOI: 10.1021/jp040135h] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yuji Sasanuma
- Department of Materials Technology, Faculty of Engineering, Faculty of Education, and The Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Tetsushi Ono
- Department of Materials Technology, Faculty of Engineering, Faculty of Education, and The Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Yoshihiko Kuroda
- Department of Materials Technology, Faculty of Engineering, Faculty of Education, and The Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Emi Miyazaki
- Department of Materials Technology, Faculty of Engineering, Faculty of Education, and The Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Ken Hikino
- Department of Materials Technology, Faculty of Engineering, Faculty of Education, and The Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Jun Arou
- Department of Materials Technology, Faculty of Engineering, Faculty of Education, and The Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Kohji Nakata
- Department of Materials Technology, Faculty of Engineering, Faculty of Education, and The Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Hideaki Inaba
- Department of Materials Technology, Faculty of Engineering, Faculty of Education, and The Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Ken-ichi Tozaki
- Department of Materials Technology, Faculty of Engineering, Faculty of Education, and The Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Hideko Hayashi
- Department of Materials Technology, Faculty of Engineering, Faculty of Education, and The Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
| | - Kentaro Yamaguchi
- Department of Materials Technology, Faculty of Engineering, Faculty of Education, and The Chemical Analysis Center, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan
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Celebre G, De Luca G, Longeri M, Pileio G, Emsley JW. Is styrene planar in liquid phases? J Chem Phys 2004; 120:7075-84. [PMID: 15267611 DOI: 10.1063/1.1668636] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The proton NMR spectra of two (13)C-labeled isotopomers of styrene dissolved in two liquid crystalline solvents have been obtained and analyzed to yield four sets each of 24 dipolar couplings. These couplings were then used to investigate the structure of the ring and the ene fragments of the molecule, and the position of the maximum, phi(0), in the ring-ene bond rotational probability distribution. To do this, the effect on the dipolar couplings of small-amplitude vibrational motion was taken into account using vibrational wave functions calculated by molecular orbital and density functional methods. It is concluded that the NMR data are consistent with the ring fragment, averaged over the ring-ene rotation, planar, while the ene fragment is not. The value of phi(0) is found to be 18.0 degrees +/-0.2 degrees for the two solutions, compared with a value of 27 degrees calculated by the molecular method MP2/6-31G(*).
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Affiliation(s)
- Giorgio Celebre
- Dipartimento di Chimica, Università della Calabria, Rende (CS), 87036, Italy.
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