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Deuterated Molecules and Polymers for Neutron Studies

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Organic Chemistry".

Deadline for manuscript submissions: closed (10 November 2014) | Viewed by 19218

Special Issue Editors


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Guest Editor
Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37831‐6494, USA
Interests: synthesis of molecules containing deuterium and other NMR‐active stable nuclei; synthesis of ligands for self‐assembled systems; monomer and polymer synthesis; Nuclear Magnetic Resonance for probing molecular dynamics and elucidating reaction mechanisms

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Guest Editor
1. Center for Nanophase Material Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
2. Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA
Interests: controlled polymer synthesis (especially via anionic polymerization); polymer molecular characterization; Isotopically labelled polymers; conjugated polymers; charged polymers; stimuli-responsive polymers; polymeric colloids

Special Issue Information

Dear Colleagues,

Deuterium (2H or D), a stable isotope of hydrogen that possesses both a neutron and a proton, exhibits a distinctively different strength of interaction with neutrons than protium does. This difference can provide contrast in differential scattering of protium vs. deuterium in neutron scattering experiments, and accordingly, can provide information about structure and dynamics that would not be accessible by other techniques (such as X‐ray scattering). As more powerful neutron‐generating facilities have become available, interest in utilizing neutron scattering for structural characterization, which is important for the design of new materials, has increased. Consequently, there is a growing need for new deuterated materials, as well as for methodologies of selective deuteration that create, for example, well‐defined (partially or fully) deuterated molecules and polymers. Therefore, we and Molecules feel that the time is right for a Special Issue covering deuterated molecules and polymers.

This Special Issue of Molecules will consider contributions covering the synthesis and characterization of selectively or fully deuterated molecules of all kinds, including monomers, polymers/macromolecules, and surfactants, as broadly indicated by the keywords. Review articles by experts in the field are also welcome.

Dr. Peter V. Bonnesen
Dr. Kunlun Hong
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.


Keywords

  • deuterium/deuteration
  • synthesis of deuterated monomers/polymers/macromolecules
  • kinetics/dynamics/structural analysis

Published Papers (2 papers)

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Research

261 KiB  
Article
Mild Conditions for Deuteration of Primary and Secondary Arylamines for the Synthesis of Deuterated Optoelectronic Organic Molecules
by Anwen M. Krause-Heuer, Nageshwar R. Yepuri, Tamim A. Darwish and Peter J. Holden
Molecules 2014, 19(11), 18604-18617; https://doi.org/10.3390/molecules191118604 - 13 Nov 2014
Cited by 14 | Viewed by 9623
Abstract
Deuterated arylamines demonstrate great potential for use in optoelectronic devices, but their widespread utility requires a method for large-scale synthesis. The incorporation of these deuterated materials into optoelectronic devices also provides the opportunity for studies of the functioning device using neutron reflectometry based [...] Read more.
Deuterated arylamines demonstrate great potential for use in optoelectronic devices, but their widespread utility requires a method for large-scale synthesis. The incorporation of these deuterated materials into optoelectronic devices also provides the opportunity for studies of the functioning device using neutron reflectometry based on the difference in the scattering length density between protonated and deuterated compounds. Here we report mild deuteration conditions utilising standard laboratory glassware for the deuteration of: diphenylamine, N-phenylnaphthylamine, N-phenyl-o-phenylenediamine and 1-naphthylamine (via H/D exchange in D2O at 80 °C, catalysed by Pt/C and Pd/C). These conditions were not successful in the deuteration of triphenylamine or N,N-dimethylaniline, suggesting that these mild conditions are not suitable for the deuteration of tertiary arylamines, but are likely to be applicable for the deuteration of other primary and secondary arylamines. The deuterated arylamines can then be used for synthesis of larger organic molecules or polymers with optoelectronic applications. Full article
(This article belongs to the Special Issue Deuterated Molecules and Polymers for Neutron Studies)
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1914 KiB  
Article
Ion Acceleration and D-D Nuclear Fusion in Laser-Generated Plasma from Advanced Deuterated Polyethylene
by Lorenzo Torrisi
Molecules 2014, 19(10), 17052-17065; https://doi.org/10.3390/molecules191017052 - 23 Oct 2014
Cited by 21 | Viewed by 8915
Abstract
Deuterated polyethylene targets have been irradiated by means of a 1016 W/cm2 laser using 600 J pulse energy, 1315 nm wavelength, 300 ps pulse duration and 70 micron spot diameter. The plasma parameters were measured using on-line diagnostics based on ion [...] Read more.
Deuterated polyethylene targets have been irradiated by means of a 1016 W/cm2 laser using 600 J pulse energy, 1315 nm wavelength, 300 ps pulse duration and 70 micron spot diameter. The plasma parameters were measured using on-line diagnostics based on ion collectors, SiC detectors and plastic scintillators, all employed in time-of-flight configuration. In addition, a Thomson parabola spectrometer, an X-ray streak camera, and calibrated neutron dosimeter bubble detectors were employed. Characteristic protons and neutrons at maximum energies of 3.0 MeV and 2.45 MeV, respectively, were detected, confirming that energy spectra of reaction products coming from deuterium-deuterium nuclear fusion occur. In thick advanced targets a fusion rate of the order of 2 × 108 fusions per laser shot was calculated. Full article
(This article belongs to the Special Issue Deuterated Molecules and Polymers for Neutron Studies)
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