Next Article in Journal
Crystal and Molecular Structures of Two 2-Aminothiophene Derivatives
Next Article in Special Issue
Photoinduced Phase Transition in Strongly Electron-Lattice and Electron–Electron Correlated Molecular Crystals
Previous Article in Journal
Halogen Interactions in 2,4,5-Tribromoimidazolium Salts
Previous Article in Special Issue
Theoretical Studies on Phase Transitions in Quasi-One-Dimensional Molecular Conductors
Crystals 2012, 2(3), 1034-1057; doi:10.3390/cryst2031034
Review

Magnetic and Electric Properties of Organic Conductors Probed by 13C-NMR Using Selective-Site Substituted Molecules

,
 and
*
Department of Condensed Matter Physics, Hokkaido University, Kita-ku Sapporo, Hokkaido 060-0810, Japan
* Author to whom correspondence should be addressed.
Received: 6 April 2012 / Revised: 26 June 2012 / Accepted: 6 July 2012 / Published: 27 July 2012
(This article belongs to the Special Issue Molecular Conductors)
View Full-Text   |   Download PDF [382 KB, uploaded 27 July 2012]   |  

Abstract

Quasi-One and quasi-two dimensional organic conductors consisting of TTF derivatives such as BEDT-TTF (bis-(ethylene-dithio)-tetra-thia-fulvalene) and TMTCF (C = S; TMTTF: tetra-methyl-tetra-thia-fulvalene, C = Se; TMTSF: tetra-methyl-tetra-selena-fulvalene) have been well investigated in condensed matter physics because of interest in the emerging electric and magnetic properties, such as the spin density wave, charge order, superconductivity, anti-ferromagnetism, and so on. To probe the electronic state, nuclear magnetic resonance (NMR) is one of the most powerful tools as the microscopic magnetometer. A number of 13C-NMR studies have been performed of the double-site central 13C=13C bond substituted molecules. However, problems with the coupled spin system of 13C=13C complicated the interpretation for observations on NMR. Therefore, single-site 13C-enriched molecules are desired. We summarize the problem of Pake doublet and the preparation of the single-site 13C-susbstituted BEDT-TTF and TMTCF molecules. We also demonstrate the superiority of 13C-NMR of the single-site 13C-susbstituted molecule utilizing the hyperfine coupling tensor.
Keywords: 13C-NMR; TMTTF; TMTSF; BEDT-TTF; Pake doublet; hyperfine coupling tensor 13C-NMR; TMTTF; TMTSF; BEDT-TTF; Pake doublet; hyperfine coupling tensor
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
SciFeed

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
RIS
MDPI and ACS Style

Hirose, S.; Misawa, M.; Kawamoto, A. Magnetic and Electric Properties of Organic Conductors Probed by 13C-NMR Using Selective-Site Substituted Molecules. Crystals 2012, 2, 1034-1057.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here

Comments

[Return to top]
Crystals EISSN 2073-4352 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert