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Ferromagnetic Spin Coupling through the 3,4'-Biphenyl Moiety in Arylamine Oligomers-Experimental and Computational Study.
- Source :
-
The journal of physical chemistry. B [J Phys Chem B] 2014 Jul 10; Vol. 118 (27), pp. 7657-7667. Date of Electronic Publication: 2014 Jun 27. - Publication Year :
- 2014
-
Abstract
- This report describes the study of a dimer d <superscript>2+</superscript> and a linear trimer t <superscript>3+</superscript> of amminium radical cations coupled by 3,4'-biphenyl spin coupling units. The synthesis of the parent diamine and triamine and their optical and electrochemical properties obtained by UV-visible and cyclic voltammetry are presented. The chemical doping of the parent diamine d and triamine t was performed quantitatively to obtain samples containing the corresponding dimer d <superscript>2+</superscript> and trimer t <superscript>3+</superscript> in almost pure high-spin states as evidenced by pulsed EPR nutation spectroscopy. The J coupling constants of the corresponding S = 1 and S = 3/2 spin states were measured (J/k = 135 K) and compared quantitatively to DFT calculations.
Details
- Language :
- English
- ISSN :
- 1520-5207
- Volume :
- 118
- Issue :
- 27
- Database :
- MEDLINE
- Journal :
- The journal of physical chemistry. B
- Publication Type :
- Academic Journal
- Accession number :
- 24927757
- Full Text :
- https://doi.org/10.1021/jp504223v