Substituent Effects on Exchange Coupling: Controlling the Interactions between Unpaired Electrons

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Title: Substituent Effects on Exchange Coupling: Controlling the Interactions between Unpaired Electrons
Author: Coote, Tashni-Ann
Advisors: Dr. Chris Gorman, Committee Member
Dr. Tatyana Smirnova, Committee Member
Dr. Bruce Novak, Committee Member
Dr. David A. Shultz, Committee Chair
Abstract: Design, synthesis, and characterization of novel high-spin species are critical for advancing the field of molecular magnetism, and subsequently creating new magnetic materials. As a means of grasping an understanding of how it is that one can control the electronic, hence magnetic interactions within a high-spin species, this study focuses on structure- property relationships in a series of bis(semiquinone) biradicals. The biradical moiety is the simplest of exchange-coupled systems. As electron-withdrawing, -donating and neutral substituents are placed on the coupler or spin carrier fragment of the biradicals under study, it is shown that there is a substituent effect operating within the series of ferromagnetically coupled m-phenylene bis(semiquinone) moieties.
Date: 2007-08-07
Degree: PhD
Discipline: Chemistry
URI: http://www.lib.ncsu.edu/resolver/1840.16/4635


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