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

Biradicals;Magnetism;Exchange Coupling;Substituent Effect;Semiquinone

Coote, Tashni-Ann ; Dr. Chris Gorman, Committee Member,Dr. Tatyana Smirnova, Committee Member,Dr. Bruce Novak, Committee Member,Dr. David A. Shultz, Committee Chair,Coote, Tashni-Ann ; Dr. Chris Gorman ; Committee Member ; Dr. Tatyana Smirnova ; Committee Member ; Dr. Bruce Novak ; Committee Member ; Dr. David A. Shultz ; Committee Chair

University:North Carolina State University

关键词: Biradicals;    Magnetism;    Exchange Coupling;    Substituent Effect;    Semiquinone;   

Others  :  https://repository.lib.ncsu.edu/bitstream/handle/1840.16/4635/Coote.pdf?sequence=1&isAllowed=y

美国|英语

来源: null

【 摘 要 】

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.