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Design of ferromagnetic alternating stacks of neutral and ion-radical hydrocarbons

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons48084

Ivanova,  A.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons47624

Baumgarten,  Martin
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48143

Karabunarliev,  S.
MPI for Polymer Research, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons48889

Tyutyulkov,  N.
MPI for Polymer Research, Max Planck Society;

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Citation

Ivanova, A., Baumgarten, M., Karabunarliev, S., & Tyutyulkov, N. (2003). Design of ferromagnetic alternating stacks of neutral and ion-radical hydrocarbons. Physical Chemistry Chemical Physics, 5(21), 4932-4937.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-6392-8
Abstract
Alternating stacks of π-radicals and diamagnetic subunits are considered in detail as an extension of earlier work. Such alternating stacks are predicted to avoid the typical antiferromagnetic spin-exchange of identical face-to-face radicals via spin polarization of the diamagnetic spacer in between. It is shown here that neutral spin carriers like perinaphthenyl 2 and periperylenyl 3 are very promising candidates if alternatingly stacked with aromatics like pyrene, perylene or coronene to achieve effective ferromagnetic coupling along the crystal stack, while ion-radicals of aromatic hydrocarbons are not an equally good choice since partial charge transfer suppresses intermolecular spin polarization. The influence of structural factors on the effective exchange is discussed, too.