Magnetic properties of Langmuir-Blodgett films: A theoretical study. 1. Photoswitching of the magnetic properties of Langmuir films

Nikolai Tyutyulkov; Aleksandar Tsekov Staykov; Klaus Müllen; Fritz Dietz

doi:10.1021/la020576x

Magnetic properties of Langmuir-Blodgett films: A theoretical study. 1. Photoswitching of the magnetic properties of Langmuir films

Nikolai Tyutyulkov, Aleksandar Tsekov Staykov, Klaus Müllen, Fritz Dietz

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The change of intermolecular spin exchange interaction within a half-filled band of two-dimensional Langmuir films formed by photoresponsive radicals has been investigated theoretically. The photoswitching of magnetic properties arises as a result of a reversible photochemical reaction within the building units of the Langmuir films. These units consist of a photochromic moiety connected with a polymethine radical. The various contributions to the Heisenberg effective exchange integral, the direct (Coulomb), kinetic, and indirect spin exchange, have been calculated using the band theory of organic open-shell π-electron systems.

Original language	English
Pages (from-to)	10030-10034
Number of pages	5
Journal	Langmuir
Volume	18
Issue number	25
DOIs	https://doi.org/10.1021/la020576x
Publication status	Published - Dec 10 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/la020576x

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AU - Müllen, Klaus

AU - Dietz, Fritz

PY - 2002/12/10

Y1 - 2002/12/10

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AB - The change of intermolecular spin exchange interaction within a half-filled band of two-dimensional Langmuir films formed by photoresponsive radicals has been investigated theoretically. The photoswitching of magnetic properties arises as a result of a reversible photochemical reaction within the building units of the Langmuir films. These units consist of a photochromic moiety connected with a polymethine radical. The various contributions to the Heisenberg effective exchange integral, the direct (Coulomb), kinetic, and indirect spin exchange, have been calculated using the band theory of organic open-shell π-electron systems.

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Magnetic properties of Langmuir-Blodgett films: A theoretical study. 1. Photoswitching of the magnetic properties of Langmuir films

Abstract

All Science Journal Classification (ASJC) codes

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