Magnetic Characterization and Computational Modeling of Poly(phenylacetylene)s Bearing Stable Radical Groups

Hiroyuki Nishide; Takashi Kaneko; Masukazu Igarashi; Eishun Tsuchida; Naoki Yoshioka; Paul M. Lahti

doi:10.1021/ma00089a027

Magnetic Characterization and Computational Modeling of Poly(phenylacetylene)s Bearing Stable Radical Groups

Hiroyuki Nishide, Takashi Kaneko, Masukazu Igarashi, Eishun Tsuchida, Naoki Yoshioka, Paul M. Lahti

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

59 Citations (Scopus)

Abstract

The magnetic properties of poly(phenylacetylene)s with radical groups at the paraposition, poly[(3,5-di-tert-butyl-4-oxyphenyl)acetylene] (1), poly[[4-[(3,5-di-tert-butyl-4-oxyphenyl)(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]phenyl]acetylene] (2), and poly[[4-(N-tert-butyl-N-oxyamino)-phenyl]acetylene] (3), were studied with a SQUID magnetometer. The magnetization and magnetic susceptibility indicated unexpected antiferromagnetic interactions between the radical sites. The exchange interaction observed in these conjugated polyradicals was discussed in connection with their computationally modeled structures.

Original language	English
Pages (from-to)	3082-3086
Number of pages	5
Journal	Macromolecules
Volume	27
Issue number	11
DOIs	https://doi.org/10.1021/ma00089a027
Publication status	Published - 1994 May 1
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma00089a027

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title = "Magnetic Characterization and Computational Modeling of Poly(phenylacetylene)s Bearing Stable Radical Groups",

abstract = "The magnetic properties of poly(phenylacetylene)s with radical groups at the paraposition, poly[(3,5-di-tert-butyl-4-oxyphenyl)acetylene] (1), poly[[4-[(3,5-di-tert-butyl-4-oxyphenyl)(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]phenyl]acetylene] (2), and poly[[4-(N-tert-butyl-N-oxyamino)-phenyl]acetylene] (3), were studied with a SQUID magnetometer. The magnetization and magnetic susceptibility indicated unexpected antiferromagnetic interactions between the radical sites. The exchange interaction observed in these conjugated polyradicals was discussed in connection with their computationally modeled structures.",

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T1 - Magnetic Characterization and Computational Modeling of Poly(phenylacetylene)s Bearing Stable Radical Groups

AU - Nishide, Hiroyuki

AU - Kaneko, Takashi

AU - Igarashi, Masukazu

AU - Tsuchida, Eishun

AU - Yoshioka, Naoki

AU - Lahti, Paul M.

PY - 1994/5/1

Y1 - 1994/5/1

N2 - The magnetic properties of poly(phenylacetylene)s with radical groups at the paraposition, poly[(3,5-di-tert-butyl-4-oxyphenyl)acetylene] (1), poly[[4-[(3,5-di-tert-butyl-4-oxyphenyl)(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]phenyl]acetylene] (2), and poly[[4-(N-tert-butyl-N-oxyamino)-phenyl]acetylene] (3), were studied with a SQUID magnetometer. The magnetization and magnetic susceptibility indicated unexpected antiferromagnetic interactions between the radical sites. The exchange interaction observed in these conjugated polyradicals was discussed in connection with their computationally modeled structures.

AB - The magnetic properties of poly(phenylacetylene)s with radical groups at the paraposition, poly[(3,5-di-tert-butyl-4-oxyphenyl)acetylene] (1), poly[[4-[(3,5-di-tert-butyl-4-oxyphenyl)(3,5-di-tert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)methyl]phenyl]acetylene] (2), and poly[[4-(N-tert-butyl-N-oxyamino)-phenyl]acetylene] (3), were studied with a SQUID magnetometer. The magnetization and magnetic susceptibility indicated unexpected antiferromagnetic interactions between the radical sites. The exchange interaction observed in these conjugated polyradicals was discussed in connection with their computationally modeled structures.

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