Poly[4,6-bis(bis(4-methoxyphenyl)aminium)-1,2-phenylenevinylene]: A high-spin and durable polyradical

Hidenori Murata, Ryosuke Takada, Hiroyuki Nishide

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A purely organic and high-spin polyradical molecule was synthesized, along the non-Kekulé and non-disjoint design of the π-conjugated poly(1,2-phenylenevinylene) backbone pendantly 4,6-substituted with the robust arylaminium radicals. 4,6-Bis(bis(4-methoxyphenyl)amino)-2-bromostyrene was synthesized and polymerized with a Pd-phosphine catalyst to afford the head-to-tail linked polyradical precursor. Oxidation of the polymer with SbCl5 gave the aminium polyradical with a half-life of >10 days at room temperature. A high-spin ground state with an average S = 5/2 for this polyradical was proved by magnetic susceptibility and ESR.

Original languageEnglish
Pages (from-to)2309-2314
Number of pages6
JournalPolyhedron
Volume24
Issue number16-17
DOIs
Publication statusPublished - 2005 Nov 17

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phosphine
Magnetic susceptibility
Ground state
Paramagnetic resonance
Half-Life
Polymers
Oxidation
Catalysts
Molecules
Temperature
phosphines
half life
magnetic permeability
catalysts
oxidation
ground state
polymers
room temperature
molecules

Keywords

  • π-Conjugated polymer
  • Aminium cationic radical
  • Ferromagnetic interaction
  • Non-Kekulé molecule
  • Poly(phenylenevinylene)

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Poly[4,6-bis(bis(4-methoxyphenyl)aminium)-1,2-phenylenevinylene] : A high-spin and durable polyradical. / Murata, Hidenori; Takada, Ryosuke; Nishide, Hiroyuki.

In: Polyhedron, Vol. 24, No. 16-17, 17.11.2005, p. 2309-2314.

Research output: Contribution to journalArticle

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N2 - A purely organic and high-spin polyradical molecule was synthesized, along the non-Kekulé and non-disjoint design of the π-conjugated poly(1,2-phenylenevinylene) backbone pendantly 4,6-substituted with the robust arylaminium radicals. 4,6-Bis(bis(4-methoxyphenyl)amino)-2-bromostyrene was synthesized and polymerized with a Pd-phosphine catalyst to afford the head-to-tail linked polyradical precursor. Oxidation of the polymer with SbCl5 gave the aminium polyradical with a half-life of >10 days at room temperature. A high-spin ground state with an average S = 5/2 for this polyradical was proved by magnetic susceptibility and ESR.

AB - A purely organic and high-spin polyradical molecule was synthesized, along the non-Kekulé and non-disjoint design of the π-conjugated poly(1,2-phenylenevinylene) backbone pendantly 4,6-substituted with the robust arylaminium radicals. 4,6-Bis(bis(4-methoxyphenyl)amino)-2-bromostyrene was synthesized and polymerized with a Pd-phosphine catalyst to afford the head-to-tail linked polyradical precursor. Oxidation of the polymer with SbCl5 gave the aminium polyradical with a half-life of >10 days at room temperature. A high-spin ground state with an average S = 5/2 for this polyradical was proved by magnetic susceptibility and ESR.

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