Magnetic properties after irradiation of poly(m-phenyleneethynylene) having diazo and nitronylnitroxide groups and its model compounds

Takeyuki Akita, Noboru Koga

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In order to achieve a pure organic high-spin molecule, poly(m-phenyleneethynylene) derivative 1 having diazo groups and nitronyl nitroxide moieties alternately were designed. Its three model compounds, diphenylacetylene derivative 2, bis(phenylethynyl)benzene derivative 3, and oligomeric compound 4 having partial structure of 1 have been prepared by the coupling reaction of ethynyl derivatives of phenylnitronylnitroxide and iodo derivatives of diphenyldiazomethane. Field dependence of magnetization after irradiation of 2 and 3 in frozen solutions suggested that the photo-generated species have quartet and quintet ground states with J/kB values of + 1.75 and + 1.09 K, respectively. However, spin interaction between carbene and nitronylnitroxide through 3,3-diphenylacetylene moiety is not strong enough to form high-spin chain having long correlation length for 4.

Original languageEnglish
Pages (from-to)1475-1477
Number of pages3
JournalPolyhedron
Volume20
Issue number11-14
DOIs
Publication statusPublished - May 30 2001

Fingerprint

Magnetic properties
Irradiation
magnetic properties
Derivatives
irradiation
Benzene Derivatives
carbenes
benzene
Ground state
Magnetization
magnetization
ground state
Benzene
Molecules
phenyleneethynylene
molecules
interactions
biphenylacetylene

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

Cite this

Magnetic properties after irradiation of poly(m-phenyleneethynylene) having diazo and nitronylnitroxide groups and its model compounds. / Akita, Takeyuki; Koga, Noboru.

In: Polyhedron, Vol. 20, No. 11-14, 30.05.2001, p. 1475-1477.

Research output: Contribution to journalArticle

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