MAGNETIC CHARACTERIZATION AND COMPUTATIONAL MODELING OF POLY(PHENYLACETYLENE)S BEARING STABLE RADICAL GROUPS

Authors
NISHIDE H KANEKO T IGARASHI M TSUCHIDA E YOSHIOKA N LAHTI PM
Citation
H. Nishide et al., MAGNETIC CHARACTERIZATION AND COMPUTATIONAL MODELING OF POLY(PHENYLACETYLENE)S BEARING STABLE RADICAL GROUPS, Macromolecules, 27(11), 1994, pp. 3082-3086
Citations number
35
Categorie Soggetti
Polymer Sciences
Journal title
Macromolecules → ACNP
ISSN journal
00249297
Volume
27
Issue
11
Year of publication
1994
Pages
3082 - 3086
Database
ISI
SICI code
0024-9297(1994)27:11<3082:MCACMO>2.0.ZU;2-K
Abstract
The magnetic properties of poly(phenylacetylene)s with radical groups at the paraposition, poly[(3,5-di-tert-butyl-4-oxyphenyl)acetylene] lo hexa-2,5-dien-1-ylidene)methyl]phenyl]acetylene] (2), and poly[[4-(N-t ert-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. T he exchange interaction observed in these conjugated polyradicals was discussed in connection with their computationally modeled structures.