Nanoscale optical microscopy of conjugated polymer films

Citation
Ja. Dearo et al., Nanoscale optical microscopy of conjugated polymer films, SYNTH METAL, 101(1-3), 1999, pp. 300-301
Citations number
17
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SYNTHETIC METALS
ISSN journal
0379-6779 → ACNP
Volume
101
Issue
1-3
Year of publication
1999
Pages
300 - 301
Database
ISI
SICI code
0379-6779(199905)101:1-3<300:NOMOCP>2.0.ZU;2-8
Abstract
Near-field scanning optical microscopy (NSOM) has been used to probe the ph otoluminescence, linear dichroism and photoconductivity of free-standing po ly(p-phenylene vinylene) (PPV) films with spatial resolution better than 10 0 nm. We observe a strong correlation between each of these properties and film morphology in both non-oriented and stretch-oriented films. The nan-or iented PPV thin films exhibit mesoscale non-uniform photoluminescence corre lated to polymer clusters. Upon stretch-orientation, PPV thin films show av erage polymer chain orientation parallel to the stretch axis as well as dis tinct areas of perpendicular molecular orientation correlated to film topog raphy.