LARGE PHOTOINDUCED REFRACTIVE-INDEX CHANGES OF A POLYMER CONTAINING PHOTOCHROMIC NORBORNADIENE GROUPS

Authors
KINOSHITA K HORIE K MORINO S NISHIKUBO T
Citation
K. Kinoshita et al., LARGE PHOTOINDUCED REFRACTIVE-INDEX CHANGES OF A POLYMER CONTAINING PHOTOCHROMIC NORBORNADIENE GROUPS, Applied physics letters, 70(22), 1997, pp. 2940-2942
Citations number
16
Categorie Soggetti
Physics, Applied
Journal title
Applied physics letters → ACNP
ISSN journal
00036951
Volume
70
Issue
22
Year of publication
1997
Pages
2940 - 2942
Database
ISI
SICI code
0003-6951(1997)70:22<2940:LPRCOA>2.0.ZU;2-H
Abstract
We prepared a polymer containing pendant norbornadiene (NBD) moieties, P(MMA(0.43)-co-GMA(0.57)-PNCA), and measured absorbance and refractiv e index spectra before and after photoisomerization of norbornadiene m oieties. Large photoinduced refractive index changes of similar to 0.0 1 were obtained at 632.8 nm, the region far from the absorption band. A quantum yield of 0.50 was obtained for the photoisomerization of NBD moieties in this polymer. These values are sufficient to make efficie nt channel waveguides by photoisomerization. (C) 1997 American Institu te of Physics.