A NEW APPROACH TO LIGHT-HARVESTING WITH DENDRITIC ANTENNA

Authors
AIDA T JIANG DL YASHIMA E OKAMOTO Y
Citation
T. Aida et al., A NEW APPROACH TO LIGHT-HARVESTING WITH DENDRITIC ANTENNA, Thin solid films, 331(1-2), 1998, pp. 254-258
Citations number
20
Categorie Soggetti
Physics, Applied","Material Science","Physics, Condensed Matter
Journal title
Thin solid films → ACNP
ISSN journal
00406090
Volume
331
Issue
1-2
Year of publication
1998
Pages
254 - 258
Database
ISI
SICI code
0040-6090(1998)331:1-2<254:ANATLW>2.0.ZU;2-#
Abstract
Large aryl ether azodendrimers (LnAZO) with the number of the aromatic layers (n) larger than 4 showed a fis-to-trans isomerization upon inf rared excitation (1597 cm(-1)) of the dendrimer matrix. whereas smalle r families such us LIAZO-L3AZO were totally silent to the infrared lig ht. The observed dependence of the isomerization rate constant on the irradiation distance suggests an unusual 'multiphotonic' isomerization mechanism which can overcome the activation free energy of 0.84 eV fo r the cis-to-trans isomerization. (C) 1998 Elsevier Science S.A. All r ights reserved.