BEYOND THE CYANINE LIMIT - PEIERLS DISTORTION AND SYMMETRY COLLAPSE IN A POLYMETHINE DYE

Authors
TOLBERT LM ZHAO XD
Citation
Lm. Tolbert et Xd. Zhao, BEYOND THE CYANINE LIMIT - PEIERLS DISTORTION AND SYMMETRY COLLAPSE IN A POLYMETHINE DYE, Journal of the American Chemical Society, 119(14), 1997, pp. 3253-3258
Citations number
48
Categorie Soggetti
Chemistry
Journal title
Journal of the American Chemical Society → ACNP
ISSN journal
00027863
Volume
119
Issue
14
Year of publication
1997
Pages
3253 - 3258
Database
ISI
SICI code
0002-7863(1997)119:14<3253:BTCL-P>2.0.ZU;2-2
Abstract
Theory predicts that cyanine dyes and related linear systems undergo s ymmetry collapse and bond localization at long chain lengths. Beyond t his ''cyanine limit'', the properties of these systems do not extrapol ate from their shorter counterparts. To test this prediction, dipyrido cyanines have been synthesized and shown to undergo such symmetry coll apse with chain lengths as short as 13.