Photochemical and thermal behaviour of new photochromic indeno-fused naphthopyrans
authors Coelho, PJ; Salvador, MA; Oliveira, MM; Carvalho, LM
journal JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
author keywords photochromism; photokinetics; heterocycles; naphthopyrans; thermal bleaching
abstract Three new indeno-fused naphthopyrans were prepared and their photochromic behaviour was investigated. UV-vis continuous irradiation of indeno-fused 3H-naphtho[2,1-b]pyrans generates two photoisomers in variable relative amounts with very different thermal stabilities. While one isomer exhibits a fast thermal bleaching the other is thermally very stable and returns to the uncoloured form mainly through a photochemical process promoted by visible light irradiation. © 2004 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE SA
issn 1010-6030
year published 2005
volume 172
issue 3
beginning page 300
ending page 307
digital object identifier (doi) 10.1016/jphtotochem.2004.12.019
web of science category Chemistry, Physical
subject category Chemistry
unique article identifier WOS:000229524200012
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 2.891
5 year journal impact factor 2.680
category normalized journal impact factor percentile 56.122
dimensions (citation analysis):
altmetrics (social interaction):



 


Apoio

1suponsers_list_ciceco.jpg