@article {6713, title = {The synthesis and reaction network of 2-styryl-1-benzopyrylium salts: An unexploited class of potential colorants}, journal = {Dyes and Pigments}, volume = {81}, year = {2009}, note = {

ISI Document Delivery No.: 386VVTimes Cited: 11
Cited Reference Count: 28
Gomes, Raquel Diniz, Ana M. Jesus, Alexandre Parola, A. Jorge Pina, Fernando
Pina, Fernando/C-8161-2011; Parola, A. Jorge/F-4048-2010; Diniz, Ana /C-6705-2013; Caparica, cqfb_staff/H-2611-2013; REQUIMTE, AL/H-9106-2013; Chaves, Pedro/K-1288-2013
Parola, A. Jorge/0000-0002-1333-9076;
FCT-MCTES (Portugal) through FEDER; FOCI [POCI/QUI/57735/2004]; [SFRH/BD/27282/2006]
FCT-MCTES (Portugal) through FEDER and FOCI 2010 is acknowledged for financial support under project POCI/QUI/57735/2004 and PhD grant SFRH/BD/27282/2006 (RG).
Elsevier sci ltd
Oxford

}, month = {2009}, pages = {69-79}, abstract = {

The syntheses, thermodynamic and kinetic properties of a series of 2-styryl-1-benzopyrylium compounds are reported. This family of compounds was found to follow the same pH- and light-dependent network of chemical reactions previously described for flavylium (2-phenyl-1-benzopyrylim) compounds. However, 2-styryl-1-benzopyrylium compounds exhibit absorption spectra substantially red shifted when compared with flavylium analogues (up to 90 nm). In particular, a photochromic system switching from yellow to light blue based on derivatives of natural anthocyanins is for the first time documented. (C) 2008 Elsevier Ltd. All rights reserved.

}, isbn = {0143-7208}, url = {://WOS:000261911600011}, author = {Gomes, R and Diniz, A. M. and Jesus, A. and A. J. Parola and Pina, F} }