Journal
DYES AND PIGMENTS
Volume 74, Issue 2, Pages 404-409Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2006.03.003
Keywords
cyanine dyes; phosphorus ligands; spectroscopic characterisation; fluorescence; complexation
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We present the synthesis of new N-1,5 phosphosubstituted pentamethine cyanine dyes in high yields. The compounds are obtained from original N-phosphonates quaternary heterocyclic ammonium salts, with an activated methyl group in the 2-position. Moreover, the aqueous solubility of these new dyes is emphasized. The spectroscopic parameters of the new compounds are described together with a preliminary study of divalent cations complexation in fluorescence. (c) 2006 Elsevier Ltd. All rights reserved.
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