Premium
Synthesis, absorption spectra studies, solvatochromism and halochromism of polymethine cyanine dyes
Author(s) -
Shindy H A,
ElMaghraby M A,
Eissa Fayez M
Publication year - 2009
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/j.1478-4408.2009.00181.x
Subject(s) - cyanine , solvatochromism , chemistry , absorption spectroscopy , aqueous solution , absorption (acoustics) , photochemistry , aqueous medium , organic chemistry , solvent , materials science , fluorescence , physics , quantum mechanics , composite material
New polymethine cyanine dyes, including tetramethine and bis‐tetramethine cyanine dyes derived from benzo[2,3‐b;2′,3′‐b′]bis‐pyrazolo[4,5‐b]‐1,4‐(oxa‐, thia‐ and pyra‐)‐zine‐6,12‐dione, were synthesised. Absorption spectra for all the synthesised cyanine dyes were examined in 95% ethanol. The solvatochromism and halochromism for some selected dyes were investigated in pure solvents and in aqueous universal buffer solutions, respectively. Structural confirmations were carried out through elemental and spectroscopic analysis.