Abstract
Anion exchange in a near-infrared-absorbing heptamethinecyanine dye from an iodide to fluorine-containing anions proceeded smoothly at room temperature to give the corresponding heptamethinecyanine dyes carrying bis(trifluoromethanesulfonyl)imide ((CF3SO2)2N−), hexafluorophosphate (PF6−) and trifluoromethanesulfonate (CF3SO3−) in good yields. Heptamethinecyanine dyes carrying (CF3SO2)2N−, PF6−, and CF3SO3− showed better thermal stabilities than the dye carrying an iodide as a counter anion.
Full Text
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call