ATTO 680
ATTO 680 belongs together with ATTO 655 and ATTO 700 to a new generation of 荧光标记物s.
Characteristic features of the label are strong absorption, high 荧光量子产率, good water solubility, and high thermal and photo-stability. ATTO 680 是一种zwitterionic dye. After coupling to a substrate the dye moiety is electrically neutral. ATTO 680 是一种strong electron acceptor. Its fluorescence is efficiently quenched by electron donors like guanine, tryptophan, etc.
The fluorescence is excited most efficiently in the range 645 - 695 nm. A suitable excitation source for the dye is the Krypton-Ion laser using the 676 nm line or a diode-laser emitting at 670 nm.
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