ATTO Rho3B

ATTO Rho3B is a new fluorescent label related to the well-known dye Rhodamine B.

Optical properties

λ _abs = 566 nm
ε _max = 1.2×10⁵ M ^-1 cm ^-1
λ _fl = 589 nm
n _fl = 50 %
τ _fl = 1.5 ns
CF ₂₆₀ = ε ₂₆₀ /ε _max = 0.27
CF ₂₈₀ = ε ₂₈₀ / ε _max = 0.13

ATTO Rho3B is a new fluorescent label related to the well-known dye Rhodamine B. The dye shows strong absorption and high thermal and photo-stability. The characteristic feature of the dye is its temperature depending fluorescence yield. The dye is moderately hydrophilic. ATTO Rho3B is a cationic dye.

After coupling to a substrate the dye carries a net electrical charge of +1. In solution its fluorescence can be excited efficiently in the range 545 - 575 nm.

ATTO-TEC is a wholly owned subsidiary of Leica Microsystems

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