Description
Optical properties
λ abs = 498 nm
ε max = 8.0×10 4 M -1 cm -1
λ fl = 526 nm
n fl = 20 %
τ fl = 1.0 ns
CF 260 = ε 260 /ε max = 0.45
CF 280 = ε 280 / ε max = 0.37
ATTO 495 is a novel fluorescent label derived from the well-known dye Acridine Orange. Characteristic features of the label are strong absorption, high fluorescence quantum yield, and high thermal and photo-stability. The dye shows intense and long-lived phosphorescence in solid matrix or at low temperatures. ATTO 495 is moderately hydrophilic. The fluorescence can be excited efficiently in the range 465 - 510 nm .