Fluorescent Dyes  >  FRET Probes
Fluorescence resonance energy transfer (FRET) is transfer of the excited state energy from the initially excited donor (D) to an acceptor (A). The donor molecules typically emit at shorter wavelengths that overlap with the absorption of acceptors. The process is a distance-dependent interaction between the electronic excited states of two molecules without emission of a photon. FRET is the result of long-range dipole-dipole interactions between the donor and acceptor. Excited donor molecule has several routes to release its captured energy returning to the ground state. The excited state energy can be dissipated to the environment (as light or heat) or transferred directly to a second acceptor molecule, sending the acceptor to an excited state. The latter process is called FRET.

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 Product Size Catalog # US$  
QXL® 490 acid 10 mg AS-81825-10 $374
QXL® 490 acid, SE
QXL® 490 acid, NHS ester
5 mg AS-81826-5 $193
QXL®570 acid 10 mg AS-81835-10 $374
QXL®570 acid, SE
QXL® 570 acid, NHS ester
5 mg AS-81836-5 $374
QXL® 570 C2 maleimide 5 mg AS-81838 $450
QXL® 610 acid 10 mg AS-81815-10 $374
QXL® 610 acid, SE
QXL® 610 acid, NHS ester
5 mg AS-81816-5 $193
QXL® 610 vinyl sulfone *Thiol - Reactive* 25 mg AS-81817 $247
QXL® 670 acid, SE
QXL® 670 acid, NHS ester
5 mg AS-81841 $374
DABCYL acid
[4 - ((4 - (dimethylamino)phenyl)azo)benzoic acid] *UltraPure Grade*
1 g AS-81800 $66
DABCYL acid, SE
4 - ((4 - (dimethylamino)phenyl)azo)benzoic acid, succinimidyl ester; DABCYL acid, NHS ester
100 mg AS-81801 $88
DABCYL C2 maleimide 25 mg AS-81802 $121
DABCYL Plus™ acid 100 mg AS-81803 $121
DABCYL Plus™ acid, SE
DABCYL Plus™ acid, NHS ester
25 mg AS-81804 $121
DABCYL Plus™ C2 maleimide 10 mg AS-81805 $121
DNP - X acid, SE
6 - (2,4 - Dinitrophenyl)aminohexanoic acid, succinimidyl ester; DNP - X acid, NHS ester
25 mg AS-81228 $66
Fmoc - Lys(DABCYL) - OH
N - α - Fmoc - N - ε - (4,4 - dimethylazobenzene - 4’carbonyl) - L - lysine
100 mg AS-23496-01 $115
Fmoc - Lys(DABCYL) - OH
N - α - Fmoc - N - ε - (4,4 - dimethylazobenzene - 4’carbonyl) - L - lysine
1 g AS-23496 $665
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