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Updated: Aug 30, 2026

A Step Beyond BRET: Fluorescence by Unbound Excitation from Luminescence (FUEL)
Published on: May 23, 2014
Regiodependent luminescence quenching of biotinylated N-sulfonyl-acridinium-9-carboxamides by avidin
Maciej Adamczyk1, Phillip G Mattingly, Jeffrey A Moore
1Department of Chemistry (D09MD), Diagnostics Division, Abbott Laboratories, 100 Abbott Park Road, AP20, Abbott Park, Illinois 60064-6016, USA. maciej.adamczyk@abbot.com
Abstract:
[reaction: see text] Biotin was conjugated to chemiluminescent N-sulfonylacridinium-9-carboxamides at the N-10 or 9-position carboxamide. Upon binding to avidin, the light output of the N-10 derivative (8) was quenched up to 92% upon triggering with basic peroxide, while the 9-position carboxamide conjugate (9) was quenched only 33%. The utility of this effect was demonstrated in a model homogeneous chemiluminescence assay.

