Photochemically amplified detection of molecular recognition events: an ultra-sensitive fluorescence turn-off binding assay
作者:Tiffany P. Gustafson、Greg A. Metzel、Andrei G. Kutateladze
DOI:10.1039/c1ob05289f
日期:——
Amplified fluorescence quenching methodology based on massive autocatalytic photo-unmasking of a dual function sensitizer–quencher is developed and adopted for photoassisted ultra-sensitive detection of molecular recognition events. The resulting binding assay, based on a molecular recognition-triggered photo-amplified cascade with concomitant decrease of fluorescence is validated with the biotin–avidin pair, achieving attomolar detection.
基于双功能光敏剂-淬灭剂的大量自催化光解蔽,开发并采用了一种增强型荧光淬灭方法,用于分子识别事件的超灵敏光辅助检测。这种结合基于分子识别触发的光放大级联反应与伴随的荧光下降,通过生物素-抗生物素蛋白对的验证,实现了阿托摩尔级的检测。