Colorimetric and fluorescence “turn-on” methods for the sensitive detection of bromelain using carbon dots functionalized gold nanoparticles as a dual probe

Abstract

Carbon dots were functionalized on the surfaces of gold nanoparticles for the colorimetric and fluorescence detection of bromelain. The limit of detection for bromelain was 18.9 nM and 0.52 nM using UV-visible and fluorescence spectroscopy, respectively.