A simple fluorescence quenching method for berberine determination using water-soluble CdTe quantum dots as probes

A simple fluorescence quenching method for roxithromycin determination using CdTe quantum dots as probes

“…The CdTe QDs colloidal solution was prepared using the reaction between Cd 2+ and NaHTe solution at pH 12.0 with MPA as the stabilizing reagent, which was similar to the previously reported procedure [14]. The molar ratio of Cd 2+ /Te 2À /MPA was 1:0.4:2.3.…”

Simple and sensitive detection method for diprophylline using glutathione-capped CdTe quantum dots as fluorescence probes

“…The measured fluorescence decay time for the GSH-CdTe QDs and GSH-CdTe QDs-DPP system were 38.80 and 38.03 ns, respectively. The results imply that the observed quenching process occurs by a static mechanism [41]. The fluorescence of GSHCdTe QDs originates from the recombination of an electron and a hole [39].…”

Spectral Analysis of Nanodiamond-Berberine Complex Interaction with Living Cells for Nanoparticle Mediated Drug Delivery

“…The fluorescence of berberine can serve as fluorescent marker. In addition, both absorption and emission of berberine are sensitive to environment and can be used for sensing [34,[37][38][39][40][41][42]. Fluorescence spectra of berberine, ND, ND-berberine complex are shown in Fig.…”

“…The mechanisms are discussed, particularly, it was supposed that the interaction of berberine with these systems reduces the interaction with water (polar solvent) and hinders relaxation mechanism of the excited berberine [37]. Oppositely, effect of berberine derivative on quantum dot (QD) CdTe nanoparticle luminescence properties has been studied and it has been suggested that berberine adsorbing on the QD surface is responsible for disrupting electron-hole recombination process and resulting in the repression of luminescence [39].…”