Cyan-emitting silicon quantum dots as a fluorescent probe directly used for highly sensitive and selective detection of chlorogenic acid.
Talanta
; 233: 122465, 2021 Oct 01.
Article
in En
| MEDLINE
| ID: mdl-34215102
ABSTRACT
As an important bioactive component in plants, chlorogenic acid (CGA) has been widely studied for its potential role in human health. In this work, cyan fluorescent silicon quantum dots were successfully synthesized via a simple one-pot method for the rapid detection of CGA. The optimal excitation and emission wavelength of the obtained SiQDs was 350 nm and 470 nm, respectively. When the CGA was added, the maximum emission intensity of the SiQDs can be effectively quenched due to dynamic and static mixed quenching mechanisms. More significantly, there was a remarkable linear correlation between fluorescence quenching efficiency and a broad concentration of CGA solution range from 10 to 150 µmol/L with a limit of detection (LOD) of 0.43 µmol/L. Furthermore, the proposed SiQDs were successfully applied to analyze CGA in coffee beans and instant coffee after simple pretreatment with satisfactory results. Based on these, a high sensitivity and excellent selectivity fluorescent probe detection system was constructed, and it provides a valuable platform for the detection of CGA and has broad application prospects in the biological and pharmaceutical analysis field.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Quantum Dots
Type of study:
Diagnostic_studies
Limits:
Humans
Language:
En
Journal:
Talanta
Year:
2021
Document type:
Article