Preparation of yellow emissive nitrogen-doped carbon dots from o-phenylenediamine and their application in curcumin sensing. (4th May 2022)

• Record Type: Journal Article
• Authors: Dong, Yuanyuan; Li, Tianze; Bateer, Buhe; Wang, Huiwen; Fu, Qiuyue; Zhang, Fengfa
• Is Part Of: New journal of chemistry. Volume 46:Number 20(2022)
• Page Start: 9543
• Page End: 9549
• Publication Date: 2022-05-04
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/d2nj00926a
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : In this work, o -phenylenediamine ( o -PD) and ethanol are used as raw materials, and a simple solvothermal method is used to prepare yellow emissive nitrogen-doped CDs (YNCDs) (with yellow emission λ ex / λ em = 410/555 nm). Abstract : In this work, o -phenylenediamine ( o -PD) and ethanol are used as raw materials, and a simple solvothermal method is used to prepare yellow emissive nitrogen-doped CDs (YNCDs) (with yellow emission λ ex / λ em = 410/555 nm). Based on the inner filter effect (IFE), curcumin can effectively inhibit the photoluminescence of YNCDs. Using YNCDs as nanoprobes, a "turn-off" sensor platform for detecting curcumin is established, with a lower detection limit (3S/N) of 0.01 μmol L −1 . More importantly, the developed sensor platform achieves highly selective and sensitive detection of curcumin in real samples including curry powder, human urine, human serum and river water, with satisfactory accuracy and recovery. Furthermore, the excellent optical properties of YNCDs can also be used in invisible inks in the fields of patterning, information storage and anti-counterfeiting.