Multi-functional carbon dots for visual detection of picric acid and white-light emission

被引：15

作者：

Vidya, T. ^{[1
]}

Anupama, M. ^{[1
]}

Muhammed, Sajan ^{[1
]}

Joseph, Julin ^{[1
]}

Anappara, Aji A. ^{[1
]}

机构：

[1] Natl Inst Technol Calicut NITC, Photon Mat & Devices Lab, Dept Phys, Kozhikode 673601, Kerala, India

来源：

MATERIALS RESEARCH BULLETIN | 2021年 / 138卷

关键词：

Picric acid sensing; Visual detection; White-light emission; Fluorescence; Carbon dots; QUANTUM DOTS; SELECTIVE DETECTION; AQUEOUS-SOLUTION; SENSITIVE DETECTION; FACILE SYNTHESIS; PHOTOLUMINESCENCE; EXCITATION; WASTE;

D O I：

10.1016/j.materresbull.2021.111223

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Herein we report the synthesis of multifunctional carbon dots (CDs) through microwave-assisted pyrolysis of 2-aminoterephthalic acid and polyethylene glycol. The CDs exhibited relatively high photoluminescence quantum yield of about 67 %, and has been found to be selective and ultrasensitive to the nitroaromatic explosive picric acid, with a detection limit as low as 18 nM. The visual detection of the analyte was realized using CDs in the solid-phase, after coating the dots on silica-based thin-layer chromatographic plates. Furthermore, the broad-band luminescence was exploited for UV-to-visible light conversion, to obtain the color parameters of CIE (0.35, 0.33), CRI of 92 and CCT of 5246 K, representing the cool, white-gamut region of 1931 CIE chromaticity diagram.

引用

页数：6

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