Nitrogen Doped Carbon Quantum Dots as Fluorescence "Turn-Off-On" Sensor for Detection of Fe3+ Ions and Ascorbic Acid in Moringa oleifera and Citrus Lemon

被引：4

作者：

Sahu, Girish ^{[1
,2
]}

Chawre, Yogyata ^{[1
]}

Kujur, Ankita Beena ^{[1
]}

Miri, Pinki ^{[2
]}

Sinha, Akash ^{[1
,2
]}

Nagwanshi, Rekha ^{[3
]}

Karbhal, Indrapal ^{[1
]}

Ghosh, Kallol K. ^{[1
]}

Jena, Vinod K. ^{[2
]}

Satnami, Manmohan L. ^{[1
]}

机构：

[1] Pt Ravishankar Shukla Univ, Sch Studies Chem, Raipur 492010, Chhattisgarh, India

[2] Govt Nagarjuna P G Coll Sci, Dept Chem, Raipur 492010, Chhattisgarh, India

[3] Govt P G Sci Coll, Dept Chem, Ujjain 456010, Madhya Pradesh, India

来源：

JOURNAL OF FLUORESCENCE | 2024年

关键词：

Carbon quantum dots; Quantum yield; Turn-off; Turn-on; Detection of Fe3+ ions and ascorbic acid; PROBE; BIOMASS; IRON; PHOTOLUMINESCENCE; SAMPLES; FACILE; LIQUID; SYSTEM;

D O I：

10.1007/s10895-024-04012-0

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

In recent year, the uses of carbon quantum dots (CQDs) have increased in many fields. Herein we report, synthesis of fluorescent nitrogen doped carbon quantum dots (N-CQDs) by simple and ecofriendly hydrothermal method. The as-synthesized N-CQDs were characterized by various techniques and the quantum yield was also calculated. Then, application of N-CQDs were performed as a sensor for detection of ferric ions (Fe3+) based on static quenching mechanism (turn-off) which occurred due to formation of non-fluorescent complex between N-CQDs and Fe3+ ions. Interestingly, fluorescence intensity of quenched N-CQDs has been significantly recovered (turn-on) by addition of ascorbic acid (AA). The recovery mechanism is based on the redox reaction between Fe3+ ions and AA. Thus, N-CQDs has been used as fluorescence "turn-off-on" sensor for detection of Fe3+ ions and AA. Further this detection system is used for detecting Fe3+ ions in Moringa oleifera and AA in citrus lemon.

引用

页数：13

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