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Applications of Functionalized Carbon-Based Quantum Dots in Fluorescence Sensing of Iron(III)

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Abstract

Iron, an essential trace element exhibits detrimental effects on human health when present at higher or lower concentration than the required. Therefore, there is a pressing demand for sensitive and selective detection of Fe3+ in water, food etc. Unfortunately, in several instances, the traditional approaches suffer from a number of shortcomings like complicated procedures, limited sensitivity, poor selectivity and more expensive and time consuming. The scope of optical tuning and excellent photophysical properties of carbon- based nanomaterials like carbon dots (C-dots) and graphene dots (g-dots) have made them promising optical sensors of metal ions. Moreover, high surface area, superior stability of such materials contributes towards the fruitful development of sensors. The present review offered critical information on the fabrication and fluorimetric applications of these functional nanomaterials for sensitive and selective detection of Fe3+. An in-depth discussion on fluorescent C-dots made from naturally occurring materials and chemical techniques were presented. Effect of do** in C-dots was also highlighted in terms of improved fluorescence response and selectivity. In a similar approach g-dots were also discussed. Many of these sensors exhibited great selectivity, superior sensitivity, high quantum yield, robust chemical and photochemical stability and real-time applicability. Further improvement in these factors can be targeted to develop new sensors.

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Abbreviations

C-dots:

Carbon dots

CNPs:

Carbon nanoparticles

g-dots:

Graphene quantum dots

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Acknowledgements

Authors are thankful to the Director, NIT Hamirpur for providing the research facilities. Sushma and SS are grateful to UGC, New Dehi and NIT Hamirpur respectively for their Research Fellowship.

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  1. Department of Chemistry, National Institute of Technology Hamirpur, Hamirpur, H.P. 177005, India

    Sushma, Shivani Sharma & Kalyan Sundar Ghosh

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Literature was reviewed by Sushma and SS. Drafting of the manuscript was done by Sushma and KSG.

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Correspondence to Kalyan Sundar Ghosh.

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Sushma, Sharma, S. & Ghosh, K.S. Applications of Functionalized Carbon-Based Quantum Dots in Fluorescence Sensing of Iron(III). J Fluoresc (2024). https://doi.org/10.1007/s10895-024-03611-1

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