Fluorescence "Turn OFF-ON" detection of Fe3+ and propiconazole pesticide using blue emissive carbon dots from lemon peel

Foziya Yusuf Vadia; Subhadeep Ghosh; Vaibhavkumar N Mehta; Sanjay Jha; Naved I Malek; Tae Jung Park; Suresh Kumar Kailasa

doi:10.1016/j.foodchem.2023.136796

Fluorescence "Turn OFF-ON" detection of Fe³⁺ and propiconazole pesticide using blue emissive carbon dots from lemon peel

Food Chem. 2023 Dec 1:428:136796. doi: 10.1016/j.foodchem.2023.136796. Epub 2023 Jul 6.

Authors

Foziya Yusuf Vadia¹, Subhadeep Ghosh², Vaibhavkumar N Mehta³, Sanjay Jha³, Naved I Malek¹, Tae Jung Park², Suresh Kumar Kailasa⁴

Affiliations

¹ Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat 395007, Gujarat, India.
² Department of Chemistry, Research Institute of Chem-Bio Diagnostic Technology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea.
³ ASPEE SHAKILAM Biotechnology Institute, Navsari Agricultural University, Surat 395007, Gujarat, India.
⁴ Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat 395007, Gujarat, India. Electronic address: sureshkumarchem@gmail.com.

PMID: 37441937
DOI: 10.1016/j.foodchem.2023.136796

Abstract

In this study, water-soluble carbon dots (CDs) were employed as a novel fluorescence "turn OFF-ON" sensor to detect Fe³⁺ ions in pharmaceutical sample and propiconazole (PC) in food samples. Blue fluorescent "LPCDs" are synthesized from the lemon peel that exhibited emission at 468 nm when excited at 378 nm. The average size of the as-prepared LPCDs is 2.03 nm, displaying a quantum yield of 32 %. Fluorescence "turn OFF-ON" strategy was developed for sensing of Fe³⁺ ion and PC, demonstrating favorable linearity in the range of 0.5-180 μM and 0.1-40 μM with the detection limits of 0.18 μM and 0.054 μM for Fe³⁺ and PC, respectively. Further, LPCDs-loaded cellulose paper was used as visual reader to detect Fe³⁺ and PC. This approach was effectively applied to detect Fe³⁺ and PC in pharmaceutical and vegetable samples.

Keywords: Analytical method; Carbon dots; Fe(3+); Fluorescence turn OFF-ON mechanism; Propiconazole.

MeSH terms

Carbon
Fluorescence
Fluorescent Dyes
Pesticides*
Pharmaceutical Preparations
Quantum Dots*
Spectrometry, Fluorescence

Substances

propiconazole
Carbon
Pesticides
Pharmaceutical Preparations
Fluorescent Dyes