@article{ART003062936},
author={Sasikumar Kandasamy and Rajamanikandan Ramar and Ju, Heongkyu},
title={Inner filter effect-based highly sensitive quantification of 4-nitrophenol by strong fluorescent N, S co-doped carbon dots},
journal={Carbon Letters},
issn={1976-4251},
year={2024},
volume={34},
number={2},
pages={851-863},
doi={10.1007/s42823-023-00666-1}
TY - JOUR
AU - Sasikumar Kandasamy
AU - Rajamanikandan Ramar
AU - Ju, Heongkyu
TI - Inner filter effect-based highly sensitive quantification of 4-nitrophenol by strong fluorescent N, S co-doped carbon dots
JO - Carbon Letters
PY - 2024
VL - 34
IS - 2
PB - Korean Carbon Society
SP - 851
EP - 863
SN - 1976-4251
AB - 4-Nitrophenol (4NP) is a vital intermediate in organic industries, and its exploitation creates serious environmental issues. We propose a fluorescence quenching-based strategy with nitrogen and sulfur co-doped carbon dots (NS-CDs) for highly sensitive 4NP detection with excellent selectivity. The NS-CDs are produced through the hydrothermal process, in which citric acid serves as a carbon source and cysteamine hydrochloride as a source of N and S. The effect of doping was also studied by synthesizing undoped CDs and examining their properties. As-developed NS-CDs exhibit a bright cyan blue color with maximum emission centered at 465 nm. The fluorescence of NS-CDs is significantly quenched in an approximately linear fashion with increasing 4NP concentration (7.5–97.5 μM). The inner filter effect (IFE) and static quenching (SQ) between NS-CDs and 4NP are responsible for such fluorescence reduction. The fluorimetry technique enables the quantification of 4NP with a limit of detection (LOD) of about 0.028 μM. Moreover, the fluorescence quenching is tested for several other chemical compounds but they generate false quenching signals; only 4NP leads to fluorescence quenching of NS-CDs, demonstrating excellent selectivity. The “turn-off” fluorescence properties and visually apparent color change of the fluorescent probe reveal the excellent performance for 4NP sensing. The NS-CDs’ capability of quantifying 4NP in real water samples (tap water and drinking water) produces an excellent recovery rate ranging between 96.24 and 98.36%.
KW - 4-Nitrophenol Carbon dots Cysteamine hydrochloride HR-TEM Inner filter effect Nitrogen and sulfur co-doping
DO - 10.1007/s42823-023-00666-1
ER -
Sasikumar Kandasamy, Rajamanikandan Ramar and Ju, Heongkyu. (2024). Inner filter effect-based highly sensitive quantification of 4-nitrophenol by strong fluorescent N, S co-doped carbon dots. Carbon Letters, 34(2), 851-863.
Sasikumar Kandasamy, Rajamanikandan Ramar and Ju, Heongkyu. 2024, "Inner filter effect-based highly sensitive quantification of 4-nitrophenol by strong fluorescent N, S co-doped carbon dots", Carbon Letters, vol.34, no.2 pp.851-863. Available from: doi:10.1007/s42823-023-00666-1
Sasikumar Kandasamy, Rajamanikandan Ramar, Ju, Heongkyu "Inner filter effect-based highly sensitive quantification of 4-nitrophenol by strong fluorescent N, S co-doped carbon dots" Carbon Letters 34.2 pp.851-863 (2024) : 851.
Sasikumar Kandasamy, Rajamanikandan Ramar, Ju, Heongkyu. Inner filter effect-based highly sensitive quantification of 4-nitrophenol by strong fluorescent N, S co-doped carbon dots. 2024; 34(2), 851-863. Available from: doi:10.1007/s42823-023-00666-1
Sasikumar Kandasamy, Rajamanikandan Ramar and Ju, Heongkyu. "Inner filter effect-based highly sensitive quantification of 4-nitrophenol by strong fluorescent N, S co-doped carbon dots" Carbon Letters 34, no.2 (2024) : 851-863.doi: 10.1007/s42823-023-00666-1
Sasikumar Kandasamy; Rajamanikandan Ramar; Ju, Heongkyu. Inner filter effect-based highly sensitive quantification of 4-nitrophenol by strong fluorescent N, S co-doped carbon dots. Carbon Letters, 34(2), 851-863. doi: 10.1007/s42823-023-00666-1
Sasikumar Kandasamy; Rajamanikandan Ramar; Ju, Heongkyu. Inner filter effect-based highly sensitive quantification of 4-nitrophenol by strong fluorescent N, S co-doped carbon dots. Carbon Letters. 2024; 34(2) 851-863. doi: 10.1007/s42823-023-00666-1
Sasikumar Kandasamy, Rajamanikandan Ramar, Ju, Heongkyu. Inner filter effect-based highly sensitive quantification of 4-nitrophenol by strong fluorescent N, S co-doped carbon dots. 2024; 34(2), 851-863. Available from: doi:10.1007/s42823-023-00666-1
Sasikumar Kandasamy, Rajamanikandan Ramar and Ju, Heongkyu. "Inner filter effect-based highly sensitive quantification of 4-nitrophenol by strong fluorescent N, S co-doped carbon dots" Carbon Letters 34, no.2 (2024) : 851-863.doi: 10.1007/s42823-023-00666-1
