Hybrid carbon source for producing nitrogen-doped polymer nanodots: one-pot hydrothermal synthesis, fluorescence enhancement and highly selective detection of Fe(iii)

Lai, Tiantian; Zheng, Enhui; Chen, Lixian; Wang, Xuyang; Kong, Lichun; You, Chunping; Ruan, Yongming; Weng, Xuexiang

doi:10.1039/c3nr02014b

Cited by 135 publications

(110 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The 13 C NMR spectrum of the L-TA-NFNPs displayed three groups of peaks: 36-40, 72-75, and 160-180 ppm (Fig. S3), which could be assigned to methylene carbons stemmed from ethylenediamine, carbons adjacent to the carbonyl group stemmed from tartaric acid, and carbons in the carbonyl group or the newly formed conjugated structure, respectively.…”

Section: Nfnps Derived From Tartaric Acid and Ethylenediaminementioning

confidence: 99%

See 1 more Smart Citation

One-step fabrication of nitrogen-doped fluorescent nanoparticles from non-conjugated natural products and their temperature-sensing and bioimaging applications

Zeng

Yang

et al. 2015

Sensing and Bio-Sensing Research

View full text Add to dashboard Cite

a b s t r a c tA facile solvothermal method was used to prepare N-doped fluorescent nanoparticles (NFNPs) at gram scale from tartaric acid/citric acid/ethylenediamine using oleic acid as the reaction medium. The quantum yield of the obtained fluorescent nanoparticles could reach 48.7%. The NFNPs were characterized by multiple analytical techniques. By combining with the circular dichroism (CD) spectra, the structure and the origin of photoluminescence of the NFNPs were discussed. The fluorescent intensity of the obtained NFNPs had remarkable stability, and exhibited a reversible temperature-dependent enhancement/quenching. The products with low cytotoxicity could be introduced into the target cells for in vitro bioimaging.

show abstract

Section: Nfnps Derived From Tartaric Acid and Ethylenediaminementioning

confidence: 99%

“…When passivated with polymer chains or doped with heteroatoms, the quantum yield of the carbon nanoparticles could be greatly improved [7][8][9]13,18,27,28,37,39]. Heteroatom-doped carbogenic nanoparticles have attracted much attention of people very recently because of their high quantum yield and desirable diversity.…”

Section: Introductionmentioning

confidence: 99%

One-step fabrication of nitrogen-doped fluorescent nanoparticles from non-conjugated natural products and their temperature-sensing and bioimaging applications

Zeng

Yang

et al. 2015

Sensing and Bio-Sensing Research

View full text Add to dashboard Cite

show abstract

“…Up to now, masses of efforts has been made to prepare nitrogen-doped, sulfur-doped or nitrogen-and sulfur-co-doped C-dots from natural biomass, peptide, amino acid and other small molecule, such as garlic [22], goose [23], grapefruit peel [24], hair fiber [25], cocoon silk [26] thioglycolic acid [27] and the mixture of glucose and glycine [28].Compared to bare C-dots, nitrogen-doped C-dots might not only improve fluorescence properties but also allow to apply available functional groups for target sensing. The report about nitrogen and sulfur co-doped C-dots obtained by hydrothermal treatment of citric acid and L-cysteine indicated its excellent fluorescent property was ascribed to the doping changing surface state facilitating a high yield of radiative recombination [29].…”

Section: Introductionmentioning

confidence: 99%

Dual functional N- and S-co-doped carbon dots as the sensor for temperature and Fe3+ ions

Cui

Wang

Liu

et al. 2017

Sensors and Actuators B: Chemical

184

View full text Add to dashboard Cite

“…The nitrogen-doped carbon dots must be having some co-ordination interaction with Fe(III) because of the occurrence of electron-rich nitrogen atom in the structure. This could result in nonradiative electron transfer between them which can cause a substantial quenching of photoluminescence of carbon dots 41,42 . This electron transfer process plays a major role for the significant quenching of C.dots fluorescence.…”

mentioning

confidence: 99%

One-Step Microwave-Assisted Green Synthesis of Luminescent N-Doped Carbon Dots from Sesame Seeds for Selective Sensing of Fe(III)

Roshni¹,

Divya²

2017

Current Science

View full text Add to dashboard Cite

The present study focuses on the green synthesis of nitrogen-doped carbon dots (C.dots) from sesame seeds using microwave pyrolysis method. The C.dots obtained were characterized and extensively studied using transmission electron microscopy (TEM), UV/ visible spectroscopy, fluorescence spectroscopy and Fourier transform infra-red spectroscopy (FTIR) techniques. The results indicated the presence of highly fluorescent, aqueous soluble and significantly photostable C.dots with a quantum yield of 8.02%. The average size distributions of C.dots were found to be 5 nm. These C.dots were effectively applied as a selective sensor for Fe(III) as the fluorescence intensity was significantly quenched with increasing metal concentrations. The limit of detection (LOD) was found to be 2.56 M of Fe(III). This study demonstrates a low cost, environmental friendly and waste recyclable synthetic method for preparation of C.dots and its application as a selective Fe(III) sensor.Keywords: Carbon dots, fluorescence, sesame seeds, microwave pyrolysis, metal ions, quenching.CARBON DOTS (C.dots) are gaining increasing attention within the carbon nanomaterial family due to their varied applications in biological, sensing, optical and electrical fields 1-3 . They are swiftly replacing the conventional semiconductor nanoparticles (Q.dots) which have raised serious health and environmental concerns because of the presence of heavy metals in it 4 . C.dots are spherical, oxygenous carbon nanoparticles with size below 10 nm. C.dots akin to Q.dots show several interesting properties such as excitation-dependent emission, chemical and photostability, enhanced fluorescence quantum yields and the possibility of fine-tuning the sensing properties by surface modification [5][6][7][8][9][10][11] In order to improve the photophysical and photochemical properties of C.dots, hetero-atom doped C.dots are synthesized by different ways. Among them, nitrogendoped C.dots received much attention because of their good biocompatibility and the related broad applications in the areas of bio-imaging, electrocatalysis and sensors 25,26 . However, most of the synthesis methods reported so far have either a long reaction time or a need of extra chemicals for doping. Thus, synthesizing Ndoped C.dots in a cost effective and ecofriendly manner and using them for sensing applications, especially for biologically active and environmentally hazardous metal ions will be highly beneficial.Iron is an essential element for many biological processes 27 . The presence of iron in body either at higher levels or at lower levels can lead to several problems which eventually disturbs the lipid metabolism and glucose levels 28 . Therefore, quantitative determination of bioactive iron is an important health care challenge. Some studies have already been reported in this direction; Qian et al. 29 used the N-doped C.dots for detection of Fe(III). Wang et al. 30 used a wide variety of green carbonaceous precursors like milk, silk, honey, hair, lemon, etc. to detect Fe(III).The pre...

show abstract

Hybrid carbon source for producing nitrogen-doped polymer nanodots: one-pot hydrothermal synthesis, fluorescence enhancement and highly selective detection of Fe(iii)

Cited by 135 publications

References 34 publications

One-step fabrication of nitrogen-doped fluorescent nanoparticles from non-conjugated natural products and their temperature-sensing and bioimaging applications

One-step fabrication of nitrogen-doped fluorescent nanoparticles from non-conjugated natural products and their temperature-sensing and bioimaging applications

Dual functional N- and S-co-doped carbon dots as the sensor for temperature and Fe3+ ions

One-Step Microwave-Assisted Green Synthesis of Luminescent N-Doped Carbon Dots from Sesame Seeds for Selective Sensing of Fe(III)

Contact Info

Product

Resources

About