Formation of N, S-codoped fluorescent carbon dots from biomass and their application for the selective detection of mercury and iron ion

Ye, Qianghua; Yan, Fanyong; Luo, Yunbai; Wang, Yinyin; Zhou, Xiaowen; Chen, Li

doi:10.1016/j.saa.2016.10.039

Cited by 144 publications

(73 citation statements)

References 34 publications

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“…Ye et al. prepare NCDs by using a one‐pot pyrolytic carbonization method, with pigeon feathers, eggs, and manure as the biomass and no additional reagents (Figure c) . Eggs contain nitrogen and feathers are rich in sulfur‐containing amino acids, so the NCDs prepared from these biomaterials are co‐doped with nitrogen and sulfur.…”

Section: Methods For the Synthesis Of Ncdsmentioning

confidence: 99%

Natural‐Product‐Derived Carbon Dots: From Natural Products to Functional Materials

et al. 2017

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Nature provides an almost limitless supply of sources that inspire scientists to develop new materials with novel applications and less of an environmental impact. Recently, much attention has been focused on preparing natural‐product‐derived carbon dots (NCDs), because natural products have several advantages. First, natural products are renewable and have good biocompatibility. Second, natural products contain heteroatoms, which facilitate the fabrication of heteroatom‐doped NCDs without the addition of an external heteroatom source. Finally, some natural products can be used to prepare NCDs in ways that are very green and simple relative to traditional methods for the preparation of carbon dots from man‐made carbon sources. NCDs have shown tremendous potential in many fields, including biosensing, bioimaging, optoelectronics, and photocatalysis. This Review addresses recent progress in the synthesis, properties, and applications of NCDs. The challenges and future direction of research on NCD‐based materials in this booming field are also discussed.

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Section: Methods For the Synthesis Of Ncdsmentioning

confidence: 99%

Natural‐Product‐Derived Carbon Dots: From Natural Products to Functional Materials

et al. 2017

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“…[11] In the past decade, fluorescent carbon dots (CDs) have been widely developed through pyrolysis of CA with or without amine based molecules. [12, 13–15] These citrate-based CDs, when compared with traditional fluorescent agents, possess numerous advantages, including biocompatibility, straightforward synthesis, and strong fluorescence with adjustable emission spectra (from blue to NIR). [16–20] Researchers have proposed that the fluorescence performance of citrate-based CDs can be attributed to both their carbon cores and small molecular fluorophores.…”

Section: Introductionmentioning

confidence: 99%

Citrate‐Based Fluorescent Biomaterials

Shan

Hsieh

Bai

et al. 2018

Adv Healthcare Materials

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Fluorescence imaging has emerged as a promising technique for monitoring and assessing various biologically relevant species in cells and organisms, driving the demand for effective fluorescent agents with good biocompatibility and high fluorescence performance. However, traditional fluorescent agents, such as quantum dots (QDs) and organic dyes, either suffer from toxicity concerns or poor fluorescence performance (e.g., low photobleaching-resistance). In this regard, citrate-based fluorescent biomaterials, which are synthesized from the natural and biocompatible precursor of citric acid (CA), have become competitive alternatives for fluorescence imaging owing to their biocompatibility, cost effectiveness, straightforward synthetic routes, flexible designability, as well as strong fluorescence with adjustable excitation/emission wavelengths. Accordingly, numerous citrate-based biomaterials, including carbon dots (CDs), biodegradable photoluminescent polymers (BPLPs), and small molecular fluorophores, have been developed and researched in the past few decades. This review discusses recent progress in the research and development of citrate-based fluorescent materials with emphasis on their design and synthesis considerations, material properties, fluorescence properties and mechanisms, as well as biomedical applications. It is expected that this review will provide an insightful discussion on the citrate-based fluorescent biomaterials, and lead to innovations for the next generation of fluorescent biomaterials and fluorescence-based biomedical technology.

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“…Here, only Cu 2+ could effectively reduce the fluorescence intensity, which could be attributed to the selective complexation interaction between Cu 2+ and carboxyl and amino groups of the N‐CDs. The special complexation interaction affected the aromatic ring structure and the nonradiative recombination of the N‐CDs and formed Cu–N‐CD complexes also made the N‐CD particles close to each other, which led to significant fluorescence quenching effects . In order to testify whether the aromatic C–N heterocycle structure and amino groups influenced the selective fluorescence sensing of Cu 2+ , the control experiment was developed to study the fluorescence responses of the prepared CDs without N atom dopants toward Cu 2+ and other metal ions.…”

Section: Resultsmentioning

confidence: 99%

Crown daisy leaf waste–derived carbon dots: A simple and green fluorescent probe for copper ion

Wang

et al. 2019

Surface & Interface Analysis

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In this paper, N‐doped carbon quantum dots (N‐CDs) were fabricated using crown daisy leaves, a kitchen waste, as carbon source. The synthesized N‐CDs possessed abundant surface functional groups, such as hydroxyl, carboxyl, and amino groups, and had good dispersibility in water. Because of the special fluorescence quenching property toward Cu2+, the synthesized N‐CDs can be exploited as an effective label‐free fluorescent probe for Cu2+ determination. The possible fluorescence sensing mechanism considered the selective coordination interaction between Cu2+ ion and the hydroxyl, carboxyl, and amino groups of the N‐CDs. The control experiments also showed that the N‐doped aromatic C–N heterocycle structure played a crucial role in selective sensing of Cu2+. The decrease in fluorescence efficiencies was linearly related with the Cu2+ concentrations in the range of 10.0nM to 120.0nM, with a response limit of 1.0nM. The prepared probe was also applied for Cu2+ determination in real river water.

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Formation of N, S-codoped fluorescent carbon dots from biomass and their application for the selective detection of mercury and iron ion

Cited by 144 publications

References 34 publications

Natural‐Product‐Derived Carbon Dots: From Natural Products to Functional Materials

Natural‐Product‐Derived Carbon Dots: From Natural Products to Functional Materials

Citrate‐Based Fluorescent Biomaterials

Crown daisy leaf waste–derived carbon dots: A simple and green fluorescent probe for copper ion

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