Insecticide as a precursor to prepare highly bright carbon dots for patterns printing and bioimaging: A new pathway for making poison profitable

Zou, Wen-Sheng; Ji, Yajun; Wang, Xiufang; Zhao, Qingchun; Zhang, Jun; Shao, Qun; Liu, Jin; Wang, Feng; Wang, Yaqin

doi:10.1016/j.cej.2016.03.004

Cited by 46 publications

(20 citation statements)

References 64 publications

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“…CDs are used as an excellent fluorescent bio-imaging agent due to their broad absorption spectrum, narrow emission spectrum, adjustable photoluminescence, good chemical stability, and light stability, and photobleaching resistance [85,86]. Compared with QDs and noble MNCs, CDs have the advantages of low toxicity, good biocompatibility, low cost, facile synthesis, easy surface modification, and large-scale preparation [86][87][88][89][90]. The physical and chemical properties of CDs can be controlled by the reactants, reaction products, and reaction by-products [86].…”

Section: Cds In Biotargeting and Bioimagingmentioning

confidence: 99%

Biological nanoscale fluorescent probes: From structure and performance to bioimaging

Wan

Zhang

et al. 2020

Reviews in Analytical Chemistry

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In recent years, nanomaterials have attracted lots of attention from researchers due to their unique properties. Nanometer fluorescent materials, such as organic dyes, semiconductor quantum dots (QDs), metal nano-clusters (MNCs), carbon dots (CDs), etc., are widely used in biological imaging due to their high sensitivity, short response time, and excellent accuracy. Nanometer fluorescent probes can not only perform in vitro imaging of organisms but also achieve in vivo imaging. This provides medical staff with great convenience in cancer treatment. Combined with contemporary medical methods, faster and more effective treatment of cancer is achievable. This article explains the response mechanism of three-nanometer fluorescent probes: the principle of induced electron transfer (PET), the principle of fluorescence resonance energy transfer (FRET), and the principle of intramolecular charge transfer (ICT), showing the semiconductor QDs, precious MNCs, and CDs. The excellent performance of the three kinds of nano fluorescent materials in biological imaging is highlighted, and the application of these three kinds of nano fluorescent probes in targeted biological imaging is also introduced. Nanometer fluorescent materials will show their significance in the field of biomedicine.

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Section: Cds In Biotargeting and Bioimagingmentioning

confidence: 99%

Biological nanoscale fluorescent probes: From structure and performance to bioimaging

Wan

Zhang

et al. 2020

Reviews in Analytical Chemistry

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“…The brominated/iodinated dyes were selected as precursors, and dehydrohalide reaction and Yamamoto reaction simultaneously occurred among halogenated precursors during the carbonization process. The heavy atom effect was inevitably eliminated or weakened, resulting in the extremely weak phosphorescence of 5I-C-dots and 5Br-C-dots, and can be “observed” only by the special apparatus. , This indicated that the amorphization strategy is generally applicable to the design and preparation of matrix-free RTP C-dots.…”

Section: Resultsmentioning

confidence: 99%

“…The heavy atom effect was inevitably eliminated or weakened, resulting in the extremely weak phosphorescence of 5I-C-dots and 5Br-Cdots, and can be "observed" only by the special apparatus. 52,72 This indicated that the amorphization strategy is generally applicable to the design and preparation of matrix-free RTP Cdots.…”

Section: Rtp Emission Of the C-dot Powdermentioning

confidence: 99%

Amorphization of Purely Organic Phosphors into Carbon Dots to Activate Matrix-Free Room-Temperature Phosphorescence for Multiple Applications

Zou

Chen

Lin

et al. 2021

ACS Appl. Electron. Mater.

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The insufficiency of effectively activating purely organic phosphorescence has greatly limited the development and application of purely organic phosphors. Herein, amorphization of purely organic phosphors into carbon dots (C-dots), namely, amorphization strategy, was designed for activating matrix-free room-temperature phosphorescence (RTP) of C-dots. Using citric acid and 2,4,6-trihydrazinyl-1,3,5-triazine (THT) as precursors, the obtained C-dots reserved the ordered structure similar to a THT single crystal in the interior of C-dots. The doped triazine overing is critical for RTP; it not only provides the n–π* transition center but also plays a key role in facilitating the intersystem crossing. The weak interactions among THT molecules, such as π···π stacking and hydrogen bond interactions, and the hydrogen bond among functional groups in the interior of C-dots, together with the steric hindrance formed by polymer-like structures of C-dots, served as matrices to embed and immobilize the emissive center, resulting in the afterglow with a lifetime of 66.4 ms. C-dot-based RTP was successfully used for digital encryption, information protection, and antibacterial protection. Most importantly, the universality of the amorphization strategy provided a simple and advantageous pathway for the activation of C-dot-based matrix-free RTP.

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“…No morphological damage was observed in the cells after incubation with the CQDs, which signified their low cytotoxicity. 316 Plants, fruits and food products such as orange juice, 317 apple juice, 318 gelatin, 319 milk, 320 soy milk, 321 honey, 322 and egg 117 have all been used as a carbon source for the preparation of CQDs. It is thought that the use of natural products and foodstuffs may lead to lower toxicity of the resultant CQDs for biomedical applications.…”

Section: O-dots As a Theranostic Platformmentioning

confidence: 99%

Organic dots (O-dots) for theranostic applications: preparation and surface engineering

et al. 2021

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Insecticide as a precursor to prepare highly bright carbon dots for patterns printing and bioimaging: A new pathway for making poison profitable

Cited by 46 publications

References 64 publications

Biological nanoscale fluorescent probes: From structure and performance to bioimaging

Biological nanoscale fluorescent probes: From structure and performance to bioimaging

Amorphization of Purely Organic Phosphors into Carbon Dots to Activate Matrix-Free Room-Temperature Phosphorescence for Multiple Applications

Organic dots (O-dots) for theranostic applications: preparation and surface engineering

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