Application advances of carbon quantum dots in optoelectronic devices

Xu, Bingshe; Xu, Jiacong; Zheng, Jingxia; Yang, Yongzhen; Liu, Xuguang

doi:10.1360/n972019-00072

Cited by 4 publications

(3 citation statements)

References 33 publications

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“…These nanoclusters, with an average diameter of less than 10 nm, were first discovered by Xu et al In 2004 [ 6 ], Sun et al [ 7 ] were the first to produce and designate these fluorescent particles as CQDs. Their fluorescence property has found applications in various optoelectronic devices [ 8 , 9 , 10 ] and created opportunities for bioimaging, biosensing, and disease diagnosis [ 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. Because of the cost-effectiveness and energy efficiency of the fabrication techniques, together with the low toxicity of the CQDs, they can potentially replace industrial fluorescent dyes used in the medical sector for real-time bioimaging.…”

Section: Introductionmentioning

confidence: 99%

A Green Synthesis Route to Derive Carbon Quantum Dots for Bioimaging Cancer Cells

et al. 2023

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Carbon quantum dots (CQDs) are known for their biocompatibility and versatile applications in the biomedical sector. These CQDs retain high solubility, robust chemical inertness, facile modification, and good resistance to photobleaching, which makes them ideal for cell bioimaging. Many fabrication processes produce CQDs, but most require expensive equipment, toxic chemicals, and a long processing time. This study developed a facile and rapid toasting method to prepare CQDs using various slices of bread as precursors without any additional chemicals. This fast and cost-effective toasting method could produce CQDs within 2 h, compared with the 10 h process in the commonly used hydrothermal method. The CQDs derived from the toasting method could be used to bioimage two types of colon cancer cells, namely, CT-26 and HT-29, derived from mice and humans, respectively. Significantly, these CQDs from the rapid toasting method produced equally bright images as CQDs derived from the hydrothermal method.

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Section: Introductionmentioning

confidence: 99%

A Green Synthesis Route to Derive Carbon Quantum Dots for Bioimaging Cancer Cells

et al. 2023

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“…At the same time, with advances in sustainable development, garden plants must serve more than ornamental functions to meet people's needs for ecological safety and a better life (Al-hader et al 1994;Papiez et al 2009; Zhu et al 2019). Obtaining the germplasm resources of garden plants with ornamental, medicinal and health care value is an emerging direction in garden plant cultivation and application research (Qiao and Zhang 2012; Lin 2020; Xu et al 2022). Studies on the exploration and application of the resources of garden plants with medicinal and health care functions are focused not only on selecting ower seedlings with long owering periods and high ornamental value but also on identifying garden plants with high levels of medicinal or health care functions (Jia et al 2009; Tan and Gao 2017).…”

Section: Introductionmentioning

confidence: 99%

A rapid and effective method for obtaining ardicrenin from Ardisia crenata Sims var. bicolor plants

Lin¹,

Yang

et al. 2023

Braz. J. Bot

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Ardisia crenata Sims var. bicolor has high ornamental and medical value, especially because it contains the compound ardicrenin, which is a possible alternative drug for Taxol/camptothecin. To protect wild germplasm resources and obtain more ardicrenin, a plant regeneration system was established via calli, and ardicrenin content was quanti ed by reversed-phase high-performance liquid chromatography (RP-HPLC). The results showed that a Murashige and Skoog (MS) medium with 2,4-dichlorophenoxyacetic acid (2,4-D, 1.0 mg L − 1 ) and kinetin (KT, 0.01 mg L − 1 ) was suitable for callus induction, with an induction rate of 95.31 ± 1.62%; a MS medium with 2,4-D (0.5 mg L − 1 ) and 6-benzylaminopurine (6-BA, 0.2 mg L − 1 ) was suitable for callus multiplication, with a multiplication coe cient of 359.26; a MS medium with 6-BA (1.0 mg L − 1 ) and 1-naphthaleneacetic acid (NAA, 0.5 mg L − 1 ) was suitable for callus differentiation, with a differentiation rate of 89.36 ± 1.39%; and 1/2 MS with indole-3-butyric acid (IBA, 0.2 mg L − 1 ) was suitable for rooting, with a rooting rate of 93.74 ± 1.38%. Additionally, garden soil: vermiculite: perlite (v: v: v = 1:1:1) was appropriate for acclimatization and transplanting, with a survival rate of 87.38%. RP-HPLC analysis revealed that the ardicrenin content in one-month-old plantlets was higher than that in one-year-old plants and was nearly the same as the content observed in three-year-old plants and two-month-old transplanted plantlets, especially in the roots (17.69 mg g − 1 DW, 1.77% DW). In summary, a rapid propagation system for A. crenata Sims var. bicolor was successfully established for the rst time, and the roots of one-month-old plantlets were used to effectively obtain ardicrenin.

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“…The QDs possess various advanced properties, including outstanding photoluminescence, excellent quantum yield, resistance to photobleaching, tunable emission spectrum, and broad excitation spectra, making them good candidates for on-site monitoring and bioimaging. [41,[78][79][80][81][82][83][84][85][86] Moreover, the small dimensions and facile surface engineering endow them with good biocompatibility and biometabolic trait. In addition, they have the capacity to form sensing elements and antibacterial composites for the bacterial detecting and combating.…”

Section: Introductionmentioning

confidence: 99%

Quantum Dots for Pathogenic Bacterial Monitoring and Combating

Liu

Zhang

2022

Advanced Optical Materials

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including neonatal meningitis, [6] diarrhoea, [7] infected cutaneous wound [8] or bloodstream diseases, [9][10][11] etc. Antibiotic treatment strategies against these bacteria have been widely applied while antimicrobial resistance has been arousing gradually. [12][13][14][15][16][17] What is worse, the biofilmrelated infection has been a tough issue for bacterial infectious treatment since it is usually chronic and much harder to eradicate. [18][19][20] Therefore, effective antibacterial treatments for drug-resistant pathogenic bacteria are vital problems for clinical therapy. [21] Some anti-microbial trials were carried out like phages, bacteriocins, and antimicrobial peptides [22] along with various therapeutic methods. [23][24][25] Among them, nanomaterials are considered as compatible solutions [23,26] due to their facile synthesis methods and rich-sourced precursors, broad-spectrum sterilization, and low drug resistance. [27][28][29][30][31] Nanomaterials are generally easy to be modified or doped to enhance the affinity toward bacteria for the sake of combating or drug delivery. [32][33][34][35] The antibacterial mechanism [36,37] could be result from the sharp edges-based physical cutting, [38,39] photothermal effects, [40][41][42] and photo dynamic or chemical dynamic properties, that could produce reactive oxygen species (ROS).Pathogenic bacteria monitoring mainly conducted by culturing them in agar-based media, and subsequently testing them with biochemical probes. [43][44][45][46] Although this conventional method enables clinical diagnoses with relatively reliable outcomes, the long culturing time renders the "golden therapeutical window" for patients. So more rapid and accurate detecting technologies have been invented. One of the most evolutionary methods is the polymerase chain reaction, [47][48][49] which can identify the bacterial classification and provide gene expression level in a few hours with better accuracy. [47,50] Besides, the coupling of chromatography and mass spectra like matrix-assisted laser desorption ionization time-of-flight mass spectrometry [51][52][53][54][55] can play a more exact role in diagnosis. [56] Though these advanced instrumental-relied methods can lead to fast diagnostic, the expensive apparatus, environmentally unfriendly reagents, [57] professional sites and technical personnel requirements limited their utilization in real-time monitoring and point-of-care sensing. By contrast, easy and fast monitoring methods for the pathogen, such as electrochemical and fluorescence sensors, were brought out as powerful supplements. [58][59][60][61][62] Therein, Antibiotic resistance and pathogenic bacterial monitoring are two main challenges in clinical diagnostics and treatment of bacteria. To conquer those issues, many new materials and novel technologies are explored. Among them, quantum dots (QDs) are regarded as not only powerful bacteriostatic agents, but also bacterial monitoring probes due to their excellent photoluminescence properties, tunable multiwavelength lumine...

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Application advances of carbon quantum dots in optoelectronic devices

Abstract: Photo-stability of CsPbBr 3 perovskite quantum dots for optoelectronic application SCIENCE CHINA Materials 59, 719 (2016); Kondo effect in quantum dots and molecular devices

Cited by 4 publications

References 33 publications

A Green Synthesis Route to Derive Carbon Quantum Dots for Bioimaging Cancer Cells

A Green Synthesis Route to Derive Carbon Quantum Dots for Bioimaging Cancer Cells

A rapid and effective method for obtaining ardicrenin from Ardisia crenata Sims var. bicolor plants

Quantum Dots for Pathogenic Bacterial Monitoring and Combating

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