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| 1 | Ethanol-derived white emissive carbon dots:The formation process investigation and multi-color/white LEDs preparation显示文摘Carbon dots(CDs)have attracted much attention due to their excellent photoelectric properties and potential applications.Although previous studies have shown that almost all organic molecules can be converted into CDs via chemical carbonization,the mechanism of the conversion process remains unclear.The hydrothermal/solvothermal method commonly used to prepare CDs is complicated and leads to the generation of many by-product CDs with similar structures.Considering that the purification of the synthesized by-products is difficult,the process of CDs formation cannot be readily analyzed and understood.Herein,we use ethanol as a carbon source to synthesize white-emitting CDs(W-CDs).Column chromatography separation shows that the synthesized W-CDs are composed of blue-,cyan-,and yellow-emitting CDs that fluoresce at wavelengths corresponding to the three emission centers of W-CDs.Although the samples have similar graphitic structure,they exhibit different surface states due to variations in the degree of oxidation and carbonization.Therefore,the red-shift in their emission peaks is attributed to an increased degree of carbonization in their polymer structure.Theoretical calculations verify the experimental results,and the prepared CDs are successfully used to develop multi-color and white light-emitting diodes(LEDs). | Boyang Wang Haoqiang Song Zhiyong Tang Bai Yang Siyu Lu | 2022 | Nano Research2022，15，2： | 5 |
| 2 | 单激发双发射氮掺杂碳量子点的制备及其在生物成像和荧光油墨中的应用显示文摘以L-苹果酸为碳源、3,3′-二氨基二丙胺和氟化铵为氮源,通过简单的水热法一步合成了稳定性好且具有单激发双发射荧光特性的氮掺杂碳量子点(Nitrogen-doped carbon quantum dots,N-CDs)。透射电子显微镜(TEM)、傅立叶变换红外光谱(FT-IR)、X射线粉末衍射光谱(XRD)表征结果表明,该N-CDs具有良好的分散性和水溶性、平均粒径约为3.3 nm,测得的晶格常数为0.27 nm,这与石墨烯量子点(002)晶面的晶面间距匹配较好。进一步的荧光测试表明,最大激发波长350 nm,最大发射波长为425 nm和850 nm。用硫酸奎宁做参比测得荧光量子产率为17.5%。研究发现该N-CDs具有出色的光学、酸碱、抗盐和抗生物小分子的稳定性,已成功应用于生物成像领域或是作为荧光油墨用于成像。 | 张长波 何文柔 田丰玲 姜丽 易伟 唐珊 吴韵 王兴益 张仟春 | 2022 | 贵州师范大学学报(自然科学版)2022，40，4： | 3 |
| 3 | 碳点的合成与应用研究进展显示文摘碳点是一类零维荧光碳纳米材料,其尺寸通常在20 nm以内,由于其良好的生物相容性,发射光谱可调性,发光稳定性等优势,从而在化学与生物等领域起到了重要作用。本文综述了碳点材料的合成方法及其在传感、生物成像、催化、发光太阳能集光器等应用上的研究进展,并对碳点材料的发展进行了展望。 | 魏来 涂小进 戴思芮 王建颖 | 2023 | 胶体与聚合物2023，41，1： | 2 |
| 4 | Solvent-controlled synthesis strategy of multicolor emission carbon dots and its applications in sensing and light-emitting devices显示文摘Carbon dots(CDs),as a new kind of carbon-based luminescent nanomaterials,have drawn widespread attention in the fields of fluorescence sensing,optoelectronic devices,and biological imaging.This work uses citric acid(CA)and Nile Blue A(NBA)as precursors.By simply changing the solvent in the reaction,their bandgaps were systematically controlled,thereby successfully obtaining bright blue,yellow and red fluorescence emission CDs(B-,Y-and RCDs).The higher quantum yield(QY)of B-,Y-and RCDs are 64%,57%and 51%,respectively.The selected precursors and different solvents are the key to the formation of three emission CDs.Detailed characterization and density functional theory(DFT)calculations further indicate that the difference in emission color of CDs is due to the size of the sp^(2) conjugate domain.In addition,we used multicolor CDs as fluorescent probes to investigate their performance in detection.Among them,BCDs and YCDs can detect Sudan Red I with high selectivity and sensitivity.In the concentration range of 0 to 80 pM,the detection limits are 56 and 41 nM,respectively.Multicolor emitting phosphors and fluorescent films are also obtained by mixing CDs with other matrices.Using Ultraviolet(UV)chip as the excitation source and combining with multicolor fluorescent film and a certain proportion of B-,Y-,and RCDs/epoxy resin composites,bright monochromatic light-emitting diodes(LEDs)and white LED(WLED)with high color rendering index(CRI)were prepared.The above results indicate that the multicolor CDs prepared by us have great application potential in the fields of food safety control and optical devices. | Zhonghui Sun Fanyong Yan Jing Xu Hao Zhang Li Chen | 2022 | Nano Research2022，15，1： | 1 |
| 5 | Carbon-Dot-Enhanced Electrocatalytic Hydrogen Evolution显示文摘CONSPECTUS:Hydrogen evolution by the electrolysis of water is an important energy conversion process,especially for some intermittent energy systems.However,its practical applicability is limited by its low energy-conversion efficiency and the need for expensive electrocatalysts.In response,carbon-based nanocomposites have gained substantial interest as promising alternatives to the currently used precious metal catalysts.Among them,carbon dots(CDs)have exhibited many outstanding features,including flexible composition,high conductivity,good dispersion,and strong metal coordination.The past decade has seen remarkable advances in CD-based electrocatalysts for hydrogen evolution,where CDs and their derived hybrids have shown impressive performance and indispensable prospects for future hydrogen utilization.However,the widespread use of CD-based electrocatalysts still requires the development of high-quality CDs and advanced synthesis strategies.New assessment techniques are also required to elucidate the unique functions of CDs in composition regulation,structure fabrication,surface modification,and host−guest interactions in electrocatalysts and ultimately to establish the relationships among structure,composition,and activity. | Han Wu Siyu Lu Bai Yang | 2022 | Accounts of Materials Research2022，3，3： | 1 |
| 6 | 碳点及其化学发光特性在生物检测中的应用显示文摘碳点(CDs)是一类新兴的纳米材料,尺寸较小,具有良好的光致发光性质、物理化学性质、光稳定性和生物相容性,在生物检测领域具有巨大的应用潜力。化学发光(CL)作为光发射的重要途径之一,在化学检测、生物分析和冷光源等方面的潜在应用,引起了人们的广泛兴趣。传统的CL研究多年,取得了许多研究成果。近年来,纳米材料的迅速发展为CL分析提供了新的发展机遇,将纳米材料引入到液相CL的研究,为CL方法注入了新的活力,已成为当前CL分析的一个研究热点。本文综述了近些年来CDs的合成方法和性质及其在生物检测方面的应用。 | 王志强 吴静 | 2023 | 分析试验室2023，42，3： | 0 |
| 7 | Controllable Photoelectric Properties of Carbon Dots and Their Application in Organic Solar Cells显示文摘Organic solar cells are a current research hotspot in the energy field because of their advantages of lightness,translucency,roll to roll printing and building integration.With the rapid development of small molecule acceptor materials with high-performance,the efficiency of organic solar cells has been greatly improved.Further improving the device efficiency and stability and reducing the cost of active layer materials will contribute to the industrial development of organic solar cells.As a novel type of carbon nanomaterials,carbon dots gradually show great application potential in the field of organic solar cells due to their advantages of low preparation cost,non-toxicity and excellent photoelectric performance.Firstly,the synthesis and classification of carbon dots are briefly introduced.Secondly,the photoelectric properties of carbon dots and their adjusting,including adjustable surface energy level structure,good film-forming performance and up/down conversion characteristics are summarized.Thirdly,based on these intrinsic properties,the feasibility and advantages of carbon dots used in organic solar cells are discussed.Fourthly,the application progress of carbon dots in the active layer,hole transport layer,electron transport layer,interface modification layer and down-conversion materials of organic solar cells is also reviewed.Finally,the application progress of carbon dots in organic solar cells is prospected.Several further research directions,including in-depth exploration of the controllable preparation of carbon dots and their application in the fields of interface layer and up/down conversion for improving efficiency and stability of device are pointed out. | Wen-Sheng Zhao Xin-Xin Li Han Zha Yong-Zhen Yang Ling-Peng Yan Qun Luo Xu-Guang Liu Hua Wang Chang-Qi Ma Bing-She Xu | 2022 | Chinese Journal of Polymer Science2022，40，1： | 0 |
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