用酸回流法制备了荧光碳点,研究了碳点的光致发光行为对浓度的依赖关系,实验表明,碳点的光致发光性能可以通过碳点的浓度来调控,这将为碳点的应用提供新的途径。本文还结合碳点表面结构和形貌的表征,分析了浓度对碳点荧光行为的调控机制,为进一步澄清碳点的发光机制提供了一定的参考。
Fluorescent carbon dots were prepared by acid reflux method. The dependence of the photolumi-nescence (PL) behavior of the carbon dots with its concentration was studied. The results show that the PL properties of carbon dots can be tuned by its concentration. This will provide a new way for the application of carbon dots. Moreover, combing with the surface structure and morphology characterization of carbon dots, the modulation mechanism of concentration was analyzed, which can provide some reference for further clarifying the PL mechanism of carbon dots.
Xingyi Normal University for Nationalities, Xingyi Guizhou
Received: Feb. 22nd, 2021; accepted: Mar. 19th, 2021; published: Mar. 26th, 2021
ABSTRACT
Fluorescent carbon dots were prepared by acid reflux method. The dependence of the photoluminescence (PL) behavior of the carbon dots with its concentration was studied. The results show that the PL properties of carbon dots can be tuned by its concentration. This will provide a new way for the application of carbon dots. Moreover, combing with the surface structure and morphology characterization of carbon dots, the modulation mechanism of concentration was analyzed, which can provide some reference for further clarifying the PL mechanism of carbon dots.
汪鑫峰,王国丹,刘良进,彭旺,任驰宇,郝艳玲. 浓度调控的碳点荧光及其调控机制分析Concentration-Modulated Carbon Dots Photoluminescence and the Modulation Mechanism[J]. 现代物理, 2021, 11(02): 21-27. https://doi.org/10.12677/MP.2021.112004
参考文献ReferencesLi, H.T., Kang, Z.H., Liu, Y., et al. (2012) Carbon Nanodots: Synthesis, Properties and Applications. Journal of Mate-rials Chemistry, 22, 24230-24253. <br>https://doi.org/10.1039/c2jm34690gLim, S.Y., Shen, W. and Gao, Z.Q. (2015) Carbon Quantum Dots and Their Applications. Chemical Society Reviews, 44, 362-381. <br>https://doi.org/10.1039/C4CS00269ELin, S., Lin, C., He M.L., et al. (2017) Solvatochromism of Bright Carbon Dots with Tunable Long-Wavelength Emission from Green to Red and Their Application as Solid-State Materials for Warm WLEDs. RSC Advances, 7, 41552-41560. <br>https://doi.org/10.1039/C7RA07736JGan, Z.X., Hao, Y.L. and Shan, Y. (2016) Temperature-Dependent Dual Emission from Sucrose-Derived Carbon Nanodots: A Ratiometric Fluorescent Thermometer. ChemNanoMat, 2, 171-175. <br>https://doi.org/10.1002/cnma.201500228Qiao, Z.A., Wang, Y.F., Gao, Y., et al. (2010) Commercially Ac-tivated Carbon as the Source for Producing Multicolor Photoluminescent Carbon Dots by Chemical Oxidation. Chemical Communications, 46, 8812-8814.
<br>https://doi.org/10.1039/c0cc02724cHao, Y.L., Gan, Z.X., Zhu, X.B., et al. (2015) Emission from Trions in Carbon Quantum Dots. The Journal of Physical Chemistry C, 119, 2956-2962. <br>https://doi.org/10.1021/jp5114569Mu, Y., Wang, N., Sun, Z.C., et al. (2016) Carbogenic Nanodots Derived from Organotemplated Zeolites with Modulated Full-Color Luminescence. Chemical Science, 7, 3564-3568. <br>https://doi.org/10.1039/C6SC00085AMeng, X., Chang, Q., Xue, C.R., et al. (2017) Full-Colour Carbon Dots: From Energy-Efficient Synthesis to Concentration-Dependent Photoluminescence Properties. Chemical Communications, 53, 3074-3077.
<br>https://doi.org/10.1039/C7CC00461CChen, Y.Q., Lian, H.Z., Wei, Y., et al. (2018) Concentration-Induced Multi-Colored Emissions in Carbon Dots: Origination from Triple Fluorescent Centers. Nanoscale, 10, 6734-6743. <br>https://doi.org/10.1039/C8NR00204EWang, X., Xu, X.C., Yang, M., et al. (2019) Concentration-Tuned Multicolor Carbon Dots: Microwave-Assisted Synthesis, Characterization, Mechanism and Applications. New Journal of Chemistry, 43, 8950-8957.
<br>https://doi.org/10.1039/C9NJ01233H刘洪珍. 固态发光碳点的制备及其应用研究[D]: [博士学位论文]. 长春: 中国科学院长春光学精密机械与物理研究所, 2018.Miao, X., Qu, D., Yang, D., et al. (2018) Synthesis of Carbon Dots with Multiple Color Emission by Controlled Graphitization and Surface Functionalization. Advanced Materials, 30, Article ID: 1704740.
<br>https://doi.org/10.1002/adma.201704740Hao, Y.L. and Zhang, X. (2017) Carbon Dots Composite Solid Film and Its Tunable Fluorescence. Modern Physics, 7, 134-141. <br>https://doi.org/10.12677/MP.2017.74014郝艳玲, 张星. 具有双重荧光发射的碳量子点的制备及其荧光起源探讨[J]. 西北师范大学学报(自然科学版), 2017, 53(5): 34-40.Lai, S.Q., Jin, Y., Shi, L.J., et al. (2020) Mechanisms behind Excitation- and Concentration Dependent Multicolor Photoluminescence in Graphene Quantum Dots. Nanoscale, 12, 591-601. <br>https://doi.org/10.1039/C9NR08461DZhang, T.X., Zhu, J.Y., Zhai, Y., et al. (2017) A Novel Mechanism for Red Emission Carbon Dots: Hydrogen Bond Dominated Molecular States Emission. Nanoscale, 9, 13042-13051. <br>https://doi.org/10.1039/C7NR03570E孟勋. 煤基荧光碳点的制备及其性能调控[D]: [硕士学位论文]. 太原: 中北大学, 2017.