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基于钝化剂-还原剂协同效应的绿色发射碳点一步法制备及其发光机理研究

The one-step preparation of green-emission carbon dots based on the deactivator-reducing reagent synergistic effect and the study on their luminescence mechanism.

作者信息

Wei Chunjin, Li Jun, Xiao Xincai, Yue Tong, Zhao Dan

机构信息

School of Pharmaceutical Sciences, South-Central University for Nationalities Wuhan 430074 P. R. China

National Demonstration Center for Experimental Ethnopharmacology Education (South-Central University for Nationalities) Wuhan 430074 P. R. China.

出版信息

RSC Adv. 2018 May 31;8(36):20016-20024. doi: 10.1039/c8ra03353f. eCollection 2018 May 30.

DOI:10.1039/c8ra03353f
PMID:35541644
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9080747/
Abstract

The preparation of high-quality green-emission carbon dots (g-CDs) has always been the hot spot in the field of nano-materials. This paper reports the synthesis of high-quality g-CDs based on the synergistic effect between the deactivator (polyethyleneimine) and the reducing reagent (citric acid). The emission wavelength and the fluorescence intensity of the prepared CDs are adjustable by controlling the ratio of raw materials and other synthesis parameters, with quantum yields of 22.2% under optimal conditions. The g-CDs can be used as a fluorescent ink without any chemical modification. This paper further proposes the synthesis mechanism as well as the fluorescence mechanism of CDs based on the synergistic effect, laying the foundation of the synthesis and research of CDs.

摘要

高质量绿色发射碳点（g-CDs）的制备一直是纳米材料领域的研究热点。本文报道了基于钝化剂（聚乙烯亚胺）与还原剂（柠檬酸）之间的协同效应合成高质量g-CDs的方法。通过控制原料比例和其他合成参数，所制备碳点的发射波长和荧光强度可调，在最佳条件下量子产率为22.2%。该g-CDs无需任何化学修饰即可用作荧光墨水。本文基于协同效应进一步提出了碳点的合成机理以及荧光机理，为碳点的合成与研究奠定了基础。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6dd0/9080747/e1badca8fdd7/c8ra03353f-f7.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6dd0/9080747/0b1f6f50b2db/c8ra03353f-f5.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6dd0/9080747/e1badca8fdd7/c8ra03353f-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6dd0/9080747/e8ead57ac923/c8ra03353f-f1.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/6dd0/9080747/e1badca8fdd7/c8ra03353f-f7.jpg

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