Hydrothermal Preparation and Application of Oil-soluble Carbon Dots with High Ultraviolet-short-wave Blue Light Shielding

doi:10.19894/j.issn.1000-0518.220056

Chinese Journal of Applied Chemistry ›› 2023, Vol. 40 ›› Issue (1): 59-68.DOI: 10.19894/j.issn.1000-0518.220056

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Hydrothermal Preparation and Application of Oil-soluble Carbon Dots with High Ultraviolet-short-wave Blue Light Shielding

Rui-Zhe WANG¹^,², Guang-Qi HU¹^,², Wei-Hao YE¹^,², Chao-Fan HU¹^,², Jian-Le ZHUANG¹^,², Bing-Fu LEI¹^,², Wei LI¹^,², Ying-Liang LIU¹^,²()

^1.Key Laboratory for Biobased Materials and Energy of Ministry of Education/Guangdong Provincial Engineering Technology Research Center for Optical Agriculture，College of Materials and Energy，South China Agricultural University，Guangzhou 510642，China
^2.College of Photoelectric Engineering，Guangdong Polytechnic Normal University，Guangzhou 510665，China

Received:2022-03-04 Accepted:2022-09-15 Published:2023-01-01 Online:2023-01-28
Contact: Ying-Liang LIU
About author:tliuyl@scau.edu.cn
Supported by:
the National Natural Science Foundation of China(12174119);Guangzhou Science and Technology Program(202103000059)

Abstract

Abstract:

Using 2-hydroxy-4-methoxybenzophenone as carbon source and ethylenediamine as nitrogen source， an oil-soluble nitrogen doped carbon dots （CDs） with dual absorption of ultraviolet and short-wave blue light is synthesized by hydrothermal method. The composite lens material with ultraviolet light and short-wave blue light shielding effect is prepared by compounding CDs with polymethyl methacrylate. When the mass fraction of CDs is 1%， the average transmittance of the composite lens in the ultraviolet region is 0%， the average transmittance in the short-wave blue light region is 1.6%， and the absorption efficiency is 99.6%. It is a strong anti-ultraviolet-short-wave blue light material.

Key words: Oil-soluble carbon dots, UV absorption, Short-wave blue light absorption

CLC Number:

O613.7

Rui-Zhe WANG, Guang-Qi HU, Wei-Hao YE, Chao-Fan HU, Jian-Le ZHUANG, Bing-Fu LEI, Wei LI, Ying-Liang LIU. Hydrothermal Preparation and Application of Oil-soluble Carbon Dots with High Ultraviolet-short-wave Blue Light Shielding[J]. Chinese Journal of Applied Chemistry, 2023, 40(1): 59-68.

Figures/Tables 8

Fig.1 Transmission electron microscopy （A）， high-resolution transmission electron microscopy （B）， particle size distribution （C） of carbon dots prepared by hydrothermal method； carbon dots and UV-9 Raman spectroscopy （D）

Fig.2 Nuclear magnetic resonance spectra （A） and infrared spectra （B） of carbon dots prepared by hydrothermal method and UV-9

Fig.3 X-ray photoelectron spectrum （A）， carbon spectrum （B）， oxygen spectrum （C） and nitrogen spectrum （D） of carbon dots prepared by hydrothermal method and UV-9

Fig.4 UV-Vis and fluorescence spectra （A）， normalized emission spectra （B）， lifetime decay curves （C） of carbon dots prepared by hydrothermal method， UV-Vis absorption spectra of carbon dots and UV-9 （D）， UV-Vis absorption spectra of UV-9 in different solvents （E） and UV-Vis absorption spectra of carbon dots in different solvents （F）

Fig.5 UV-Vis transmission spectra of CDs@PMMA containing different mass fractions of CDs （A）， UV-Vis transmission spectra of pure PMMA， CDs dissolved in dichloromethane solution， and CDs@PMMA with a mass fraction of CDs of 0.05% （B）， photos of CDs@PMMA with different mass fractions of carbon dots and commercially available anti-blue light lenses under sunlight （C）

Fig.6 UV-Vis transmission spectra （A） of CDs@PMMA and UV-9@PMMA containing the same mass fraction of CDs/UV-9， CDs@PMMA with 1% CDs and commercially available anti-blue light lenses UV-Vis transmission spectrum （B）， Shelding efficiency of different films （C）

Table 1 T550 nm， TSWBL， TUV-A and TUV-B values of CDs@PMMA and UV-9@PMMA containing the same mass fraction of CDs/UV-9 and commercially available anti-blue light lenses

Sample	T_{550 nm}/%	T_SWBL/%	T_UV-A/%
1%CDs	99.5	1.6	0
1%UV-9	98.8	94.8	2.2
Commercial	87	5.2	0

Fig.7 Schematic diagram of the experimental setup （A）， photos of the light spots of blue light-emitting diodes （10 W， 400 nm） covered with different films （B）

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Hydrothermal Preparation and Application of Oil-soluble Carbon Dots with High Ultraviolet-short-wave Blue Light Shielding

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