Synthesis of modified carbon dots with performance of ultraviolet absorption used in sunscreen

Hu, Gang; Lei, Bingfu; Jiao, Xianfu; Wu, Shuangshuang; Zhang, Xuejie; Zhuang, Jianle; Liu, Xiaotang; Hu, Chaofan; Liu, Yingliang

doi:10.1364/oe.27.007629

Cited by 29 publications

(16 citation statements)

References 26 publications

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“…Here, we only summarize some common UVvisible absorption phenomenon rather than some special examples. Typically, one or more absorption peaks can be clearly observed in the UV region ranged from 260 nm to 320 nm [116][117][118][119][120][121][122]. And, a tail can extend to the overall visible region.…”

Section: Uv-absorption Property Of Cdsmentioning

confidence: 99%

Carbon Dots: Synthesis, Properties and Applications

Ren²,

et al. 2021

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Carbon dots (CDs) are known as the rising star of carbon-based nanomaterials and, by virtue of their unique structure and fascinating properties, they have attracted considerable interest in different fields such as biological sensing, drug delivery, photodynamic therapy, photocatalysis, and solar cells in recent years. Particularly, the outstanding electronic and optical properties of the CDs have attracted increasing attention in biomedical and photocatalytic applications owing to their low toxicity, biocompatibility, excellent photostability, tunable fluorescence, outstanding efficient up-converted photoluminescence behavior, and photo-induced electron transfer ability. This article reviews recent progress on the synthesis routes and optical properties of CDs as well as biomedical and photocatalytic applications. Furthermore, we discuss an outlook on future and potential development of the CDs based biosensor, biological dye, biological vehicle, and photocatalysts in this booming research field.

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Section: Uv-absorption Property Of Cdsmentioning

confidence: 99%

Carbon Dots: Synthesis, Properties and Applications

Ren²,

et al. 2021

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“…In many reports, the CPDs synthesized from biomass or citric acid are used as UV absorbers. However, there are problems such as single species and a narrow absorption range. ,, So far, the UV absorption properties, their structure–activity relationship, and the synthesis of full-band absorption CPDs based on amino acids have not been reported yet.…”

Section: Introductionmentioning

confidence: 99%

One-Step Hydrothermal Synthesis of Nitrogen-Doped Carbonized Polymer Dots with Full-Band Absorption for Skin Protection

Qiu

et al. 2022

ACS Sustainable Chem. Eng.

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Long-term and excessive ultraviolet (UV) radiation will trigger various skin diseases, and traditional organic and inorganic sunscreens possess disadvantages such as biocompatibility and being prone to aggregation. Carbon polymer dots (CPDs) are an excellent candidate for UV absorbers due to their polyfunctional groups, superior stabilization, and low cytotoxicity. In this study, we explored the conformational relationship of the structure of CPDs on the full-band absorbers by synthesizing various CPDs using amino acids with different structures. We proposed that amino acid self-assembly readily generates UVBabsorbing CPDs, and the increase in nitrogen-containing compounds facilitates the synthesis of full-band UV absorbers. The efficient and full-band-absorbing carbon polymer dots (His-CPDs) were synthesized with L-histidine and ethylene imine polymer (PEI) through a one-step hydrothermal method obtained by screening. Subsequently, three UV absorption bands of His-CPDs were explored attributed to carbon cores at 225 nm, including saturated hydrocarbons containing oxygen, nitrogen, and other heteroatoms derivatives. The C�C bond induced the 300 nm absorption band, and 356 nm was mainly from the C�N bond formed by PEI. Finally, His-CPDs were prepared as sunscreens and applied to mice, which showed excellent anti-UV ability and a high sun protection factor (SPF) compared to commercial sunscreens. It is an essential breakthrough made using the superior UV-absorbing properties of CPDs for life.

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“…After UV irradiation for 3 days, the tensile strength of pure SA films was reduced by 39% while the F-CPDs1 decreased to only 15% of the original strength, showing good preserved strength against UV irradiation. This unique property was because SG-CPDs can convert the absorbed UV light into heat energy, at the same time accelerate the loss of water molecules, and make the internal structure of the films more compact, so the tensile strength of the F-CPDs1 was well preserved . As shown in Figure S4, the tensile strengths of the films with different amounts of SG-CPDs (F-CPDs0.5, F-CPDs1, and F-CPDs1.5 with dosages of SG-CPDs 0.5, 1, and 1.5 mL, respectively) were further explored.…”

Section: Resultsmentioning

confidence: 97%

“…This unique property was because SG-CPDs can convert the absorbed UV light into heat energy, at the same time accelerate the loss of water molecules, and make the internal structure of the films more compact, so the tensile strength of the F-CPDs1 was well preserved. 29 As shown in Figure S4 , the tensile strengths of the films with different amounts of SG-CPDs (F-CPDs0.5, F-CPDs1, and F-CPDs1.5 with dosages of SG-CPDs 0.5, 1, and 1.5 mL, respectively) were further explored. It can be seen that the amount of SG-CPDs had little influence on the tensile strengths of the films.…”

Section: Resultsmentioning

confidence: 99%

Fluorescent Carbonized Polymer Dots Prepared from Sodium Alginate Based on the CEE Effect

Sun

Jiang

et al. 2020

ACS Omega

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In recent years, as a new type of carbon dots, carbonized polymer dots (CPDs) have attracted more and more attention in many fields. In this experiment, a new kind of CPDs was synthesized by the hydrothermal treatment of the chemically cross-linked sodium alginate (SA) via glutaraldehyde. The fluorescence of CPDs was greatly enhanced because of the cross-linking enhanced emission effect. The formation process of CPDs at different reaction temperatures was explored. In addition, it was found that CPDs have stable fluorescence properties in mild acidic/basic and metal-ion environments. The in vitro toxicity of CPDs was tested, and based on their nontoxic property, SA films with anti-ultraviolet aging properties were prepared by using CPDs as the additive.

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Synthesis of modified carbon dots with performance of ultraviolet absorption used in sunscreen

Cited by 29 publications

References 26 publications

Carbon Dots: Synthesis, Properties and Applications

Carbon Dots: Synthesis, Properties and Applications

One-Step Hydrothermal Synthesis of Nitrogen-Doped Carbonized Polymer Dots with Full-Band Absorption for Skin Protection

Fluorescent Carbonized Polymer Dots Prepared from Sodium Alginate Based on the CEE Effect

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