材料科学
吸收(声学)
乙二醇
聚合物
化学工程
碳纤维
亚胺
生物相容性
光化学
化学
有机化学
复合材料
复合数
工程类
催化作用
作者
Jiemin Qiu,Weihao Ye,Xiaokai Xu,Congcong Chen,Zhiqiang Xu,Bingfu Lei,Chaofan Hu,Jianle Zhuang,Hanwu Dong,Guangqi Hu,Wei Li
出处
期刊:ACS Sustainable Chemistry & Engineering
[American Chemical Society]
日期:2022-08-30
卷期号:10 (36): 11958-11968
被引量:12
标识
DOI:10.1021/acssuschemeng.2c03324
摘要
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 UVB-absorbing 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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