Eco-friendly fractionation of natural straws: sustainable ultralong room-temperature phosphorescence and super anti-ultraviolet materials

被引：0

作者：

Zhenghao Xia ^{[1
,2
]}

Jingxuan You ^{[1
,2
]}

Haojie An ^{[3
]}

Yirong Wang ^{[1
,2
]}

Jinming Zhang ^{[1
]}

Chunchun Yin ^{[1
]}

Yaohui Cheng ^{[4
]}

Kunfeng Jin ^{[1
]}

Jun Zhang ^{[1
,2
]}

机构：

[1] CAS Key Laboratory of Engineering Plastics,Institute of Chemistry,Chinese Academy of Sciences(CAS)

[2] School of Chemical Sciences,University of Chinese Academy of Sciences

[3] HongDa Research Institute Co,Ltd

[4] Key National Laboratory of Solid State Microstructures,Collaborative Innovation Center of Advanced Microstructures,Nanjing

来源：

Science China(Chemistry) | 2024年 / 67卷 / 07期

关键词：

D O I：

暂无

中图分类号：

TB34 [功能材料]; TK6 [生物能及其利用];

学科分类号：

080501 ; 080703 ;

摘要：

We demonstrate a new green solvent consisting of ionic liquid and polyol to achieve a selective fractionation of lignin from biomass. The lignin from corn straw is rich in syringyl unit and phenolic hydroxyl group, resulting in excellent room-temperature phosphorescence(RTP) performance, antioxidation property and long-term photostability. Flexible film, fiber, aerogel and coatings with an ultralong RTP lifetime of 0.654 s are obtained. The lignin from corn straw completely blocks UV light of290–400 nm at an extremely low usage due to many p-coumarate units. When the content is as low as 1.54 mg/g, which is two orders of magnitude lower than the previous reports, the corresponding sunscreen cream has a super-high sun protection factor(SPF) of 183.9. More importantly, the lignin self-assembles into nanospheres of 250–350 nm, preventing penetration into the skin. Such easily-available, abundant, low-cost, safe and natural lignin provides an innovative avenue for sustainable optical function materials.

引用

页码：2373 / 2381

页数：9

共 32 条

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