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,resu...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.展开更多
Effective antifouling coatings are critical for protecting marine infrastructure from biofouling and environmental degradation;however,achieving long-term antifouling performance along with environmental stability rem...Effective antifouling coatings are critical for protecting marine infrastructure from biofouling and environmental degradation;however,achieving long-term antifouling performance along with environmental stability remains a major challenge.In this study,a multifunctional bio-based epoxy coating is developed by integrating a dual-action antifouling system.Cinnamic acid(CA),which is known for its antibacterial and UV-shielding properties,was chemically grafted into ethylene glycol diglycidyl ether(EGDE)to provide intrinsic antifouling and anti-UV functions.Simultaneously,the KH560-modified silica aerogel was incorporated to create a dense hydrophobic surface that repels microorganism adhesion.The resulting coating exhibited a superhydrophobic contact angle of 154.3°,an ultralow surface energy,and exceptional resistance to protein and algal adhesion.Additionally,it achieves 99%bactericidal efficiency against Escherichia coli(E.coli)and Staphylococcus aureus(S.aureus)while maintaining high transparency and ease of processing.These results highlight a promising strategy for designing durable and ecofriendly antifouling coatings suitable for demanding marine environments.展开更多
基金supported by the National Natural Science Foundation of China(52173292)the Youth Innovation Promotion Association CAS(2018040)。
文摘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.
基金financially supported by the National Natural Science Foundation of China(Nos.U23A20589 and E52307038)China Postdoctoral Science Foundation(No.2023M743622)+3 种基金Zhejiang Provincial Natural Science Foundation of China(No.LQ23E030006)Ningbo 2025 Key Scientific Research Programs(Nos.2022Z111,2022Z160,and 2022Z198)Natural Science Foundation of Ningbo City(Nos.2022J302 and 2024J122)Leading Innovative and Entrepreneur Team Introduction Program of Zhejiang(No.2021R01005)。
文摘Effective antifouling coatings are critical for protecting marine infrastructure from biofouling and environmental degradation;however,achieving long-term antifouling performance along with environmental stability remains a major challenge.In this study,a multifunctional bio-based epoxy coating is developed by integrating a dual-action antifouling system.Cinnamic acid(CA),which is known for its antibacterial and UV-shielding properties,was chemically grafted into ethylene glycol diglycidyl ether(EGDE)to provide intrinsic antifouling and anti-UV functions.Simultaneously,the KH560-modified silica aerogel was incorporated to create a dense hydrophobic surface that repels microorganism adhesion.The resulting coating exhibited a superhydrophobic contact angle of 154.3°,an ultralow surface energy,and exceptional resistance to protein and algal adhesion.Additionally,it achieves 99%bactericidal efficiency against Escherichia coli(E.coli)and Staphylococcus aureus(S.aureus)while maintaining high transparency and ease of processing.These results highlight a promising strategy for designing durable and ecofriendly antifouling coatings suitable for demanding marine environments.
