生物质化学工程2025，Vol.59Issue(4)：27-36,10.DOI:10.3969/j.issn.1673-5854.2025.04.003
纤维素纳米晶体基多色圆偏振荧光薄膜的制备及性能研究
Preparation and Properties of Cellulose Nanocrystal-based Multicolor Circularly Polarized Fluorescent Films
摘要
Abstract
Lignin-based carbon quantum dots(CQDs)were mixed with cellulose nanocrystals(CNC),to prepare fluorescent composite films(CNC/B,CNC/G and CNC/R)with multicolor circularly polarized light emission by evaporation-induced self-assembly method.The morphology,structure and fluorescence emission properties of CQDs were characterized using transmission electron microscopy(TEM),X-ray photoelectron spectroscopy(XPS)and fluorescence spectroscopy.It was shown that lignin-based carbon quantum dots(B-CQDs,G-CQDs and R-CQDs)with three different fluorescence emissions(blue,green and red)were prepared by hydrothermal synthesis.The fluorescent films were systematically analyzed by ultraviolet-visible spectroscopy(UV-vis),scanning electron microscopy(SEM),polarizing optical microscopy(POM),circular dichroism(CD)and circularly polarized fluorescence(CPL)spectroscopy.The results showed that the fluorescent films have chiral structures.Under excitation light irradiation,the CNC/B-10,CNC/G-30 and CNC/R-50 photonic films achieved the maximum CPL emissions at 417,544 and 667 nm,respectively.In addition,the circularly polarized luminescence performance of the fluorescent film could be effectively regulated by adjusting its photonic forbidden band(PBG).When the emission wavelength of the CQDs matched with the PBG of the fluorescent films,the maximum luminescence asymmetry factor(glum)of the films could reach-0.56,-0.31,and-0.15,respectively.关键词
纤维素纳米晶体/圆偏振荧光/木质素/碳量子点/手性Key words
cellulose nanocrystals/circularly polarized fluorescent/lignin/carbon quantum dots/chirality分类
化学化工引用本文复制引用
孙文野,崔文博,滕睿,徐明聪,刘守新,李伟..纤维素纳米晶体基多色圆偏振荧光薄膜的制备及性能研究[J].生物质化学工程,2025,59(4):27-36,10.基金项目
国家重点研发计划资助项目(2023YFD2201405) （2023YFD2201405）
国家自然科学基金资助项目(32471804) （32471804）
