• 更多栏目

    武素丽

    • 教授     博士生导师   硕士生导师
    • 性别:女
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:化工学院
    • 学科:应用化学. 精细化工
    • 办公地点:西部校区实验楼E-422
    • 联系方式:13842603107
    • 电子邮箱:wusuli@dlut.edu.cn

    访问量:

    开通时间:..

    最后更新时间:..

    Fabrication of Poly(styrene-co-maleic anhydride)@Ag Spheres with High Surface Charge Intensity and their Self-Assembly into Photonic Crystal Films

    点击次数:

    论文类型:期刊论文

    发表时间:2017-10-01

    发表刊物:CHEMISTRYOPEN

    收录刊物:PubMed、Scopus、SCIE

    卷号:6

    期号:5

    页面范围:637-641

    ISSN号:2191-1363

    关键字:photonic crystals; Raman spectroscopy; self-assembly; surface plasmon resonance

    摘要:Herein, we developed a method to prepare monodisperse poly(styrene-co-maleic anhydride)@Ag (PSMA@Ag) core-shell microspheres with high surface charge intensity by using an in situ reduction method. In this method, ethylenediamine tetra acetic acid tetrasodium salt (Na(4)EDTA) was used as a reducing agent to promote the growth of Ag, and at the same time endowed the PSMA@Ag spheres with a surface charge. The monodispersity of PSMA and PSMA@Ag and the ordered array of the photonic crystal films were characterized by using SEM. The formation of Ag nanoparticles was confirmed by using TEM, HR-TEM, and XRD characterizations. Due to the existence of surface charges, the obtained PSMA@Ag microspheres easily self-assembled to form photonic crystal structures. In addition, the surface-enhanced Raman scattering (SERS) activity of the PSMA@Ag photonic crystal films was evaluated by detecting the signal from Raman probe molecules, 4-aminothiophenol (4-ATP). The PSMA@Ag photonic crystal films exhibited a high SERS effect, a low detection limit of up to 10 8 for 4-ATP, good uniformity, and reproducibility.