个人信息Personal Information
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. 有机化学
办公地点:大连市高新区凌工路2号西部校区化工楼E434房间
联系方式:0411-84986265
电子邮箱:zhangshf@dlut.edu.cn
Fabrication of Poly(styrene-co-maleic anhydride)@Ag Spheres with High Surface Charge Intensity and their Self-Assembly into Photonic Crystal Films
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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.