印染助剂2017，Vol.34Issue(8)：15-19,5.
β-NaYF4:Yb,Er复合丝素荧光薄膜的制备与表征
Preparation and characterization of β-NaYF4:Yb,Er composite fluorescence silk fibroin film
摘要
Abstract
β-NaYF4:Yb,Er nanocrystals were firstly prepared by thermal decomposition and then spin-coated on silk fibroin film substrate to obtain fluorescence silk fibroin film. β-NaYF4:Yb,Er nanocrystals and fluorescence silk fibroin film were characterized by transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), fluorescence spectra and optical transmittance spectra. It could be seen that the as-prepared β-NaYF4:Yb,Er nanocrystals with the average size of 35 nm were well dispersed, hexagonal-phase and coated with oleic acid. The concentration of β-NaYF4:Yb,Er nanocrystals had a major impact on transmittance of fluorescence silk fibroin film. The transmittance decreased with concentration increasing of β-NaYF4:Yb,Er nanocrystals. The UC emission spectrum of fluorescence silk fibroin film under 980 nm laser excitation showed three emissions located around 520, 540 and 660 nm, which arose from the 4f configuration transitions of Er3+ from 2H11/2 to 4I15/2, 4S3/2 to 4I15/2 and 4F9/2 to 4I15/2, respectively. The main upconversion luminescence mechanism was energy transfer upconversion (ETU).关键词
丝素/β-NaYF4:Yb,Er/纳米晶体/荧光/薄膜Key words
silk fibroin/β-NaYF4:Yb/Er/nanocrystals/fluorescence/film分类
数理科学引用本文复制引用
祁宁,赵兵..β-NaYF4:Yb,Er复合丝素荧光薄膜的制备与表征[J].印染助剂,2017,34(8):15-19,5.基金项目
国家自然科学基金(51503137、51373110) （51503137、51373110）
江苏高校优势学科建设工程资助项目 （）
江苏省科技创新团队项目资助(2013) （2013）
