包裹无水荧光SiO₂⁻Tb纳米颗粒制剂的聚乙烯吡咯烷酮纳米纤维

Polyvinylpyrrolidone Nanofibers Encapsulating an Anhydrous Preparation of Fluorescent SiO₂⁻Tb Nanoparticles.

作者信息

Shi Jianhang, Wang Yanxin, Huang Linjun, Lu Peng, Sun Qiuyu, Wang Yao, Tang Jianguo, Belfiore Laurence A, Kipper Matt J

机构信息

Institute of Hybrid Materials, National Center of International Joint Research for Hybrid Materials Technology, National Base of International Sci. & Tech. Cooperation on Hybrid Materials, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao 266071, China.

College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.

出版信息

Nanomaterials (Basel). 2019 Apr 2;9(4):510. doi: 10.3390/nano9040510.

A novel anhydrous preparation of silica (SiO₂)-encapsulated terbium (Tb) complex nanoparticles has been investigated. The SiO₂-Tb nanoparticles are incorporated in electrospun polyvinylpyrrolidone hybrid nanofibers. Transmission electron microscopy confirms that Tb complexes are uniformly and stably encapsulated in or carried by nanosilica. The influence of pH on the fluorescence of Tb complexes is discussed. The properties, composition, structure, and luminescence of the resulting SiO₂⁻Tb hybrid nanoparticles are investigated in detail. There is an increase in the fluorescence lifetime of SiO₂⁻Tb nanoparticles and SiO₂⁻Tb/polyvinylpyrrolidone (PVP) hybrid nanofibers compared with the pure Tb complexes. Due to the enhanced optical properties, the fluorescent hybrid nanofibers have potential applications as photonic and photoluminescent materials.

一种新型的二氧化硅（SiO₂）包裹铽（Tb）配合物纳米粒子的无水制剂已被研究。SiO₂-Tb纳米粒子被掺入静电纺丝的聚乙烯吡咯烷酮混合纳米纤维中。透射电子显微镜证实Tb配合物均匀且稳定地包裹在纳米二氧化硅中或由纳米二氧化硅携带。讨论了pH对Tb配合物荧光的影响。对所得SiO₂⁻Tb混合纳米粒子的性质、组成、结构和发光进行了详细研究。与纯Tb配合物相比，SiO₂⁻Tb纳米粒子和SiO₂⁻Tb/聚乙烯吡咯烷酮（PVP）混合纳米纤维的荧光寿命有所增加。由于光学性能增强，荧光混合纳米纤维作为光子和光致发光材料具有潜在应用。