Polyvinylpyrrolidone Nanofibers Encapsulating an Anhydrous Preparation of Fluorescent SiO₂⁻Tb3+ Nanoparticles

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

doi:10.3390/nano9040510

Polyvinylpyrrolidone Nanofibers Encapsulating an Anhydrous Preparation of Fluorescent SiO₂⁻Tb³⁺ Nanoparticles

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

Authors

Jianhang Shi^{1

2}, Yanxin Wang^{3

4}, Linjun Huang^{5

6}, Peng Lu^{7

8}, Qiuyu Sun^{9

10}, Yao Wang^{11

12}, Jianguo Tang^{13

14}, Laurence A Belfiore¹⁵, Matt J Kipper^{16

17

18}

Affiliations

¹ 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. sjhang@163.com.
² College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China. sjhang@163.com.
³ 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. wangyanxin@qdu.edu.cn.
⁴ College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China. wangyanxin@qdu.edu.cn.
⁵ 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. newboy66@126.com.
⁶ College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China. newboy66@126.com.
⁷ 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. 18753360989@163.com.
⁸ College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China. 18753360989@163.com.
⁹ 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. SQY17861431023@163.com.
¹⁰ College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China. SQY17861431023@163.com.
¹¹ 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. wangyaoqdu@126.com.
¹² College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China. wangyaoqdu@126.com.
¹³ 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. tang@qdu.edu.cn.
¹⁴ College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China. tang@qdu.edu.cn.
¹⁵ Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA. laurence.belfiore@colostate.edu.
¹⁶ Department of Chemical and Biological Engineering, Colorado State University, Fort Collins, CO 80523, USA. matthew.kipper@colostate.edu.
¹⁷ School of Biomedical Engineering, Colorado State University, Fort Collins, CO 80523, USA. matthew.kipper@colostate.edu.
¹⁸ School of Advanced Materials Discovery, Colorado State University, Fort Collins, CO 80523, USA. matthew.kipper@colostate.edu.

Abstract

A novel anhydrous preparation of silica (SiO₂)-encapsulated terbium (Tb³⁺) complex nanoparticles has been investigated. The SiO₂-Tb³⁺ nanoparticles are incorporated in electrospun polyvinylpyrrolidone hybrid nanofibers. Transmission electron microscopy confirms that Tb³⁺ complexes are uniformly and stably encapsulated in or carried by nanosilica. The influence of pH on the fluorescence of Tb³⁺ complexes is discussed. The properties, composition, structure, and luminescence of the resulting SiO₂⁻Tb³⁺ hybrid nanoparticles are investigated in detail. There is an increase in the fluorescence lifetime of SiO₂⁻Tb³⁺ nanoparticles and SiO₂⁻Tb³⁺/polyvinylpyrrolidone (PVP) hybrid nanofibers compared with the pure Tb³⁺ complexes. Due to the enhanced optical properties, the fluorescent hybrid nanofibers have potential applications as photonic and photoluminescent materials.

Keywords: electrospinning; fluorescence; lifetime; silica; terbium complex.

Abstract

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