Yang Haochuan, Javed Khalid, Li Xi, Zou Yuqi, Dai Xingliang, He Haiping, Qiao Xvsheng, Tao Guangming
School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China.
Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China.
iScience. 2024 Jun 28;27(8):110407. doi: 10.1016/j.isci.2024.110407. eCollection 2024 Aug 16.
Multifunctional micro- and nanoparticles have found their applications in fields like medicine, display materials, cosmetics, and so on. Advances in these fields have been demonstrated to need scalable uniformly sized, mass-produced, and structured spherical particles. In this work, we proposed structure-tailored and multifunctional composite polymeric microspheres with tunable diameter size, by using a versatile and scalable in-fiber particle fabrication through the Plateau-Rayleigh capillary instability method. The results show that the characteristic shapes of the luminescence spectra of CsPbBr remained similar before and after embedding in the microspheres. The luminescence intensity was stabilized at 85-90% of their original photoluminescence intensities over an extended period. Moreover, the photoluminescence lifetime of the fluorescent microspheres was increased by 9.03% compared to CsPbBr. The X-ray diffraction results revealed that there was no change in the crystal structure of the dopants before and after the encapsulation. Also, precise magnetic manipulation of Janus microspheres was successfully demonstrated.
多功能微纳米粒子已在医学、显示材料、化妆品等领域得到应用。这些领域的进展表明需要可扩展的尺寸均匀、可大规模生产且结构化的球形粒子。在这项工作中，我们通过普朗特 - 瑞利毛细管不稳定性方法，利用通用且可扩展的纤维内粒子制造技术，提出了具有可调直径尺寸的结构定制型多功能复合聚合物微球。结果表明，CsPbBr嵌入微球前后，其发光光谱的特征形状保持相似。在较长时间内，发光强度稳定在其原始光致发光强度的85 - 90%。此外，与CsPbBr相比，荧光微球的光致发光寿命增加了9.03%。X射线衍射结果表明，掺杂剂在封装前后的晶体结构没有变化。同时，还成功演示了对Janus微球的精确磁操控。
