A Platform for Preparation of Monodispersed Fluorescent Conjugated Polymer Microspheres with Core-shell Structures
作者：Shangli Wang, Wei Zhao, Jing Song, Si Cheng, Li-Juan Fan *
關(guān)鍵字：conjugated polymer ， flow cytometry，fluorescent microspheres，laser confocal microscopy ，monodispersed
論文來(lái)源：期刊
具體來(lái)源：Macromol. Rapid. Comm. 2013 34(1),102-108
發(fā)表時(shí)間：2013年
A strategy to prepare stable monodispersed fluorescent microspheres is developed by modifying the Wessling method to synthesize poly(p-phenylenevinylene) (PPV) on the surface of a highly crosslinked polymer core. The positively charged PPV polymer precursors (pre-PPV) are adsorbed onto the core with negative charges on the surface and then the insoluble fluorescent PPVs form after thermal elimination. Each individual sphere is found to possess a very smooth surface with an even distribution of fluorescence by microscopic techniques. Very small coeffi cient of variance (CV) values of emission intensity ( < 4.0%) and size ( < 2.3%) are realized for microspheres prepared in the same batch. The spheres are demonstrated to have good thermal stability and photostability.