title: A platform for preparation of monodispersed fluorescent conjugated polymer microspheres with core-shell structures.
abstract: 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 coefficient 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.
authors.affiliation: Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Department of Polymer Science and Engineering, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, P R China.
authors.forename: Shangli
authors.initials: S
authors.lastname: Wang
authors.forename: Wei
authors.initials: W
authors.lastname: Zhao
authors.forename: Jing
authors.initials: J
authors.lastname: Song
authors.forename: Si
authors.initials: S
authors.lastname: Cheng
authors.forename: Li-Juan
authors.initials: LJ
authors.lastname: Fan
mesh_terms: D005456:Fluorescent Dyes / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008863:Microspheres; D010316:Particle Size; D011137:Polystyrenes; D011145:Polyvinyls / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D011137:Polystyrenes; D011145:Polyvinyls; C470024:poly(4-phenylenevinylene)