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Synthesis of hollow fluorescent polymeric microspheres with movable magnetic cores
Author(s) -
Liu Bin,
Yang Xinlin,
Ji Hongfen
Publication year - 2010
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.2813
Subject(s) - materials science , dispersity , fourier transform infrared spectroscopy , magnetite , fluorescence , polymer , chemical engineering , aqueous solution , fluorescence spectroscopy , magnetic nanoparticles , monomer , superparamagnetism , precipitation polymerization , polymer chemistry , nuclear chemistry , radical polymerization , chemistry , nanoparticle , nanotechnology , composite material , magnetization , organic chemistry , magnetic field , physics , quantum mechanics , engineering , metallurgy
Low‐dispersity hollow poly[(ethyleneglycol dimethacrylate)‐ co ‐( N ‐vinylcarbazole)] (P(EGDMA‐ co ‐NVCz)) fluorescent microspheres with movable magnetic cores were prepared by quantitative removal of the silica component in hydrofluoric acid aqueous solution from the corresponding magnetite/silica/P(EGDMA‐ co ‐NVCz) tri‐layer hybrid microspheres. The tri‐layer microspheres with magnetic cores and fluorescent polymer shells were synthesized by distillation precipitation copolymerization of ethyleneglycol dimethacrylate crosslinker and N ‐vinylcarbazole fluorescent monomer in acetonitrile in the presence of 3‐(methacryloxy)propyltrimethoxysilane‐modified magnetite/silica particles as seeds, which were afforded by a modified Stöber sol–gel process, to coat the magnetite cores. The corresponding hollow fluorescent polymer microspheres with movable magnetic cores were studied using transmission electron microscopy, Fourier transform infrared spectroscopy, vibrating sample magnetometry, UV‐visible spectroscopy and fluorescence spectroscopy. Copyright © 2010 Society of Chemical Industry