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Functionalized organic nanoparticles from core-crosslinked poly(4-vinylbenzocyclobutene-b-butadiene) diblock copolymer micell...

by Georgios Sakellariou, Apostolos Avgeropoulos, Nikos Hadjichristidis, Jimmy W Mays, Durairaj Baskaran
Publication Type
Journal
Journal Name
Polymer
Publication Date
Page Numbers
6202 to 6211
Volume
50
Issue
26

Sufface-functionalized polymeric nanoparticles were prepared by: a) self~assembly of poly(4-vinylbenzocyclobutene-b-butadiene) diblock copolymer (PVBCB-b-PB) to form spherical micelles (diameter:15-48 nm) in decane, a selective solvent for PB, b) crosslinking of the PVBCB core through thermal dimerization at 200-240 ~ C, and c) cleavage of the PB corona via ozonolysis and addition of dimethyl sulfide to afford aldehyde-functionalized nanoparticles (diameter: -16-20 nm), along with agglomerated nanoparticles ranging from - 30 to -100 nm in diameter. The characterization of the diblock copolymer precursors. the intermediate micelles and the final surface-functionalized crosslinked
nanoparticles was carried alit by a combination of size exclusion chromatography, static and dynamic
light scattering, viscometry, thermogravimetric analysis, 1 H NMR and FfIR spectroscopy and transmission electron microscopy.