title: Single-solvent facile synthesis of monodisperse sub-20 nm polymeric nanoparticles via self-assembly process.
abstract: Nanoparticles with sizes less than 20 nm present unique properties and potential applications, whereas encounter great synthetic challenges. In this work, we demonstrate a single-solvent method for facile synthesis of uniform polymeric nanoparticles in the regime of 1-20 nm. Short-chain block copolymers, such as polystyrene-b-poly(1,2-butadiene) (PS-b-PB) and polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP), directly self-assemble into micelles or reverse micelles in specific selective solvents. The following in situ crosslinking of the micelle core or corona produces a variety of extremely tiny organic nanoparticles. Representatively, sub-10nm nanoparticles with either elastic core or corona are obtained from PS-b-PB block copolymers and sub-20 nm nanoparticles with highly stretched core and loosely packed corona are prepared from PS-b-P4VP block copolymers. These nanoparticles could show priority in the preparation of novel nanocomposites or in modeling the nanocytotoxicities.
authors.affiliation: Bayreuther Zentrum fuer Kolloide und Grenzflaechen, Universitaet Bayreuth, D-95440 Bayreuth, Germany. Electronic address: zhangyo001@gmail.com.
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Wang
keywords: Block copolymers; Facile synthesis; Micelles; Nanoparticles; Self-assembly