title: Synthesis and characterization of monodispersed polymer/polydiacetylene nanocrystal composite particles.
abstract: Monodispersed polymer/polydiacetylenecomposite particles were synthesized by soap-free seeded emulsion polymerization of styrene andmethyl methacrylate; the products were characterized by XRD, SEM, TEM, UV-visible spectroscopy, and single particle scattering spectroscopy. In the synthesis process, polydiacetylene nanocrystals were found to act as inhibitor, and consequently a relatively low concentration was necessary. Different monomers lead to the differences in reaction condition and particle morphology; the PMMA composite particles were simpler in preparation than polystyrene particles, but the latter havebetter spherical morphology. The composite particles were composed of polymer shells and polydiacetylene cores, which kept their crystal structure and optical properties. A high percentage of cored particles could be achieved with optimized reaction conditions where the amount of seed was sufficient and the oily oligomer by-product was suppressed.
authors.affiliation: Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2 Chome, Aobaku, Sendai, Miyagi 980-8577, Japan.
authors.forename: Zhong
authors.initials: Z
authors.lastname: Wei
authors.forename: Kento
authors.initials: K
authors.lastname: Ujiiye-Ishii
authors.forename: Akito
authors.initials: A
authors.lastname: Masuhara
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Kasai
authors.forename: Shuji
authors.initials: S
authors.lastname: Okada
authors.forename: Hideki
authors.initials: H
authors.lastname: Matsune
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Asahi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Masuhara
authors.forename: Hachiro
authors.initials: H
authors.lastname: Nakanishi
mesh_terms: D000114:Acetylene / Q000031:analogs & derivatives* / Q000032:analysis / Q000737:chemistry; D003460:Crystallization / Q000379:methods*; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000032:analysis / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size; D000078789:Polyacetylene Polymer; D011108:Polymers / Q000032:analysis / Q000737:chemistry*; D019904:Polymethyl Methacrylate / Q000032:analysis / Q000737:chemistry*; D011137:Polystyrenes / Q000032:analysis / Q000737:chemistry*; D053279:Polyynes
chemical_list: D000078789:Polyacetylene Polymer; D011108:Polymers; D011137:Polystyrenes; D053279:Polyynes; C082361:polydiacetylene; D019904:Polymethyl Methacrylate; D000114:Acetylene