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- Title
Permanent locking of colloidal crystals composed of core‐brush polymeric nanoparticles.
- Authors
Kim, Dong‐Hyeon; Ishizu, Koji; Lee, Dong‐Hoon
- Abstract
Seed colloidal core particles (CCPs) were prepared by surfactant‐free emulsion polymerization of tert‐butyl methacrylate and the cross‐linker ethylene glycol dimethacrylate (EGDMA) initiated by potassium persulfate. Core‐shell particles (CSPs) were then synthesized by the encapsulation of the CCPs via the living radical polymerization of methyl methacrylate, EGDMA, and N,N‐diethyldithiocarbamate. These CSPs present surface photofunctional dithiocarbamate groups. Core‐poly(methyl methacrylate) brush particles (CBPs) were then prepared by photoinduced atom transfer radical polymerization of MMA initiated by CBP macroinitiators in the presence of a CuCl/bpy catalyst. Colloidal crystals were constructed using these particles and novel locking methods for these colloidal crystals were established. Their optical properties were investigated by measuring their reflection spectra from a viewpoint of structural colors. As a result, structural colors were strongly dependent on particle size (Ds) and effective refractive index (neff). POLYM. ENG. SCI., 58:1698–1702, 2018. © 2017 Society of Plastics Engineers
- Subjects
COLLOIDAL crystals; NANOPARTICLES; CROSSLINKING (Polymerization); METHYL methacrylate; ATOM transfer reactions
- Publication
Polymer Engineering & Science, 2018, Vol 58, Issue 10, p1698
- ISSN
0032-3888
- Publication type
Article
- DOI
10.1002/pen.24762