title: Nitrogen-doped carbon capsules via poly(ionic liquid)-based layer-by-layer assembly.
abstract: Layer-by-layer (LbL) assembly technique is applied for the first time for the preparation of nitrogen-doped carbon capsules. This approach uses colloid silica as template and two polymeric deposition components, that is, poly(ammonium acrylate) and a poly (ionic liquid) poly(3-cyanomethyl-1-vinylimidazolium bromide), which acts as both the carbon precursor and nitrogen source. Nitrogen-doped carbon capsules are prepared successfully by polymer wrapping, subsequent carbonization and template removal. The as-synthesized carbon capsules contain ≈7 wt% of nitrogen and have a structured specific surface area of 423 m(2) g(-1). Their application as supercapacitor has been briefly introduced. This work proves that LbL assembly methodology is available for preparing carbon structures of complex morphology.
authors.affiliation: Department of Colloid Chemistry, Max Planck Institute of Colloids and Interfaces, D-14424 Potsdam, Germany.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhao
authors.forename: Tim-Patrick
authors.initials: TP
authors.lastname: Fellinger
authors.forename: Markus
authors.initials: M
authors.lastname: Antonietti
authors.forename: Jiayin
authors.initials: J
authors.lastname: Yuan
mesh_terms: D002214:Capsules / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D060326:Chemistry Techniques, Synthetic / Q000379:methods*; D052578:Ionic Liquids / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry*; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D002214:Capsules; D052578:Ionic Liquids; D011108:Polymers; D002244:Carbon; D009584:Nitrogen