title: The size control of silver nanocrystals with different polyols and its application to low-reflection coating materials.
abstract: The size of silver nanocrystals in polyol synthesis can be simply controlled by tuning the viscosity of the reaction medium such as ethylene glycol, 1,2-propanediol, 1,4-butanediol and 1,5-pentanediol. We found that a higher viscose medium (1,5-pentanediol) led to monodispersed smaller particles thanks to the slow addition of silver atoms into the nuclei. Size-controlled silver nanocrystals of 30 nm were obtained in a viscosity controlled medium of 1,5-pentanediol to synthesize a low refractive index filler by coating with silica and subsequent etching of the silver core. The coated low-reflection layer from the hollow silica nanoparticles on polyethylene terephthalate (PET) film can greatly reduce the reflection of the PET film from 10% to 2% over the entire visible region.
authors.affiliation: Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Korea.
authors.forename: Keum Hwan
authors.initials: KH
authors.lastname: Park
authors.forename: Sang Hyuk
authors.initials: SH
authors.lastname: Im
authors.forename: O Ok
authors.initials: OO
authors.lastname: Park
mesh_terms: D002072:Butylene Glycols / Q000737:chemistry; D019855:Ethylene Glycol / Q000737:chemistry; D006018:Glycols / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D010420:Pentanes; D019946:Propylene Glycol / Q000737:chemistry; D012834:Silver / Q000737:chemistry*; D014783:Viscosity
chemical_list: D002072:Butylene Glycols; D006018:Glycols; D010420:Pentanes; C578469:1,5-pentanediol; D012834:Silver; D019946:Propylene Glycol; C039681:1,4-butanediol; D019855:Ethylene Glycol