title: Highly oriented gold/nanoclay-polymer nanocomposites for flexible gas barrier films.
abstract: Layer-by-layer (LBL) assembly, which uses electronic and ionic intermolecular bonding under nonvacuum conditions, is a promising technology for fabricating gas barrier films owing to its simple processing and easy formation of a multilayer structure. In this research, nanoclay-polymer multilayers of Na(+)-montmorillonite (Na-MMT) were fabricated. Particularly, the addition of AuCl3 on fabricated MMT layers caused a reaction with the surface silanol functional groups (Si-O-H) of the MMT platelets, resulting in the formation of Au2O3 on the MMT-polymer multilayers. The Au2O3 filled the vacancies between the MMT platelets and linked the MMT platelets together, thus forming a gas barrier film that reduced the water vapor transmission rate (WVTR) to 3.2 × 10(-3) g m(-2) day(-1). AuCl3-treated MMT-polymer multilayers thus have the potential to be utilized for manufacturing gas barrier films for flexible electronics on a large scale.
authors: Display and Nanosystem Laboratory, College of Engineering, and ‡The Institute of High Technology Materials and Devices, Korea University , Seoul 136-713, Republic of Korea.
authors: Eun-Ho
authors: EH
authors: Song
authors: Byung-Hyun
authors: BH
authors: Kang
authors: Tan-Young
authors: TY
authors: Kim
authors: Hyun-Jun
authors: HJ
authors: Lee
authors: Young-Wook
authors: YW
authors: Park
authors: Young-Cho
authors: YC
authors: Kim
authors: Byeong-Kwon
authors: BK
authors: Ju
keywords: 2D materials; flexible gas barrier films; gold complex; nanoclay; water vapor transmission rate