title: Direct Observation of Highly Ordered Dendrimer Soft Building Blocks over a Large Area.
abstract: Developing large-area, single domain of organic soft-building blocks such as block copolymers, colloids, and supramolecular materials is one of the most important issues in the materials science and nanotechnology. Owing to their small sizes, complex molecular architectures, and high mobility, supramolecular materials are not well-suited for building large area, single domain structures. In the described study, a single domain of supramolecular columnar dendrimers was created over large area. The columnar structures in these domains have smaller (4.5 nm) diameters, higher area densities (ca. 36 Tera-dots/in(2)) and larger domains (>0.1 × 0.1 mm(2)) than those of all existing BCP and colloidal assemblies. By simply annealing dendrimer thin films between two flat solid surfaces, single domains of hexagonal columnar structures are created over large macroscopic areas. Observations made in this effort should serve as the foundation for the design of new routes for bottom-up lithography based on supramolecular building blocks.
authors.affiliation: Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) 335 Gwahangno, Yuseong-gu, Daejeon, 305-701, Korea.
authors.forename: Kiok
authors.initials: K
authors.lastname: Kwon
authors.affiliation: Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) 335 Gwahangno, Yuseong-gu, Daejeon, 305-701, Korea.
authors.forename: Jong Min
authors.initials: JM
authors.lastname: Ok
authors.affiliation: Division of Advanced Materials, Korea Research Institute of Chemical Technology (KRICT) 141 Gajeongro, Daejeon 305-600, Korea.
authors.forename: Yun Ho
authors.initials: YH
authors.lastname: Kim
authors.affiliation: Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) 335 Gwahangno, Yuseong-gu, Daejeon, 305-701, Korea.
authors.forename: Jong-Seon
authors.initials: JS
authors.lastname: Kim
authors.affiliation: Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) 335 Gwahangno, Yuseong-gu, Daejeon, 305-701, Korea.
authors.forename: Woo-Bin
authors.initials: WB
authors.lastname: Jung
authors.affiliation: Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) 335 Gwahangno, Yuseong-gu, Daejeon, 305-701, Korea.
authors.forename: Soo-Yeon
authors.initials: SY
authors.lastname: Cho
authors.affiliation: Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST) 335 Gwahangno, Yuseong-gu, Daejeon, 305-701, Korea.
authors.forename: Hee-Tae
authors.initials: HT
authors.lastname: Jung
keywords: Dendrimer; column; self-assembly; single domain; supramolecule