title: CdS/C60 binary nanocomposite films prepared via phase transition of PS-b-P2VP block copolymer.
abstract: We demonstrate the well-defined control of phase transition of a polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP) block copolymer from spherical micelles to lamellar structures, in which CdS and C60 nanoparticles (NPs) are selectively positioned at the P2VP domains. The CdS NPs are in situ synthesized using PS-b-P2VP block copolymer templates that are self-assembled in PS-selective solvents. The CdS-PS-b-P2VP micellar structures are transformed to lamellar phase by adjusting a solvent selectivity for both blocks. In addition, a binary system of CdS/C60 embedded in PS-b-P2VP lamellar structures (CdS/C60-PS-b-P2VP) is fabricated by embedding C60 molecules into P2VP domain though charge-transfer complexation between pyridine units of PS-b-P2VP and C60 molecules. The CdS/C60-PS-b-P2VP nanostructured films are characterized by transmission electron microscopy (TEM) and UV-Vis spectrometer.
authors.affiliation: Department of Nanobio Materials and Electronics and Department of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Republic of Korea; Interdisciplinary School of Green Energy, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea.
authors.forename: Jung-Pil
authors.initials: JP
authors.lastname: Lee
authors.affiliation: Samsung Advanced Institute of Technology (SAIT), Mt. 14-1, Nongseo-dong, Giheung-gu, Yongin-si, Gyeonggi-do 446-712, Republic of Korea.
authors.forename: Haeng-Deog
authors.initials: HD
authors.lastname: Koh
authors.affiliation: Department of Nanobio Materials and Electronics and Department of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Republic of Korea.
authors.forename: Won-Jeong
authors.initials: WJ
authors.lastname: Shin
authors.affiliation: Department of Chemistry, University of Tennessee, 561 Buehler Hall, 1420 Circle Dr., Knoxville, TN 37996, USA.
authors.forename: Nam-Goo
authors.initials: NG
authors.lastname: Kang
authors.affiliation: Interdisciplinary School of Green Energy, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea.
authors.forename: Soojin
authors.initials: S
authors.lastname: Park
authors.affiliation: Department of Nanobio Materials and Electronics and Department of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 500-712, Republic of Korea. Electronic address: jslee@gist.ac.kr.
authors.forename: Jae-Suk
authors.initials: JS
authors.lastname: Lee
keywords: Binary nanocomposite; Block copolymer; Nanocomposites; Phase transition