CdS/C60 binary nanocomposite films prepared via phase transition of PS-b-P2VP block copolymer

Jung-Pil Lee; Haeng-Deog Koh; Won-Jeong Shin; Nam-Goo Kang; Soojin Park; Jae-Suk Lee

doi:10.1016/j.jcis.2013.11.014

CdS/C60 binary nanocomposite films prepared via phase transition of PS-b-P2VP block copolymer

J Colloid Interface Sci. 2014 Mar 1:417:166-70. doi: 10.1016/j.jcis.2013.11.014. Epub 2013 Nov 19.

Authors

Jung-Pil Lee¹, Haeng-Deog Koh², Won-Jeong Shin³, Nam-Goo Kang⁴, Soojin Park⁵, Jae-Suk Lee⁶

Affiliations

¹ 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.
² Samsung Advanced Institute of Technology (SAIT), Mt. 14-1, Nongseo-dong, Giheung-gu, Yongin-si, Gyeonggi-do 446-712, Republic of Korea.
³ 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.
⁴ Department of Chemistry, University of Tennessee, 561 Buehler Hall, 1420 Circle Dr., Knoxville, TN 37996, USA.
⁵ Interdisciplinary School of Green Energy, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, Republic of Korea.
⁶ 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.

PMID: 24407673
DOI: 10.1016/j.jcis.2013.11.014

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.

Keywords: Binary nanocomposite; Block copolymer; Nanocomposites; Phase transition.