Pseudo-single-crystalline self-assembled structure formed from hydrophilic CdSe and hydrophobic Au nanoparticles in the polystyrene and poly(4-vinylpyridine) blocks, respectively, of a polystyrene-b-poly(4- vinylpyridine) diblock copolymer

Ching Mao Huang, Kung-Hwa Wei*, U. Ser Jeng, Hwo Shuenn Sheu

*Corresponding author for this work

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

The long-range ordered tetragonal single-crystal structures formed by loading optimal amounts of hydrophobic Au nanoparticles (NP) and hydrophilic NPs into the respective blocks of a PS-b-P4VP was investigated. A lamellar PS-b-P4VP diblock copolymer was used in all of the experiments. Hydrophilic pyridine-coated CdSe NPs having a core size of 3.5 nm were synthesized using a modified procedure. A periodic structure for the P4VP/CdSe domains along the in-plane direction of the pristine P4VP lamellae. The Pb-b-P4VP/CdSe composite and Au NPs were mixed in THF. The diblock copolymers formed body-centered cubic, face-centered cubic, and simple cubic ordered spherical morphologies. It was observed that presynthesized hydrophilic CdSe NPs and hydrophobic Au NPs can collectively self-organize in the two distinct blocks of a PS-b-P4VP diblock copolymer to form a highly ordered structure.

Original languageEnglish
Pages (from-to)6876-6879
Number of pages4
JournalMacromolecules
Volume41
Issue number19
DOIs
StatePublished - 14 Oct 2008

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