Synthesis of adamantyl polyphosphazene-polystyrene block copolymers, and β-Cyclodextrin-adamantyl side group complexation

Song Yun Cho, Harry R. Allcock

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

Hydrophobic block copolymers with adamantyl polyphosphazene and polystyrene blocks were synthesized via the controlled cationic living polymerization of a phosphoranimine at ambient temperature. β-Cyclodextrins (β-CDs) were then complexed with the adamantyl side groups in aqueous media to generate amphiphilic block copolymers. These underwent micelle formation in an aqueous environment. The micellar behavior of these complexes was monitored using fluorescence techniques, transmission electron microscopy (TEM), and dynamic light scattering. The critical micelle concentration of the adamantyl polyphosphazene-polystyrene block copolymer complexes was 0.925 mg/L. TEM imaging revealed spherically shaped micelles. A mean diameter of 193 nm was measured by dynamic light scattering. It was possible to control micelle formation by changing the amount of β-CD in the aqueous medium at constant block copolymer concentration.

Original languageEnglish (US)
Pages (from-to)4484-4490
Number of pages7
JournalMacromolecules
Volume42
Issue number13
DOIs
StatePublished - Jul 14 2009

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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