6533b851fe1ef96bd12a96aa

RESEARCH PRODUCT

Polyvinylferrocene-Based Amphiphilic Block Copolymers Featuring Functional Junction Points for Cross-Linked Micelles

Markus GalleiHolger FreyJohannes ElbertJan MorsbachSvenja WinzenChristian Rüttiger

subject

Polymers and PlasticsEthylene oxideAllyl glycidyl etherOrganic Chemistrytechnology industry and agriculture02 engineering and technology010402 general chemistry021001 nanoscience & nanotechnologyPhotochemistry01 natural sciencesMicelle0104 chemical sciencesInorganic Chemistrychemistry.chemical_compoundchemistryPolymerizationDynamic light scatteringAmphiphilePolymer chemistryMaterials ChemistryCopolymer0210 nano-technologyEthylene glycol

description

The synthesis of high-molecular-weight, well-defined poly(vinylferrocene)-block-poly(ethylene glycol) (PVFc-b-PEG) diblock copolymers (Mn = 13 000–44 000 g mol–1; Đ = 1.29–1.34) with precisely one allyl group at the junction point is introduced. Allyl glycidyl ether (AGE) was used to end-functionalize PVFc, resulting in hydroxyl functional macroinitiators for the oxyanionic polymerization of ethylene oxide. The self-assembly behavior of the amphiphilic PVFc-b-PEG copolymers in water has been investigated in a detailed manner, using dynamic light scattering (DLS) and transmission electron microscopy (TEM). The redox activity of the PVFc block was confirmed by UV/vis spectroscopy, while cyclovoltammetry (CV) measurements were carried out to support the stability and full reversibility of the ferrocene/ferrocenium redox couple. Both formation and dissociation of the macromolecular self-assemblies in aqueous solution via oxidation and reduction of the PVFc segments were evidenced by TEM and DLS. The dye Nile ...

yearjournalcountryeditionlanguage
2016-04-21Macromolecules
https://doi.org/10.1021/acs.macromol.6b00514