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Pseudobilayer Vesicle Formation via Layer‐by‐Layer Assembly of Hydrophobically Modified Polymers on Sacrificial Substrates
Author(s) -
Khopade A. J.,
Möhwald H.
Publication year - 2005
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200400500
Subject(s) - polyelectrolyte , materials science , bilayer , polymer , chemical engineering , vesicle , copolymer , substrate (aquarium) , layer (electronics) , layer by layer , polymer chemistry , colloid , membrane , nanotechnology , composite material , chemistry , biochemistry , oceanography , engineering , geology
A bilayer of a hydrophobically modified polyelectrolyte, octadecyl poly(acrylamide) (PAAm), sandwiched between the layers of a hydrophilic polyelectrolyte, poly(ethyleneimine) (PEI), is prepared by the sequential electrostatic–hydrophobic–electrostatic‐interaction‐driven self‐assembly on planar and colloid substrates. This process results in a PEI/[PAAm] 2 /PEI‐multilayer‐coated substrate. The removal of a PAA/PEI/[PAAm] 2 /PEI‐multilayer‐coated decomposable colloidal template produces hollow capsules. Irregular hydrophobic domains of the [PAAm] 2 bilayer in the PEI/[PAAm] 2 /PEI‐multilayer capsule are infiltrated with a lipid to obtain a uniform, distinct hydrophobic layer, imparting the capsule with a pseudobilayer vesicle structure.