mz500484k_si_001.pdf (3.66 MB)
Controlled Nanopores by Supramolecular Assembly of End-Functionalized Dendrimer and Homopolymer Blend
journal contribution
posted on 2014-11-18, 00:00 authored by Giyoung Song, Ju Eun Kim, Suk Man Cho, Seong
Ik Jeon, Hui Joon Park, June Huh, Cheol-Hee Ahn, Cheolmin ParkSupramolecular assembly of end-functionalized
polymers, forming
block copolymer-like supramolecules based on ionic interaction, has
been
utilized as a simple and facile method for generating functionalized
nanoporous thin film. Here, the binary blend film of aminated poly(ethylene
oxide) dendrimer (APEO-G) and sulfonated polystyrene (SPS) at a stoichiometric
composition after benzene/water solvent vapor annealing exhibits spherical
domains in multilayers over a large area. By controlling the number
of end-functional arms of dendrimer via divergent ring-opening polymerization
of ethylene oxide as well as the molecular weights of SPS, the domain
sizes can be controlled ranging from mainly 34 to 54 nm, even to 131
nm. Our supramolecular-assembly system provides an alternative approach
to fabricating a functional nanotemplate by easily etching domains
with selective solvent treatment and leaving functional groups at
the pore surfaces.