TY - JOUR
T1 - Switchable pH-responsive polymeric membranes prepared via block copolymer micelle assembly
AU - Nunes, Suzana Pereira
AU - Behzad, Ali Reza
AU - Hooghan, Bobby
AU - Sougrat, Rachid
AU - Karunakaran, Madhavan
AU - Neelakanda, Pradeep
AU - Vainio, Ulla
AU - Peinemann, Klaus-Viktor
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2011/4/25
Y1 - 2011/4/25
N2 - A process is described to manufacture monodisperse asymmetric pH-responsive nanochannels with very high densities (pore density >2 × 10 14 pores per m2), reproducible in m2 scale. Cylindric pores with diameters in the sub-10 nm range and lengths in the 400 nm range were formed by self-assembly of metal-block copolymer complexes and nonsolvent-induced phase separation. The film morphology was tailored by taking into account the stability constants for a series of metal-polymer complexes and confirmed by AFM. The distribution of metal-copolymer micelles was imaged by transmission electron microscopy tomography. The pH response of the polymer nanochannels is the strongest reported with synthetic pores in the nm range (reversible flux increase of more than 2 orders of magnitude when switching the pH from 2 to 8) and could be demonstrated by cryo-field emission scanning electron microscopy, SAXS, and ultra/nanofiltration experiments. © 2011 American Chemical Society.
AB - A process is described to manufacture monodisperse asymmetric pH-responsive nanochannels with very high densities (pore density >2 × 10 14 pores per m2), reproducible in m2 scale. Cylindric pores with diameters in the sub-10 nm range and lengths in the 400 nm range were formed by self-assembly of metal-block copolymer complexes and nonsolvent-induced phase separation. The film morphology was tailored by taking into account the stability constants for a series of metal-polymer complexes and confirmed by AFM. The distribution of metal-copolymer micelles was imaged by transmission electron microscopy tomography. The pH response of the polymer nanochannels is the strongest reported with synthetic pores in the nm range (reversible flux increase of more than 2 orders of magnitude when switching the pH from 2 to 8) and could be demonstrated by cryo-field emission scanning electron microscopy, SAXS, and ultra/nanofiltration experiments. © 2011 American Chemical Society.
UR - http://hdl.handle.net/10754/561780
UR - https://pubs.acs.org/doi/10.1021/nn200484v
UR - http://www.scopus.com/inward/record.url?scp=80051479882&partnerID=8YFLogxK
U2 - 10.1021/nn200484v
DO - 10.1021/nn200484v
M3 - Article
C2 - 21504167
SN - 1936-0851
VL - 5
SP - 3516
EP - 3522
JO - ACS Nano
JF - ACS Nano
IS - 5
ER -