Thermally switchable aligned nanopores by magnetic-field directed self-assembly of block copolymers

Manesh Gopinadhan; Prashant Deshmukh; Youngwoo Choo; Pawel W Majewski; Olgica Bakajin; Menachem Elimelech; Rajeswari M Kasi; Chinedum O Osuji

doi:10.1002/adma.201401569

Thermally switchable aligned nanopores by magnetic-field directed self-assembly of block copolymers

Adv Mater. 2014 Aug 13;26(30):5148-54. doi: 10.1002/adma.201401569. Epub 2014 Jun 4.

Authors

Manesh Gopinadhan¹, Prashant Deshmukh, Youngwoo Choo, Pawel W Majewski, Olgica Bakajin, Menachem Elimelech, Rajeswari M Kasi, Chinedum O Osuji

Affiliation

¹ Department of Chemical and Environmental Engineering, Yale UniversityNew Haven, CT, 06511, USA.

PMID: 24894877
DOI: 10.1002/adma.201401569

Abstract

A scalable approach for developing large area polymer films, with stimuli responsive vertically aligned nanopores is reported. Magnetic fields are used to create highly aligned hexagonally packed block copolymer cylindrical microdomains with order parameters exceeding 0.95. Selective etch removal of material yields nanoporous films which demonstrate reversible pore closure on heating.

Keywords: aligned polymers; directed self-assembly; magnetic field alignment of block copolymers; nanoporous membranes.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.