NDLI: Homeotropic Self-Alignment of Discotic Liquid Crystals for Nanoporous Polymer Films

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Homeotropic Self-Alignment of Discotic Liquid Crystals for Nanoporous Polymer Films

Content Provider	Semantic Scholar
Author	Lugger, Jody A. M. Mulder, Dirk Jan Bhattacharjee, Subham Sijbesma, Rint P.
Copyright Year	2018
Abstract	Nanostructured polymer films with continuous, membrane-spanning pores from polymerizable hexagonal columnar discotic liquid crystals (LCs) were fabricated. A robust alignment method was developed to obtain homeotropic alignment of columns between glass surfaces by adding a small amount of a tri(ethylene glycol) modified analogue of the mesogen as a dopant that preferentially wets glass. The homeotropic LC alignment was fixated via a photoinitiated free radical copolymerization of a high-temperature tolerant trisallyl mesogen with a divinyl ester. Removal of the hydrogen-bonded template from the aligned columns afforded a nanoporous network with pores of nearly 1 nm in diameter perpendicular to the surface, and without noticeable collapse of the nanopores. The effect of pore orientation was demonstrated by an adsorption experiment in which homeotropic film showed a threefold increase in the initial uptake rate of methylene blue compared to planarly aligned films.
Starting Page	6714
Ending Page	6724
Page Count	11
File Format	PDF HTM / HTML
DOI	10.1021/acsnano.8b01822
Alternate Webpage(s)	https://pure.tue.nl/ws/portalfiles/portal/102942453/acsnano.8b01822.pdf
PubMed reference number	29975513
Alternate Webpage(s)	https://doi.org/10.1021/acsnano.8b01822
Journal	Medline
Volume Number	12
Journal	ACS nano
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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