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An optical waveguide study on the nanopore formation in block copolymer/homopolymer thin films by selective solvent swelling

Title
An optical waveguide study on the nanopore formation in block copolymer/homopolymer thin films by selective solvent swelling
Authors
Kim D.H.Lau K.H.A.Joo W.Peng J.Jeong U.Hawker C.J.Kim J.K.Russell T.P.Knoll W.
Ewha Authors
김동하
SCOPUS Author ID
김동하scopus
Issue Date
2006
Journal Title
Journal of Physical Chemistry B
ISSN
1520-6106JCR Link
Citation
vol. 110, no. 31, pp. 15381 - 15388
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
Thin films of mixtures of asymmetric poly(styrene-block-methyl methacrylate) (PS-b-PMMA) diblock copolymers and PMMA homopolymers with cylindrical PMMA microdomains oriented normal to the substrate surface were used to couple optical modes in the Kretschmann configuration, and their optical properties were investigated by optical waveguide spectroscopy (OWS). The nanopore formation in the block copolymer (BCP) waveguide layer via selective solvent swelling and subsequent reannealing was monitored in terms of shifts in the coupling mode angles. The sequential swelling/reannealing of the initial mixture film resulted in a number of discrete or partially interconnected pores instead of cylindrical pores with a high aspect ratio. The simultaneous processes occurring inside and on top of the BCP waveguide layer were discerned independently with high selectivity for p- and s-polarization. © 2006 American Chemical Society.
DOI
10.1021/jp0630469
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자연과학대학 > 화학·나노과학전공 > Journal papers
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