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

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Kim, D. H. and Lau, K. H. A. and Joo, W. and Peng, J. and Jeong, U. and Hawker, C. J. and Kim, J. K. and Russell, T. P. and Knoll, W. (2006) An optical waveguide study on the nanopore formation in block copolymer/homopolymer thin films by selective solvent swelling. Journal of Physical Chemistry B, 110 (31). pp. 15381-15388. ISSN 1520-6106 (https://doi.org/10.1021/jp0630469)

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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.

ORCID iDs

Kim, D. H., Lau, K. H. A. ORCID logoORCID: https://orcid.org/0000-0003-3676-9228, Joo, W., Peng, J., Jeong, U., Hawker, C. J., Kim, J. K., Russell, T. P. and Knoll, W.;
  • Item type:Article
    ID code:45541
    Dates:
    Date
    Event
    2006
    Published
    19 July 2006
    Published Online
    Notes:M1 - 31 Times Cited: 20
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Depositing user: Pure Administrator
    Date deposited:01 Nov 2013 15:55
    Last modified:11 Nov 2024 10:32
    URI:https://strathprints.strath.ac.uk/id/eprint/45541
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