Self-assembled particle monolayers on polyelectrolyte multilayers: Particle size effects on formation, structure, and optical properties

Jin Soo Ahn, Paula T. Hammond, Michael F. Rubner, Ilsoon Lee

    Research output: Contribution to journalArticle

    • 62 Citations

    Abstract

    Monolayers of charged polystyrene latex particles ranging in size from 100 nm to 10 μm were deposited on oppositely charged polyelectrolyte multilayers (PEMs) by electrostatic interactions and capillary forces. Ultrathin PEMs (∼30 nm) formed on a glass slide provided an excellent underlying adhesive layer. As the sample surface was being dried, strong capillary forces between particles resulted in a unique pattern of particle monolayers (i.e., two-dimensional (2-D) particle aggregates). The resulting topographical structure of the coatings strongly influenced the transmission of visible light through the slides. The total and specular transmittances showed three different characteristics as a function of particle size: (1) anti-reflection, when the particle diameter (Dparticle) is around a quarter of the wavelength of the incident visible light (Dparticle ∼ λ vis/4), (2) diffraction, when the Dparticle is equivalent to the wavelength of the incident beam (Dparticle ∼ λvis), and (3) diffusive scattering when the D particle is bigger than the wavelength of the incident beam (D particle ∼ λvis). Additionally, for the first time, the monolayer coverage and fractal-dimension analyses have been reported over a wide range of particle sizes. Functional groups present in these coatings allow further customization via chemical modification.

    Original languageEnglish (US)
    Pages (from-to)45-53
    Number of pages9
    JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
    Volume259
    Issue number1-3
    DOIs
    StatePublished - May 31 2005

    Profile

    Monolayers
    Clemastine
    Polyelectrolytes
    Multilayers
    Particle size
    Wavelength
    Pacific Islands
    Magnesium Deficiency
    Micelles
    Coatings
    Acetabularia
    Chemical modification
    Fractal dimension
    Coulomb interactions
    Latexes
    Functional groups
    Particles (particulate matter)
    Polystyrenes
    Adhesives
    Optical properties

    Keywords

    • Anti-reflection
    • Diffraction
    • Diffusive scattering
    • Optical properties
    • Particle monolayer
    • Particle size
    • Polyelectrolyte multilayers

    ASJC Scopus subject areas

    • Colloid and Surface Chemistry
    • Physical and Theoretical Chemistry

    Cite this

    Self-assembled particle monolayers on polyelectrolyte multilayers : Particle size effects on formation, structure, and optical properties. / Ahn, Jin Soo; Hammond, Paula T.; Rubner, Michael F.; Lee, Ilsoon.

    In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 259, No. 1-3, 31.05.2005, p. 45-53.

    Research output: Contribution to journalArticle

    Ahn, Jin Soo; Hammond, Paula T.; Rubner, Michael F.; Lee, Ilsoon / Self-assembled particle monolayers on polyelectrolyte multilayers : Particle size effects on formation, structure, and optical properties.

    In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 259, No. 1-3, 31.05.2005, p. 45-53.

    Research output: Contribution to journalArticle

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