Polyelectrolyte multilayer stamping in aqueous phase and non-contact mode

Sumit Mehrotra, Ilsoon Lee, Chun Liu, Christina Chan

    Research output: Contribution to journalArticle

    • 6 Citations

    Abstract

    Polyelectrolyte multilayer (PEM) transfer printing has been previously achieved by stamping under dry conditions. Here, we show for the first time that PEM can be transferred from a stamp to the base substrate under aqueous conditions whereby the two surfaces are in a noncontact mode. Degradable multilayers of (PAA/PEG)10.5 followed by nondegradable multilayers of (PDAC/SPS)80.5 were fabricated under acidic pH conditions on either PDMS or glass (stamp), and subsequently transferred over top of another multilayer prepared on a different substrate (base substrate), with a spacing of ∼200 μm between the stamping surface and the base substrate. This multilayer transfer was performed under physiological pH conditions. This process is referred to herein as noncontact, aqueous-phase multilayer (NAM) transfer. NAM transfer can be useful for applications such as fabricating three-dimensional (3-D) cellular scaffolds. We attempted to create a 3-D cellular scaffold using NAM transfer, and characterized the scaffolds with conventional and fluorescence microscopy.

    Original languageEnglish (US)
    Pages (from-to)8851-8858
    Number of pages8
    JournalIndustrial and Engineering Chemistry Research
    Volume50
    Issue number15
    DOIs
    StatePublished - Aug 3 2011

    Profile

    Micelles
    Multilayers
    Fluorescence Microscopy
    Glass
    Substrates
    Magnesium Deficiency
    Stamping
    Scaffolds
    Polyelectrolytes
    Edema Disease of Swine
    Fluorescence microscopy
    Polyethylene glycols
    Printing

    ASJC Scopus subject areas

    • Chemical Engineering(all)
    • Chemistry(all)
    • Industrial and Manufacturing Engineering

    Cite this

    Polyelectrolyte multilayer stamping in aqueous phase and non-contact mode. / Mehrotra, Sumit; Lee, Ilsoon; Liu, Chun; Chan, Christina.

    In: Industrial and Engineering Chemistry Research, Vol. 50, No. 15, 03.08.2011, p. 8851-8858.

    Research output: Contribution to journalArticle

    Mehrotra, Sumit; Lee, Ilsoon; Liu, Chun; Chan, Christina / Polyelectrolyte multilayer stamping in aqueous phase and non-contact mode.

    In: Industrial and Engineering Chemistry Research, Vol. 50, No. 15, 03.08.2011, p. 8851-8858.

    Research output: Contribution to journalArticle

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    abstract = "Polyelectrolyte multilayer (PEM) transfer printing has been previously achieved by stamping under dry conditions. Here, we show for the first time that PEM can be transferred from a stamp to the base substrate under aqueous conditions whereby the two surfaces are in a noncontact mode. Degradable multilayers of (PAA/PEG)10.5 followed by nondegradable multilayers of (PDAC/SPS)80.5 were fabricated under acidic pH conditions on either PDMS or glass (stamp), and subsequently transferred over top of another multilayer prepared on a different substrate (base substrate), with a spacing of ∼200 μm between the stamping surface and the base substrate. This multilayer transfer was performed under physiological pH conditions. This process is referred to herein as noncontact, aqueous-phase multilayer (NAM) transfer. NAM transfer can be useful for applications such as fabricating three-dimensional (3-D) cellular scaffolds. We attempted to create a 3-D cellular scaffold using NAM transfer, and characterized the scaffolds with conventional and fluorescence microscopy.",
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