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Issue 29, 2012
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Microcontact printing of polyelectrolytes on PEG using an unmodified PDMS stamp for micropatterning nanoparticles, DNA, proteins and cells

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Abstract

A facile microcontact printing method has been developed based on directly printing polyelectrolytes on a glass or polystyrene surface coated with poly(ethylene glycol) (PEG) silane using an unmodified poly(dimethyl siloxane) (PDMS) stamp. The method is applicable to a variety of polyelectrolytes including poly(allylamine hydrochloride) (PAH), poly(diallyldimethylammonium chloride) (PDAC), branched and linear poly(ethylene imine) (PEI), poly-L-lysine (PLL), chitosan, double stranded DNA, and poly(sodium 4-styrene sulfonate) (PSS). The printed polyelectrolyte structures, which include monolayer, bilayer, and stretched molecular bundles, are stable in aqueous solutions and have been used as templates for micropatterning quantum dot nanoparticles, DNA, proteins, and live cells.

Graphical abstract: Microcontact printing of polyelectrolytes on PEG using an unmodified PDMS stamp for micropatterning nanoparticles, DNA, proteins and cells

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Publication details

The article was received on 11 Apr 2012, accepted on 23 May 2012 and first published on 25 Jun 2012


Article type: Paper
DOI: 10.1039/C2SM25835H
Soft Matter, 2012,8, 7630-7637

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    Microcontact printing of polyelectrolytes on PEG using an unmodified PDMS stamp for micropatterning nanoparticles, DNA, proteins and cells

    Z. Wang, P. Zhang, B. Kirkland, Y. Liu and J. Guan, Soft Matter, 2012, 8, 7630
    DOI: 10.1039/C2SM25835H

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