ArticleLangmuir : the ACS journal of surfaces and colloids2011
Correlating the compliance and permeability of photo-cross-linked polyelectrolyte multilayers.
Article in Langmuir : the ACS journal of surfaces and colloids, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Collective epithelial cell sheet adhesion and migration on polyelectrolyte multilayers with uniform and gradients of compliance.Experimental cell research · 2016Article
- Cell durotaxis on polyelectrolyte multilayers with photogenerated gradients of modulus.Biomacromolecules · 2013Article
- Homogeneity, modulus, and viscoelasticity of polyelectrolyte multilayers by nanoindentation: refining the buildup mechanism.Langmuir : the ACS journal of surfaces and colloids · 2012Article
- Cytotoxicity of free versus multilayered polyelectrolytes.Biomacromolecules · 2011Article
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Authors and funding
3 authors.
Funding
Abstract
Photo-cross-linkable polyelectrolyte multilayers were made from poly(allylamine) (PAH) and poly(acrylic acid) (PAA) modified with a photosensitive benzophenone. Nanoindentation, using atomic force microscopy (AFM) of these and unmodified PAH/PAA multilayers, was used to assess their mechanical properties in situ under an aqueous buffer. Under the conditions employed (and a 20 nm radius AFM tip), reliable nanoindentations that appeared to be decoupled from the properties of the silicon substrate were obtained for films greater than 150 nm in thickness. A strong difference in the apparent modulus was observed for films terminated with positive as compared to negative polyelectrolytes. Films terminated with PAA were more glassy, suggesting better charge matching of polyelectrolytes. Multilayers irradiated for up to 100 min showed a smooth, controlled increase in the modulus with little change in the water contact angle. The permeability to iodide ion, measured electrochemically, also decreased in a controlled fashion.
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