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  pH-amplified exponential growth multilayers: a facile method to develop hierarchical micro- and nanostructured surfaces

Fu, J., Ji, J., Shen, L., Küller, A., Rosenhahn, A., Shen, J., et al. (2009). pH-amplified exponential growth multilayers: a facile method to develop hierarchical micro- and nanostructured surfaces. Langmuir, 25(2), 672-675. doi:10.1021/la803692v.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0001-9AF0-2 Version Permalink: https://hdl.handle.net/21.11116/0000-0001-9AF1-1
Genre: Journal Article

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Langmuir_25_2009_672.pdf (Any fulltext), 904KB
 
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https://pubs.acs.org/doi/pdf/10.1021/la803692v (Any fulltext)
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 Creators:
Fu, Jinhong, Author
Ji, Jian, Author
Shen, Liyan, Author
Küller, Alexander, Author
Rosenhahn, Axel, Author
Shen, Jiacong, Author
Grunze, Michael1, Author           
Affiliations:
1Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_2364731              

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 Abstract: We report a direct method to amplify the exponential growth of multilayers significantly by the alternating deposition of polyethylenimine (PEI) at high pH and poly(acrylic acid) (PAA) at low pH. The alternating pH switches the degree of ionization of the polyelectrolytes in the multilayers, which enhances the diffusion of PEI into and out of the film and hence increases the deposited mass per cycle. The synergetic action of the pH-tunable charge density and diffusivity of the weak polyelectrolytes provides a new method for the enhanced growth of multilayers with hierarchal micro- and nanostructured surfaces.

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Language(s): eng - English
 Dates: 2008-11-062008-12-022008-12-162009-01-20
 Publication Status: Issued
 Pages: 4
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/la803692v
URI: https://www.ncbi.nlm.nih.gov/pubmed/19177642
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Title: Langmuir
Source Genre: Journal
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Publ. Info: Columbus, OH : American Chemical Society
Pages: - Volume / Issue: 25 (2) Sequence Number: - Start / End Page: 672 - 675 Identifier: ISSN: 0743-7463
CoNE: https://pure.mpg.de/cone/journals/resource/954925541194