Document Detail

Freestanding polyelectrolyte films as sensors for osmotic pressure.
MedLine Citation:
PMID:  16929555     Owner:  NLM     Status:  MEDLINE    
Freestanding ultrathin polyelectrolyte-multilayer membranes, transferred to topographically structured polydimethylsiloxane (PDMS), are used as mechanical sensors. Due to the membranes' semipermeability, high-molecular-weight molecules can be either entrapped inside them or excluded, thus generating an osmotic pressure. This leads to a deformation. We investigate the deformation as a function of the osmotic pressure and present an analytical theory that fully describes the data. Thus, osmotic pressures can be determined quantitatively. The individual osmotic-sensitive elements have only microscopic dimensions, and arrays can be easily produced.
Marc Nolte; Ingo Dönch; Andreas Fery
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Chemphyschem : a European journal of chemical physics and physical chemistry     Volume:  7     ISSN:  1439-4235     ISO Abbreviation:  Chemphyschem     Publication Date:  2006 Sep 
Date Detail:
Created Date:  2006-09-11     Completed Date:  2007-07-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100954211     Medline TA:  Chemphyschem     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1985-9     Citation Subset:  IM    
Max-Planck-Institut für Kolloid und Grenzflächenforschung Wissenschaftspark Golm, 14424 Potsdam, Germany.
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MeSH Terms
Chemistry, Physical / methods
Dimethylpolysiloxanes / chemistry*
Electrolytes / chemistry*
Membranes, Artificial
Microscopy, Confocal / methods
Osmolar Concentration
Osmotic Pressure*
Silicon / chemistry*
Silicones / chemistry*
Solvents / chemistry
Surface Properties
Time Factors
Reg. No./Substance:
0/Dimethylpolysiloxanes; 0/Electrolytes; 0/Membranes, Artificial; 0/Silicones; 0/Solvents; 63148-62-9/baysilon; 7440-21-3/Silicon

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