Document Detail

Slow Single Molecule Diffusion in Liquid Crystals.
MedLine Citation:
PMID:  23083329     Owner:  NLM     Status:  Publisher    
We report on measurements of single molecule Brownian motion in liquid crystals unravelling the anisotropic mobility of individual dye molecules. This anisotropic Brownian motion is directly correlated with the structural properties in a smectic A (8CB) and a nematic (5CB) liquid crystal sample cell on the µm-scale using polarization contrast microscopy. A considerably slower mobility of dye molecules is found as compared to self diffusion measurements by NMR, while anisotropy values compare well to recent literature data. This is suggested to be related to local distortions of the director structure around the dye molecules.
Martin Pumpa; Frank Cichos
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-19
Journal Detail:
Title:  The journal of physical chemistry. B     Volume:  -     ISSN:  1520-5207     ISO Abbreviation:  J Phys Chem B     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-22     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101157530     Medline TA:  J Phys Chem B     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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