Abstract
We describe molecule-by-molecule observations, using single molecule fluorescence spectroscopy, of the ordering of the components in a nematic phase formed by a binary mixture of short and long rods. A stiff conjugated polymer, MEH-PPV (poly[2-methoxy-5-((2-ethylhexyl)oxy)-l,4-phenylenevinylene]), present at very low concentrations in a binary nematic - nematic phase with the mesogen 5CB (4-n-pentyl-4′-cyanobiphenyl) is investigated. We observe near-perfect orientational order of the stiff, rodlike conjugated polymers translating through a planar nematic phase. This represents striking experimental evidence for the predicted enhanced alignment of long rods in the nematic phase of a binary mixture of rods.
Original language | English (US) |
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Pages (from-to) | 4593-4596 |
Number of pages | 4 |
Journal | Journal of Physical Chemistry B |
Volume | 108 |
Issue number | 15 |
DOIs | |
State | Published - Apr 15 2004 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
- Materials Chemistry