We explore the alignment of various achiral liquid crystals on films of aligned double-stranded helical DNA. In all cases and both for the nematic and smectic A phases, we find a distinctly chiral interfacial structure, with the mean orientation of the liquid crystal in contact with the DNA-treated surfaces chirally rotated through a substantial angle with respect to the mean DNA orientation. This rotation originates in the chirality of double-tranded DNA and depends on the liquid crystal molecular structure.Wedicuss the role of dipolar and hydrophobic coupling in determining the observed orientation.

Liquid crystal alignment on a chiral surface : interfacial interaction with sheared DNA films / M. Nakata, G. Zanchetta, M. Buscaglia, T. Bellini, N.A. Clark. - In: LANGMUIR. - ISSN 0743-7463. - 24:18(2008), pp. 10390-10394.

Liquid crystal alignment on a chiral surface : interfacial interaction with sheared DNA films

G. Zanchetta
Secondo
;
M. Buscaglia;T. Bellini
Penultimo
;
2008

Abstract

We explore the alignment of various achiral liquid crystals on films of aligned double-stranded helical DNA. In all cases and both for the nematic and smectic A phases, we find a distinctly chiral interfacial structure, with the mean orientation of the liquid crystal in contact with the DNA-treated surfaces chirally rotated through a substantial angle with respect to the mean DNA orientation. This rotation originates in the chirality of double-tranded DNA and depends on the liquid crystal molecular structure.Wedicuss the role of dipolar and hydrophobic coupling in determining the observed orientation.
Nematic ; Liquid Crystal ; DNA ; Surface alignment ; Chirality
Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)
http://pubs.acs.org/doi/pdf/10.1021/la800639x
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/47848
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