Self-assembly of rigid macromolecules to create ordered thin films
Conference
·
OSTI ID:141787
- Univ. of North Carolina, Chapel Hill, NC (United States)
Poly({gamma}-benzyl-L-glutamate) (PBLG) derivatized at its N-terminus with lipoic acid, a disulfide-containing moiety, self-assembles on gold from helicogenic solvents to give a thin film with the polypetide {alpha}-helices orientation distribution different from the planar orientation in the unlabeled, physisorbed PBLG films (control) and Langmuir-Blodgett monolayers. These films were studied by angle-dependent XPS, reflection-absorption FTIR spectroscopy, ellipsometry, and contact angle measurements. The IR dichroic properties of the amide vibrational frequencies, in particular, were used to infer the orientational distribution of the helices in the self-assembled film.
- OSTI ID:
- 141787
- Report Number(s):
- CONF-930304--
- Country of Publication:
- United States
- Language:
- English
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