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Experiments on convective in‐plane orientation of monolayers
Author(s) -
Kurthen Christof,
Nitsch Walter,
Stöckelhuber Werner
Publication year - 1991
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19910460153
Subject(s) - monolayer , materials science , perpendicular , polymer , rod , dichroism , orientation (vector space) , substrate (aquarium) , compression (physics) , composite material , optics , geometry , nanotechnology , physics , geology , medicine , oceanography , mathematics , alternative medicine , pathology
Flow‐compressed monolayers of stiff rod‐like polymers (poly‐glutamates) mixed with oleophilic tracer dyes showed significant in‐plane dichroism of dye absorption at the water surface, indicating lateral ordering of polyglutamate‐rods more or less “perpendicular” to flow direction. During LB‐deposition the lateral orientation of dye‐ and polymer‐molecules was maintained, in‐plane orientation of the LB‐film was thus depending on substrate‐orientation relative to flow‐direction. Identical monolayers compressed in a regular Langmuir‐trough (with moving barrier) showed no large‐scale ordering at the water surface, but during film‐transfer polymer matrix and dye were oriented in dipping direction, irrespective of substrate orientation relative to compression direction.