Grazing-incidence x-ray diffraction study of Langmuir films of amphiphilic monodendrons.
We have used pressure-area isotherms and grazing-incidence x-ray diffraction to study structures of Langmuir films of first-generation monodendrons with two or three peripheral alkyl chains. Unlike the structures observed in their bulk liquid crystalline mesophases, these multichain monodendrons form either a centered rectangular lattice with molecular axes tilted toward nearest neighbors or an oblique lattice with molecular axes tilted in low-symmetry directions.
Pao
Wen-Jung
WJ
Department of Physics and Astronomy, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
Zhang
Fan
F
Heiney
Paul A
PA
Mitchell
Catherine
C
Cho
Wook-Dong
WD
Percec
Virgil
V