title: Grazing-incidence x-ray diffraction study of Langmuir films of amphiphilic monodendrons.
abstract: 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.
authors.affiliation: Department of Physics and Astronomy, and Laboratory for Research on the Structure of Matter, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
authors.forename: Wen-Jung
authors.initials: WJ
authors.lastname: Pao
authors.forename: Fan
authors.initials: F
authors.lastname: Zhang
authors.forename: Paul A
authors.initials: PA
authors.lastname: Heiney
authors.forename: Catherine
authors.initials: C
authors.lastname: Mitchell
authors.forename: Wook-Dong
authors.initials: WD
authors.lastname: Cho
authors.forename: Virgil
authors.initials: V
authors.lastname: Percec