Bilayer and trilayer crystalline formation by collapsing behenic acid monolayers at gas/aqueous interfaces
| Title | Bilayer and trilayer crystalline formation by collapsing behenic acid monolayers at gas/aqueous interfaces |
| Publication Type | Journal Article |
| Year of Publication | 2008 |
| Authors | Bu W, Vaknin D |
| Journal Title | Langmuir |
| Volume | 24 |
| Pages | 441-447 |
| Date Published | Jan |
| Type of Article | Article |
| ISBN Number | 0743-7463 |
| Accession Number | ISI:000252208200018 |
| Keywords | air-water-interface, langmuir monolayers, reflection, x-ray-diffraction |
| Abstract | X-ray reflectivities and grazing incidence X-ray diffractions of behenic acid (BA) monolayers compressed to the collapse region reveal that the resulting structures are reproducible and exhibit a high degree of order. The structures of the collapsed monolayers depend on the subphase solution. On pure water, the collapsed monolayer forms a stable crystalline trilayer structure. For monolayers spread on Ca2+ solutions, we find that an inverted bilayer structure is formed; that is, stretched BA-Ca-BA, (calcium dibehenate, with calcium ions bridging the polar headgroups) forms a monolayer with the hydrophobic tails in contact with the water surface. |
| DOI | 10.1021/la702107e |
| Alternate Journal | Langmuir |
