The structure of Langmuir films of long diols on mercury

Lilach Tamam, Benjamin M. Ocko, Naotake Nakamura, Yoshihiro Ogawa, Moshe Deutsch

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Surface-specific X-ray methods and surface tensiometry are used to study the structure of Langmuir films of alkyl diols with 15 ≤ n ≤ 24 carbons supported on a liquid mercury subphase. Phases of either mono- or bi-layers of surface-parallel molecules are found, depending on surface pressure. Although both ends of the diol molecule can form hydrogen bonds, as do corresponding-length α,ω-alkyldiacids, the consequent 2D order occurring in diacids is not observed here. Instead, one-dimensional order along the chain-normal direction is established for the longer diols, exhibiting two length scales, corresponding both to the molecular width, and differing by ∼3%. The reasons for, and molecular interactions leading to, this structure are discussed.

Original languageEnglish
Pages (from-to)11204-11213
Number of pages10
JournalSoft Matter
Issue number47
StatePublished - 21 Dec 2013


Dive into the research topics of 'The structure of Langmuir films of long diols on mercury'. Together they form a unique fingerprint.

Cite this