Studies of Langmuir-Blodgett films of poly(1-benzyl-L-histidine) -stearic acid mixtures

Taiji Furuno, Hiroyuki Sasabe, Ryouhei Nagata, Toshihiro Akaike

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The structures of monolayers and multilayers of poly-1-benzyl-L-histidine (PBLH)-stearic acid (StA) mixtures have been investigated. The force-area (FA) curves of the monolayer had a plateau region which can be attributed to a transition from the liquid to the solid phase rather than that from a monolayer to a bilayer, as reported for α-helical polypeptides such as poly-γ-benzyl-L-glutamate. The cyclic FA curve measurements, i.e. the cycles of compression and successive expansion of the monolayer, showed that the structural change in the monolayer from the liquid to the solid phase was practically reversible. The FA curves of the mixed monolayer showed a strong dependence on the cation species in the subphase. The mixed multilayers prepared by a horizontal lifting method gave X-ray diffraction patterns which suggested that they had a Y-type structure, despite the fact that this method would lead one to expect the formation of an X-type structure. Studies on the relationship between the UV absorption spectra of the Langmuir-Blodgett films and the surface pressure for deposition suggested that a change in the orientation of PBLH chromophores occured at the plateau region in the FA curves.

Original languageEnglish
Pages (from-to)141-152
Number of pages12
JournalThin Solid Films
Volume133
Issue number1-4
DOIs
Publication statusPublished - 1985
Externally publishedYes

Fingerprint

Stearic acid
histidine
Langmuir Blodgett films
Langmuir-Blodgett films
Monolayers
acids
curves
solid phases
plateaus
glutamates
polypeptides
Multilayers
liquids
chromophores
diffraction patterns
Polypeptides
Liquids
Chromophores
absorption spectra
cations

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

Cite this

Studies of Langmuir-Blodgett films of poly(1-benzyl-L-histidine) -stearic acid mixtures. / Furuno, Taiji; Sasabe, Hiroyuki; Nagata, Ryouhei; Akaike, Toshihiro.

In: Thin Solid Films, Vol. 133, No. 1-4, 1985, p. 141-152.

Research output: Contribution to journalArticle

Furuno, Taiji ; Sasabe, Hiroyuki ; Nagata, Ryouhei ; Akaike, Toshihiro. / Studies of Langmuir-Blodgett films of poly(1-benzyl-L-histidine) -stearic acid mixtures. In: Thin Solid Films. 1985 ; Vol. 133, No. 1-4. pp. 141-152.
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