Fabrication of Langmuir–Blodgett Films of β-carotene by Flow-orientation

Using the Langmuir–Blodgett (LB) method together with the flow-orientation technique which controls the flow of a film material on the subphase, we successfully fabricated a well-ordered film of β-carotene. The surface pressure–area isotherm suggested that β-carotene in a Langmuir monolayer oriented...

Full description

Saved in:
Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 39; no. 6R; p. 3557
Main Authors Toshihiko Matsuura, Toshihiko Matsuura, Akira Nishimura, Akira Nishimura, Yuhei Shimoyama, Yuhei Shimoyama
Format Journal Article
LanguageEnglish
Published 2000
Online AccessGet full text

Cover

More Information
Summary:Using the Langmuir–Blodgett (LB) method together with the flow-orientation technique which controls the flow of a film material on the subphase, we successfully fabricated a well-ordered film of β-carotene. The surface pressure–area isotherm suggested that β-carotene in a Langmuir monolayer oriented perpendicular to the water surface. The flow-orientation method enhanced the molecular orientation in the monolayer. X-ray diffraction patterns indicated that the orientation of β-carotene in the LB films correlates with the number of layers. The films with five and nine layers yielded tilt angles of 55° and 40°, respectively. Fourier-transform infrared spectroscopy revealed that ionone rings of β-carotene in the LB film orient perpendicular to the gold substrate.
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.39.3557