Aggregation phenomena in langmuir-blodgett films of polar stilbene amphiphiles

I. Furman, H. C. Geiger, D. G. Whitten, T. L. Penner, Abraham Ulman

Research output: Contribution to journalArticle

Abstract

The effect of incorporating polar-substituted stilbene groups into two-dimensional molecular assemblies was studied. A homologous series of stilbene-containing hexadecanoic acids was found to exhibit H-aggregation in supported Langmuir-Blodgett (LB) monolayers. The spectral properties of these aggregates are insensitive to the particular homologue used, either alone or in 1:1 mixtures. This result, particularly when considered in the context of its extreme similarity to that obtained from the LB films formed by alkyl-substituted stilbene fatty acids, suggests that H-aggregation is a minimum free energy packing assembly for stilbene units in LB films. β-Stilbene methylation prevents the molecules from tight packing and produces a pronounced perturbation on the H-aggregate absorbance spectrum.

Original languageEnglish (US)
Pages (from-to)837-843
Number of pages7
JournalLangmuir
Volume10
Issue number3
StatePublished - Mar 1994

Fingerprint

Stilbenes
Amphiphiles
stilbene
Langmuir Blodgett films
Langmuir-Blodgett films
Agglomeration
Methylation
Fatty acids
Free energy
Monolayers
Molecules
Acids
methylation
Palmitic Acid
fatty acids
assemblies
Fatty Acids
assembly
free energy
perturbation

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Furman, I., Geiger, H. C., Whitten, D. G., Penner, T. L., & Ulman, A. (1994). Aggregation phenomena in langmuir-blodgett films of polar stilbene amphiphiles. Langmuir, 10(3), 837-843.

Aggregation phenomena in langmuir-blodgett films of polar stilbene amphiphiles. / Furman, I.; Geiger, H. C.; Whitten, D. G.; Penner, T. L.; Ulman, Abraham.

In: Langmuir, Vol. 10, No. 3, 03.1994, p. 837-843.

Research output: Contribution to journalArticle

Furman, I, Geiger, HC, Whitten, DG, Penner, TL & Ulman, A 1994, 'Aggregation phenomena in langmuir-blodgett films of polar stilbene amphiphiles', Langmuir, vol. 10, no. 3, pp. 837-843.
Furman I, Geiger HC, Whitten DG, Penner TL, Ulman A. Aggregation phenomena in langmuir-blodgett films of polar stilbene amphiphiles. Langmuir. 1994 Mar;10(3):837-843.
Furman, I. ; Geiger, H. C. ; Whitten, D. G. ; Penner, T. L. ; Ulman, Abraham. / Aggregation phenomena in langmuir-blodgett films of polar stilbene amphiphiles. In: Langmuir. 1994 ; Vol. 10, No. 3. pp. 837-843.
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