Second-harmonic probe of pressure-induced structure ordering within long-chain fluorescein monolayer at the air/water interface

Valeria Tsukanova, Akira Harata, Teiichiro Ogawa

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Pressure-induced structure ordering of long-chain Fluorescein O322 molecules within the monolayer at the air/water interface was studied by rotating a sample trough using the second-harmonic generation technique. Azimuthal angle dependences of the polarized second-harmonic intensity (Ipp, Ips, Iss, and Isp) were measured for different degrees of monolayer compression. Ipp and Iss showed a 2-fold pattern, whereas Ips and Isp showed a 4-fold pattern. A set of theoretical equations was derived to interpret the observed pattern. The observed patterns agreed with the equations based on C2v symmetry, and the monolayer showed a definite crystalline structure in the 0.21 nm2/molecule region. These results showed that the transition of an initially disordered and heterogeneous dye monolayer into a fairly regular crystalline-like structure was characterized by continuous changes in the structure ordering of constituent molecules maintaining C2v symmetry.

Original languageEnglish
Pages (from-to)7707-7712
Number of pages6
JournalJournal of Physical Chemistry B
Volume104
Issue number32
Publication statusPublished - Aug 17 2000
Externally publishedYes

Fingerprint

Fluorescein
Monolayers
harmonics
Water
probes
air
Air
water
Molecules
Crystalline materials
molecules
Crystal symmetry
symmetry
Harmonic generation
troughs
harmonic generations
Coloring Agents
Dyes
dyes

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Engineering(all)

Cite this

Second-harmonic probe of pressure-induced structure ordering within long-chain fluorescein monolayer at the air/water interface. / Tsukanova, Valeria; Harata, Akira; Ogawa, Teiichiro.

In: Journal of Physical Chemistry B, Vol. 104, No. 32, 17.08.2000, p. 7707-7712.

Research output: Contribution to journalArticle

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