Unique fluorescence spectra of a disubstituted pyrene surfactant in Langmuir-Blodgett films

• Sakomura, Masaru

• Nakashima, T

• Ueda, K.

• Fujihira, M.

Abstract

type:postprint

We first observed a unique pyrene (Py) emission from 10-(1-(6-hexyl)pyrenyl)decanoic acid (1,6-HPDA) Langmuir-Blodgett (LB) films. In the fluorescence spectra of the 1,6-HPDA LB films, the normal bands of monomer and excimer emission of Py were absent but the new structured emission band with peaks at 422, 448, and 473 nm was observed. Besides the intensity, the shape of the characteristic structured emission band at shorter wavelengths than normal excimers did not changed essentially on lowering the Py concentration in the LB monolayer from 100 to 1 mol%. The spectroscopic studies on HPDA LB films of a variety of Py concentrations suggested that a novel excimer responsible for the structured new emission would be efficiently formed by photo-excitation of a Py-Py pre-associated dimer in different manners than those of normal excimer formations. (c) 2005 Elsevier B.V. All fights reserved.

Journal

• Colloids and Surfaces A: Physicochemical and Engineering Aspects

  Colloids and Surfaces A: Physicochemical and Engineering Aspects 284 528-531, 2006-08-15

  Elsevier Science B.V.

Keywords

• disubstituted pyrene
• pre-associate dimer
• static excimer
• Langmuir-Blodgett film

Details

• CRID: 1050282812714955520
• NII Article ID: 120000920815
• NII Book ID: AA10892561
• ISSN: 09277757
• Web Site: http://hdl.handle.net/10131/808
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles
  • KAKEN