Fluorescence anisotropy of dyes included in crosslinked polystyrene

Marcia Levitus, José Luis Bourdelande, Gerard Marqués, Pedro F. Aramendía

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this work we investigate on the local free volume of a crosslinked polystyrene by studying the steady-state fluorescence anisotropy of three probes with different sizes and shape, embedded in the polymer matrix. The very low values measured for the steady-state fluorescence anisotropy show that the molecules can perform ample movements during their excited-state lifetimes (typically few nanoseconds). Moreover, anisotropy values decrease with the size of the probe. Results were interpreted in terms of Saupe order parameters and the wobbling-in-cone model.

Original languageEnglish (US)
Pages (from-to)77-82
Number of pages6
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume126
Issue number1-3
StatePublished - Sep 1999
Externally publishedYes

Fingerprint

Polystyrenes
polystyrene
Anisotropy
Coloring Agents
Dyes
dyes
Fluorescence
fluorescence
anisotropy
probes
Free volume
Polymer matrix
Excited states
Cones
cones
life (durability)
Molecules
polymers
matrices
excitation

Keywords

  • Anisotropy
  • Fluorescence
  • Polystyrene

ASJC Scopus subject areas

  • Bioengineering
  • Physical and Theoretical Chemistry

Cite this

Fluorescence anisotropy of dyes included in crosslinked polystyrene. / Levitus, Marcia; Bourdelande, José Luis; Marqués, Gerard; Aramendía, Pedro F.

In: Journal of Photochemistry and Photobiology A: Chemistry, Vol. 126, No. 1-3, 09.1999, p. 77-82.

Research output: Contribution to journalArticle

Levitus, M, Bourdelande, JL, Marqués, G & Aramendía, PF 1999, 'Fluorescence anisotropy of dyes included in crosslinked polystyrene', Journal of Photochemistry and Photobiology A: Chemistry, vol. 126, no. 1-3, pp. 77-82.
Levitus, Marcia ; Bourdelande, José Luis ; Marqués, Gerard ; Aramendía, Pedro F. / Fluorescence anisotropy of dyes included in crosslinked polystyrene. In: Journal of Photochemistry and Photobiology A: Chemistry. 1999 ; Vol. 126, No. 1-3. pp. 77-82.
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