Ground‐ and Excited‐state Proton Transfer Reaction of 3‐Hydroxyflavone in Dimyristoylphosphatidylcholine Liposome Membrane¶
Authors:
- 1 September 2004
- journal article
- Published by Wiley in Photochemistry and Photobiology
- Vol. 80 (2) , 309-315
Abstract
3‐Hydroxyflavone (3HF), a molecule that exhibits excited‐state intramolecular proton transfer, has been studied for its fluorescence characteristics in dimyristoylphosphatidylcholine (DMPC) liposome membrane. 3HF partitions to the lipid bilayer membrane with a reasonably large partition coefficient. On excitation at 417 nm, a weak emission from the ground‐state anion species was observed at 483 nm, whereas excitation at absorption maxima (345 nm) gives the usual intense fluorescence of the phototautomeric emission at 530 nm. In this article, we report the observation of a ground‐state proton transfer reaction of 3HF in DMPC liposome membrane.Keywords
This publication has 29 references indexed in Scilit:
- Evidence of Ground-State Proton-Transfer Reaction of 3-Hydroxyflavone in Neutral Alcoholic SolventsThe Journal of Physical Chemistry A, 2003
- Effect of ionic and neutral surfactants on the properties of phospholipid vesicles: investigation using fluorescent probesJournal of Photochemistry and Photobiology A: Chemistry, 1997
- Determination of the partition coefficient of 1-naphthol, an excited state acid, in DMPC membraneJournal of Photochemistry and Photobiology A: Chemistry, 1996
- Simulation of water transport through a lipid membraneThe Journal of Physical Chemistry, 1994
- Intra- and intermolecular proton transfer in 3-hydroxyflavone/ammonia complexesThe Journal of Physical Chemistry, 1989
- Dynamics of proton diffusion within the hydration layer of phospholipid membraneBiochemistry, 1989
- Time-resolved proton-phospholipid interaction. Methodology and kinetic analysisJournal of the American Chemical Society, 1988
- Intramolecular excited-state proton transfer in 3-hydroxyflavone. Hydrogen-bonding solvent perturbationsThe Journal of Physical Chemistry, 1984
- Biphasic structure model for reversed micelles. Depressed acid dissociation of excited-state pyranine in the restricted reaction fieldThe Journal of Physical Chemistry, 1982
- Pyranine as a sensitive pH probe for liposome interiors and surfaces. pH gradients across phospholipid vesiclesBiochimica et Biophysica Acta (BBA) - Biomembranes, 1978