Determination of the lateral diffusion coefficient of lecithin-water systems using fluorescence spectroscopy

Authors

Rhona Hectora B. Dulay ⋅ PH National Institute of Physics, University of the Philippines Diliman
Vallerie Ann A. Innis ⋅ PH National Institute of Physics, University of the Philippines Diliman
Zenaida B. Domingo ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

The lateral diffusion coefficients, D_diff, of phospholipid molecules in lecithin-water systems have been investigated. The method used for the quantitative determination is a spectroscopic technique. 1-pyrene dodecanoic acid was used as the spectroscopic probe. From the fluorescence spectra acquired, the monomer and excimer intensities were determined and were use to get D_diff. The computed D_diff are in the order of 10^-8 suggesting that the systems observed are in the liquid crystalline L_α phase.

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Issue

2002: Proceedings of the 20th Samahang Pisika ng Pilipinas Physics Congress

Article ID

SPP-2002-PP-35

Section

Instrumentation and Optics

Published

2002-10-23

How to Cite

[1]

RHB Dulay, VAA Innis, and ZB Domingo, Determination of the lateral diffusion coefficient of lecithin-water systems using fluorescence spectroscopy, Proceedings of the Samahang Pisika ng Pilipinas 20, SPP-2002-PP-35 (2002). URL: https://proceedings.spp-online.org/article/view/SPP-2002-PP-35.