Observation of Translational Diffusion in a Planer Supported Lipid Bilayer Membrane by Total Internal Reflection-Transient Grating Method
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- Masato Kondoh
- Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571 , Japan
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- Hidekazu Moritani
- Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571 , Japan
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- Taka-aki Ishibashi
- Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8571 , Japan
Description
<jats:title>Abstract</jats:title> <jats:p>Total internal reflection-transient grating (TIR-TG) method has been applied to diffusion coefficient measurements of trans-stilbene in a dimyristoylphosphatidylcholine (DMPC) lipid bilayer membrane at a silica/water interface. The observed TIR-TG signal consisted of four decay components. The rate constants of the third and fourth components quadratically depended on grating wavenumbers, which indicates that these components represent diffusion processes of trans-stilbene (diffusion signals). From the decay rate constants of the diffusion signals, two different diffusion coefficients, (5.7 ± 1.0) × 10−10 and (2.8 ± 0.5) × 10−12 m2s−1 were obtained for trans-stilbene in the DMPC membrane. This result indicates that the DMPC membrane is an inhomogeneous environment that can be described with two different effective viscosities.</jats:p>
Journal
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- Bulletin of the Chemical Society of Japan
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Bulletin of the Chemical Society of Japan 93 (5), 671-675, 2020-05
Oxford University Press (OUP)
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Details 詳細情報について
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- CRID
- 1360004236988307968
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- NII Article ID
- 130007842950
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- ISSN
- 13480634
- 00092673
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- Data Source
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- Crossref
- CiNii Articles
- KAKEN
- OpenAIRE