Reversible association of porphyrin derivative incorporated into hydrophobic region of phospholipid bilayer

ABSTRACT 3,8,13,17-Tetramethyl-7,12-divinyl-2,18-bis-(18-hydroxyoctadecyloxycarbonyl-ethyl)porphinato zinc (BHPZn) was incorporated into the hydrophobic bilayer membrane region of liposome

of dipalmitoyl phosphatidylcholine (DPPC). Thionine was added to the outer aqueous phase of the liposome suspension. Fluorescence spectra were measured to check the influence of phase of

lipid bilayer on the energy transfer from BHPZn to thionine. At temperatures below the phase transition temperature (_T_c) of DPPC liposome, BHPZn was assembled in the bilayer membrane and

the excitation energy of BHPZn was dissipated by the static self-concentration quenching. The energy transfer efficiency to thionine was considerably low. Against this, at temperatures above

the _T_c, concentrated BHPZn was dispersed uniformly and reduced the self-quenching of BHPZn in the excited state. The energy transfer efficiency from porphyrin to thionine increased with

heating depending on the fluidity of the lipid bilayer. The fluorescence characteristics of BHPZn reflected the phase behavior of the lipid bilayer, and was simply controlled by changing the

physicochemical feature of lipids such as fluidity. SIMILAR CONTENT BEING VIEWED BY OTHERS STABILIZATION OF SUPRAMOLECULAR MEMBRANE PROTEIN–LIPID BILAYER ASSEMBLIES THROUGH IMMOBILIZATION

IN A CRYSTALLINE EXOSKELETON Article Open access 13 April 2021 SPECIFIC AND NONDISRUPTIVE INTERACTION OF GUANIDIUM-FUNCTIONALIZED GOLD NANOPARTICLES WITH NEUTRAL PHOSPHOLIPID BILAYERS

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University, Lin Wang, Hiroyuki Ohno & Eishun Tsuchida Authors * Lin Wang View author publications You can also search for this author inPubMed Google Scholar * Hiroyuki Ohno View author

publications You can also search for this author inPubMed Google Scholar * Eishun Tsuchida View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND

PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE Wang, L., Ohno, H. & Tsuchida, E. Reversible Association of Porphyrin Derivative Incorporated into Hydrophobic

Region of Phospholipid Bilayer. _Polym J_ 21, 505–510 (1989). https://doi.org/10.1295/polymj.21.505 Download citation * Issue Date: 01 June 1989 * DOI: https://doi.org/10.1295/polymj.21.505

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clipboard Provided by the Springer Nature SharedIt content-sharing initiative KEYWORDS * Porphyrin * Lipid Bilayer * Energy Transfer * Thionine * Phase Behavior