In this work, we studied a Belousov Zhabotinsky (BZ) reaction, carried out in the anisotropic environment of the 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC)/water binary system, that presents layered aqueous domains separated by lipid bilayers. When the system reached 25% w/w of lipid content, inwardly rotating spirals and spiral-like structures coexisted with striped standing waves. We demonstrated that peculiar patterns, first discovered in AOT microemulsions were also formed in layered water domains. Thus, we showed that these structures are not exclusive of spherical droplets. In our case, the coupling mechanism between different aqueous compartments, which provide the observation of patterns at a macroscopic scale length, that is, centimeters, is likely due to membrane defects and permeability of some intermediates. The system we investigated has some unique features, being the first one that really represents the model for a biological structure.
Chemical waves and pattern formation in the 1,2-dipalmitoyl-sn-glycero-3-phosphocholine/water lamellar system / Magnani, A; Marchettini, N; Ristori, S; Rossi, C; Rossi, F; Rustici, Mauro; Spalla, O; Tiezzi, E.. - In: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY. - ISSN 0002-7863. - 126:(2004), pp. 11406-11407. [10.1021/ja047030c]
Chemical waves and pattern formation in the 1,2-dipalmitoyl-sn-glycero-3-phosphocholine/water lamellar system
RUSTICI, Mauro;
2004-01-01
Abstract
In this work, we studied a Belousov Zhabotinsky (BZ) reaction, carried out in the anisotropic environment of the 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC)/water binary system, that presents layered aqueous domains separated by lipid bilayers. When the system reached 25% w/w of lipid content, inwardly rotating spirals and spiral-like structures coexisted with striped standing waves. We demonstrated that peculiar patterns, first discovered in AOT microemulsions were also formed in layered water domains. Thus, we showed that these structures are not exclusive of spherical droplets. In our case, the coupling mechanism between different aqueous compartments, which provide the observation of patterns at a macroscopic scale length, that is, centimeters, is likely due to membrane defects and permeability of some intermediates. The system we investigated has some unique features, being the first one that really represents the model for a biological structure.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
