L-a-dimyristoyl phosphatidic acid

Figure 8.6. Fluorescence micrographs of a monolayer of L-a-dimyristoyl phosphatidic acid containing 2.5 mM of an NBD dye on increasing the surface pressure from the point of inflection on the isotherm, a, to about half way along the two-phase region. These results were obtained at a temperature of 10.5°C at pH 11.3 over a subphase containing 1 mM NaOH, 10 pM Na2HP04, 100 mM NaCl, 2 pM CaCI2 and 1 pm EDTA. (Reproduced from Losche, M., Duwe, H.-P. and Mohwald, H. 1988 J. Colloid Interface Sci. 126 432-44 by kind permission of the publishers and authors.)...

Isotherms (interface pressure n [mN/m] area per molecule A [A ]) are usually measured by continuously compressing the film, which has been prepared on top of an electrolytic subphase. In this experiment, the interface pressure k A) = 7o - y A) [i.e. the difference of surface tensions without (y ) and with an interface film] is determined by monitoring the surface tension y A). For the phospholipid L-a-dimyristoyl phosphatidic acid (DMPA) a set of data at pH = 6 and various temperatures of the subphase was measured by Albrecht et al.9 and is reproduced in Fig.l. 

Figure 4 (a) Schematic for the preparation of nanotubes by using porous templates. SEWI micrographs of ordered and flexibie nanotubes obtained by LbL assembly of (b) PAH/PSS and (c) human serum albumin and L-a-dimyristoyl phosphatidic acid within the pores of the porous aiumina tempiate membrane. ... 

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