DODAC IN BIDIMENSIONAL STATES - MONOLAYERS, LANGMUIR-BLODGETT-FILMS AND VESICLES
DODAC IN BIDIMENSIONAL STATES - MONOLAYERS, LANGMUIR-BLODGETT-FILMS AND VESICLES
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DOI：
10.1016/0166-6622(91)80021-f
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发表时间：
1991-01-30
期刊：
影响因子：
--
通讯作者：
GABRIELLI, G
中科院分区：
文献类型：
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作者：
BONOSI, F;GABRIELLI, G
确定了DODAC在水-气界面的扩散等温线为温度的函数。我们证实，对扩散膜的研究是更好地理解获得更复杂聚集体的最合适条件的起点，例如Langmuir-Blodgett(LB)膜或囊泡。当DODAC单分子膜处于液体凝聚相时，获得多层膜的条件最佳。相反，当单层处于液体膨胀相时，超声作用后得到多层和单层囊泡。当体系低于凝胶-液晶转变温度(T(C)=37℃)时，也可以得到囊泡，但浊度数据表明，形成了更大比例的多层囊泡。
The spreading isotherms of DODAC at the water-air interface were determined as a function of temperature. We verified that a study of the spreading film is the starting point for a better understanding of the most suitable conditions to obtain more complex aggregates, such as Langmuir-Blodgett (LB) films or vesicles. When the DODAC monolayer was in a liquid-condensed phase, this resulted in the optimum conditions for obtaining LB multilayers. In contrast, when the monolayer was in a liquid-expanded phase, multi- and unilamellar vesicles were obtained after sonication. Vesicles were also obtained when the system was below the gel-liquid crystal transition temperature (T(c) = 37-degrees-C), but a greater fraction of multilamellar vesicles were formed, as indicated by turbidimetric data.