Ultrasonic absorption by liposomes near the phase transition as a function of diameter
Ultrasonic absorption by liposomes near the phase transition as a function of diameter
复制标题
相变附近脂质体的超声波吸收与直径的函数关系
DOI：
10.1121/1.391383
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发表时间：
1984
影响因子：
2.4
通讯作者：
V. M. Maynard
中科院分区：
文献类型：
--
作者：
V. M. Maynard
使用声干涉仪测定由不同尺寸的 DPPC 和 DPPG 的 4:1 混合物组成的脂质体相变附近的每波长特定超声吸收系数与温度的函数关系。小单层囊泡 SUV（平均直径 20 nm）和大多层囊泡 MLV（平均直径 500 nm）产生与文献中类似的结果，即具有以下特性的峰：对于 SUV，在 39（度）℃ 时出现 0.32 ml/g 的振幅，宽度为 8（度）℃ 振幅的一半，对于 MLV， 0.60 ml/g 的振幅发生在 42.5（度）C，振幅一半的宽度为 1.3（度）C。
The specific ultrasonic absorption coefficient per wavelength as a function of temperature in the vicinity of the phase transition of liposomes, composed of a 4: 1 mixture of DPPC and DPPG, of different sizes was determined using an acoustic interferometer. Small unilamellar vesicles, SUV (average diameter 20 nm) and large multilamellar vesicles, MLV,(average diameter 500 nm) yielded results similar to those in the literature, viz., a peak with the following properties: for the SUV, an amplitude of 0.32 ml/g occurring at 39 (DEGREES) C and a width at half the amplitude of 8 (DEGREES) C, and for the MLV, an amplitude of 0.60 ml/g occurring at 42.5 (DEGREES) C, and a width at half the amplitude of 1.3 (DEGREES) C.