Department of Chemical Engineering and Materials Science, Graduate School of Engineering, University of Hyogo, 2167 Shosha, Himeji, Hyogo 671-2280, Japan.
Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan.
J Nanosci Nanotechnol. 2021 Dec 1;21(12):5993-5999. doi: 10.1166/jnn.2021.19501.
We evaluated the effect of dilution on both the size and packing density of aggregates prepared from a fatty acid (oleic acid, OA)/detergent (3-[(3-cholamidopropyl)dimethylammonio]-2-hydroxypropane sulfonate (CHAPSO)) bicelle as a parent for functional membrane materials. The sizes of the aggregates formed at different molar ratios, (= [OA]/([OA]+[CHAPSO])), of 0.3 and 0.7 and their parent bicelles were measured by dynamic light scattering and transmission electron microscopy; their packing density was evaluated by deconvolution of the fluorescence spectrum, where Laurdan molecules were used as a probe. The experimental results showed that the bicelles formed aggregates upon dilution because of the hydration of CHAPSO. The packing density of the nano-ordered aggregate formed at = 0.3 was much greater than that of the aggregate formed at = 0.7, implying the formation of an ordered aggregate under the condition of = 0.3.
我们评估了稀释对脂肪酸（油酸，OA）/去污剂（3-[(3-胆酰胺丙基)二甲氨基]-2-羟丙磺酸（CHAPSO））双胶束为母体的功能性膜材料的聚集物的大小和堆积密度的影响。通过动态光散射和透射电子显微镜测量了在不同摩尔比（= [OA]/([OA]+[CHAPSO]））为 0.3 和 0.7 时形成的聚集物的大小及其母体双胶束；通过 Laurdan 分子作为探针的荧光光谱解卷积评估了它们的堆积密度。实验结果表明，由于 CHAPSO 的水合作用，双胶束在稀释时形成了聚集物。在= 0.3 时形成的纳米有序聚集物的堆积密度远大于在= 0.7 时形成的聚集物的堆积密度，这意味着在= 0.3 的条件下形成了有序聚集物。
