什么时候水不是水? 使用高电荷无机分子探测器,探索大反向微粒中封闭的水
Bharat Baruah1, Jennifer M Roden, Myles Sedgwick
1Department of Chemistry, Colorado State University, Fort Collins, CO 80523-1872, USA.
Journal of the American Chemical Society
|September 28, 2006
概括
大型气溶OT (AOT) 反向微粒接近散装水的特性. 然而,decavanadate (V(10)) 寡合体显示出质子梯度,具有酸性接口和中性内部,挑战了对大型细胞内部的期望.
科学领域:
- 物理化学 物理化学
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
背景情况:
- 气溶OT (AOT) 逆是油中的水微乳液.
- 封闭在反向微粒中的水的特性不同于散装水.
- 微粒大小影响了从散装水的行为偏离的程度.
研究的目的:
- 为了研究大型AOT反向菌体内的微环境.
- 在水池中探测质子度和溶解物行为.
- 了解在封闭系统中从散水特性中偏离的偏差.
主要方法:
- 使用 (51) V核磁共振 (NMR) 光谱学.
- 采用一种高电荷的甲 (V(10)) 寡合物作为探针.
- 分析化学转移以确定溶液的物种化和质子化状态.
主要成果:
- 德卡瓦纳酸 (V(10)) 寡合体在AOT反向小粒体内经历脱质.
- 这种去质子化表明,与原始溶液相比,内池水池中的质子度较低.
- (51) V NMR 化学转移揭示了溶液环境的明显变化.
结论:
- 在AOT反向微粒中存在显著的质子梯度.
- 微粒的界面区域是酸性的,而内部水池几乎是中性的.
- 即使在大型微粒中,受限水的特性也可能会偏离散装水,受到溶解物-水相互作用的影响.
相关概念视频
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