Hydrogen-Bond-Regulated Distinct Functional-Group Display at the Inner and Outer Wall of Vesicles
作者:Amrita Sikder、Anindita Das、Suhrit Ghosh
DOI:10.1002/anie.201500971
日期:2015.6.1
alignment and the formation of monolayer vesicles. The zeta potentials and cation‐assisted quantitative precipitation reveal negatively charged and nonionic outer surfaces for NDI‐1 and NDI‐2, respectively, indicating that hydrogen bonding also dictates the directionality of the monolayer curvature, ensuring that in both cases, the hydrazides remain at the inner wall to benefit from stronger hydrogen bonding
独特的超分子策略可以使两个瓶形不对称π两亲物NDI-1和NDI-2单向组装,其特征在于萘二酰亚胺发色团连接到相对臂上的非离子和阴离子头基上。两亲物仅在酰肼基团的位置不同,酰肼基团分别位于NDI-1和NDI-2的非离子或阴离子臂上。酰肼之间氢键的形成可补偿静电和空间因素,促进单向排列和单层囊泡的形成。ζ电位和阳离子辅助的定量沉淀分别揭示了NDI-1和NDI-2的带负电和非离子的外表面,这表明氢键也决定了单层曲率的方向性,确保在两种情况下,酰肼都保留在内壁上,以便在它们更接近的位置受益于更强的氢键作用。这反映在它们抑制α-胰凝乳蛋白酶的能力不同,α-胰凝乳蛋白酶具有带正电荷的表面:NDI-1诱导了80%的抑制,而NDI-2几乎没有观察到任何抑制。