Gas‐Constructed Vesicles with Gas‐Moldable Membrane Architectures

Abstract

Integrating gas as a main building block into nanomaterial construction is a challenging mission that remains elusive. Herein, we report a gas‐constructed vesicular system formed by CO2 gas and frustrated Lewis pairs (FLPs). Two molecular triads bearing three bulky borane and phosphine groups are designed as trivalent disc‐like FLP monomers. CO2, as a gas cross‐linker, can drive the two‐dimensional polymerization of these two FLP monomers, leading to the generation of planar FLP networks that further transform into a thermodynamically favored membranous vesicle structure. Gas‐guided vesicle formation is also applicable to other inert but FLP‐activatable gases. Different gas linkages can form vesicles with distinct architectures, sizes, and morphologies. We envisage that this study would suggest a new concept that exploits gases to fabricate tunable nanomaterials.

Light-driven self-assembly of spiropyran-functionalized covalent organic framework

“…5d, g, j ). A similar type of hollow vesicle morphology has already been observed for MOFs and other supramolecular polymers 99 – 102 . After an irradiation time of 24 h, further morphological changes were not observed (Supplementary Fig.…”

Gas-based dynamic chemistry and assembly

“…鉴于动态气桥的独特成键结构和动态化学特征, 进一步的期望是这种气桥的形成对广谱的气体分子都 有普遍的适用性, 这样可以解决面向不同气体需要设 计完全不同结构的弊端. 针对这一问题, Xu等 [42] 和 Zhu等 [43] 发现受阻路易斯酸碱对化合物对各种气体分 PISA) [44,45] 是近十年来发展起来的一种聚合物原位自 组装技术, 允许同步实现单体聚合反应及其产物自组 装过程, 很好地避免了传统方法必须在稀溶液中进行 溶液加工的冗繁步骤, 实现了在高浓度下量化制备的 潜力. 尽管具备多重优势, 该方法仍存在局限: 一方面 是PISA对纳米形貌遍历性的调节跨度较窄, 通常只涉 及球状胶束→蠕虫状胶束→囊泡体的相变过程 [46,47] ,…”

Supramolecular vesicle engineering by regulating the assembly of shape-persistent aromatic-hydrazone macrocycles

“…20 Therefore, manipulating vesicle size is essential for the application of vesicles, particularly in nanomedicine 21–23 and nanomaterials. 24 Currently, several approaches, including extrusion 25 and solvent displacement, 26 are explored to control the size of traditional vesicles, and for polymer vesicles, the size can be controlled by the hydrophobic/hydrophilic content or the chain length. 27,28 For supramolecular vesicles, their sizes and properties usually depend on the assembly of supramolecular building blocks.…”