Niu Zheng, Wang Lei, Fang Sheng, Lan Pui Ching, Aguila Briana, Perman Jason, Ma Jian-Gong, Cheng Peng, Li Xiaopeng, Ma Shengqian
Department of Chemistry , University of South Florida , 4202 E. Fowler Avenue , Tampa , Florida 33620 , USA . Email:
Department of Chemistry , Institution Key Laboratory of Advanced Energy Materials Chemistry (MOE) , Collaborative Innovation Center of Chemical Science and Engineering , Nankai University , Tianjin 300071 , P. R. China.
Chem Sci. 2019 May 28;10(27):6661-6665. doi: 10.1039/c9sc01892a. eCollection 2019 Jul 21.
The rapid development of supramolecular chemistry provides a powerful bottom-up approach to construct various well-defined nano-architectures with increasing complexity and functionality. Compared to that of small and simple nanometric objects, the self-assembly of larger and more complex nanometric objects, such as nanocages, remains a significant challenge. Herein, we used a discrete nanocage as the monomer to successfully construct a novel three-dimensional (3D) supramolecular architecture, which comprises two types of nanocage building units with different connectivity, using the solvent-assisted coordination-driven assembly approach. The mechanism of this supramolecular assembly process was investigated by electrospray ionization mass spectrometry (ESI-MS) studies, which identified for the first time the formation of a nanocage dimer intermediate during the assembly process. The assembly of discrete nanocages into a 3D supramolecular architecture led to remarkable enhancement of stability and gas adsorption properties.
超分子化学的迅速发展提供了一种强大的自下而上的方法，用以构建各种具有日益增加的复杂性和功能性的、定义明确的纳米结构。与小而简单的纳米物体相比，更大、更复杂的纳米物体（如纳米笼）的自组装仍然是一项重大挑战。在此，我们使用离散的纳米笼作为单体，采用溶剂辅助配位驱动组装方法，成功构建了一种新型三维（3D）超分子结构，该结构由两种具有不同连接性的纳米笼构建单元组成。通过电喷雾电离质谱（ESI-MS）研究对这种超分子组装过程的机制进行了研究，该研究首次确定了组装过程中纳米笼二聚体中间体的形成。离散纳米笼组装成3D超分子结构导致稳定性和气体吸附性能显著增强。
