School of Chemistry and Chemical Engineering/Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, Key Laboratory of Materials-Oriented Chemical Engineering of Xinjiang Uygur Autonomous Region, Engineering Research Center of Materials-Oriented Chemical Engineering of Xinjiang Bintuan, Shihezi University, Shihezi 832003, P. R. China.
Nanoscale. 2019 Mar 14;11(11):4751-4758. doi: 10.1039/c8nr07236a.
With an attempt to develop some supermolecular assemblies of a particular structure through a controllable method, the present study developed two distinct assembly patterns for Poly(Tannic Acid) (PTA) by means of adjusting the components and composition of a binary solvent system. The assembly mechanism was explored through the comparison of theoretical calculations and experimental results with respect to how solvent sets affect the nature of intermolecular interactions among oligomers. The results indicate that the morphology of the aggregates of PTA is determined from the nature of the intermolecular interactions among oligomers. While a cuboid shaped aggregate is likely the result of π-π stacking self-assembly, a sphere shaped morphology is formed through intermolecular hydrogen bonding among the oligomers. The results of the present work provide valuable resources to tune the aggregation morphology by quantitatively adjusting the physical properties of the binary solvent.
为了通过可控的方法开发出具有特定结构的超分子组装体，本研究通过调节二元溶剂系统的组成和成分，开发了两种不同的聚单宁酸（PTA）组装模式。通过比较理论计算和实验结果，探讨了组装机制，以了解溶剂集如何影响低聚物之间的分子间相互作用的性质。结果表明，PTA 聚集体的形态取决于低聚物之间分子间相互作用的性质。虽然长方体形状的聚集体可能是π-π堆积自组装的结果，但通过低聚物之间的分子间氢键形成球形形态。本工作的结果为通过定量调节二元溶剂的物理性质来调节聚集形态提供了有价值的资源。
