4.8 Article

Competitive self-assembly driven as a route to control the morphology of poly(tannic acid) assemblies

Journal

NANOSCALE
Volume 11, Issue 11, Pages 4751-4758

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nr07236a

Keywords

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Funding

  1. National Natural Science Foundation of China [U1703351, 51663021]
  2. Bingtuan excellent Young Scholars [CZ027205]
  3. Bingtuan Innovation Team in Key Areas [2015BD003]
  4. Yangtze River scholar research project of Shihezi University [CJXZ201401]

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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 pi-pi 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.

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