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Toward Understanding Whether Interactive Surface Area Could Direct Ordered Macroscopic Supramolecular Self-Assembly.

Raheel Akram1, Mengjiao Cheng1, Fengli Guo1

  • 1State Key Laboratory of Chemical Resource Engineering & Key Laboratory of Carbon Fiber and Functional Polymer, Ministry of Education, Beijing University of Chemical Technology , 100029 Beijing, China.

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This summary is machine-generated.

Maximizing interactive surface area in macroscopic supramolecular assembly improves structural ordering. However, mismatching phenomena persist due to kinetic and thermodynamic factors, even with optimized designs.

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Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Self-Assembly

Background:

  • Mismatching phenomena are common in complex self-assembly processes.
  • Maximizing interactive surface area is a proposed strategy for macroscopic supramolecular assembly.
  • Understanding the dominant factors guiding assembly patterns remains limited.

Purpose of the Study:

  • To investigate the influence of interactive surface area on assembly behaviors in macroscopic supramolecular assembly.
  • To determine if interactive surface area is the primary driver of assembly patterns.
  • To explore the relationship between cylinder aspect ratio and assembly outcomes.

Main Methods:

  • Utilized millimeter cylinder building blocks with varying diameter/height (d/h) ratios as model systems.
  • Investigated interactive-surface-area-dependent assembling behaviors.
  • Performed in situ measurements of interactive forces for different assembled patterns.

Main Results:

  • Increasing the d/h ratio of cylinders enhanced the selectivity of face-to-face assembly over other geometries.
  • Improved ordering degree of assembled structures was observed with higher d/h ratios.
  • Mismatching phenomena were not entirely eliminated due to kinetic collisions and thermodynamic stability.

Conclusions:

  • Interactive surface area influences the ordering degree in macroscopic supramolecular assembly.
  • Kinetic and thermodynamic factors contribute to residual mismatching phenomena.
  • The study provides an in situ visible platform for understanding surface area effects in assembly.