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June 21, 2026Langmuir

Kinetic vs Thermodynamic Processes in the Two-Dimensional Crystallization of a Hydrogen-Bonding Building Block

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Authors

BTBrody TallonEHEbaa HusinBGBrittany Gorry

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Overview

Scanning tunneling microscopy reveals how temperature impacts molecular arrangement in BPTCA structures.

Key Points

  • This research aims to understand how temperature and growth conditions affect the self-assembly of BPTCA patterns.
  • Conducted scanning tunneling microscopy (STM) analysis in ultrahigh vacuum (UHV)
  • Investigated molecular arrangements at different temperatures (room temperature and above 423 K)
  • Examined the formation of ordered structures and newly identified polymorphs
  • At room temperature, BPTCA forms ordered kagome and brick wall structures.
  • Above 423 K, new polymorphs emerge with densely packed tilted molecules.
  • Higher temperature surface preparation significantly reduces disordered structures and increases large kagome domains.

Cite This Study

Tallon et al. (2026) studied this question.

synapsesocial.com/papers/6a377fb224f042ddf4c59f37https://doi.org/10.1021/acs.langmuir.6c00171
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