Temperature-Induced Structural Phase Transitions in Self-Assembled Hydrogen Bonded Networks at the Liquid/Solid Interface

The effect of temperature on the transformations of hydrogen-bonded structures of trimesic acid (TMA) and p -terphenyl-3,5,3'',5''-tetracarboxylic acid (TPTC) has been investigated at the nonanoic acid/highly oriented pyrolytic graphite (HOPG) interface by scanning tunneling micr...

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Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2021-09, Vol.95 (9), p.1871-1876
Main Authors: Qiu, Shenyu, Li, Yudie, Xu, Shilin, Cai, Yuanqing, Zhang, Yuxin, Li, Wei
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Hydrogen bonding
Liquid-solid interfaces
Phase transitions
Physical Chemistry
Pyrolytic graphite
Scanning tunneling microscopy
Self-assembly
Structure of Matter and Quantum Chemistry
Temperature effects
Trimesic acid
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Summary:The effect of temperature on the transformations of hydrogen-bonded structures of trimesic acid (TMA) and p -terphenyl-3,5,3'',5''-tetracarboxylic acid (TPTC) has been investigated at the nonanoic acid/highly oriented pyrolytic graphite (HOPG) interface by scanning tunneling microscopy (STM). STM observations show that TMA assembly based on temperature modulations underwent phase transitions from a chicken-wire (25°C) to a flower (60°C) and further to a guest-host flower structure. Similarly, TPTC network with five kinds of pores underwent change of structural conformation after annealing to 85°C. This work provides a way toward controlled assembly directed by temperature and is beneficial for the understanding of both the assembling process and the underlying kinetics and thermodynamics for molecular nanostructures.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024421090247