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Pressure-Induced Self-Assembly in 3-Phenylpropanal: Distinct Clustering via π-Stacking and Distorted Hydrogen Bonds
Anjana Krishna Sudhakaran Nair Valsala Kumari1, Barbara Hachuła2, Patryk Włodarczyk3
1A. Chełkowski Institute of Physics, Faculty of Science and Technology, University of Silesia in Katowice, 75 Pułku Piechoty 1, 41-500 Chorzów, Poland.
High pressure induces unique clustering in 3-phenylpropanal (3P1 Pal) via π-stacking and hydrogen bonds. This compression significantly alters molecular dynamics and self-assembly in viscous liquids.
Area of Science:
- Physical Chemistry
- Materials Science
Background:
- Understanding molecular interactions is crucial for designing new materials.
- High pressure is a powerful tool for tuning material properties.
Purpose of the Study:
- Investigate the impact of high pressure on 3-phenylpropanal (3P1 Pal) dynamics and self-assembly.
- Elucidate the intermolecular forces driving aggregation under compression.
Main Methods:
- Dielectric spectroscopy to study molecular dynamics.
- Fourier Transform Infrared and Raman spectroscopy for structural analysis.
- Molecular dynamics simulations to model aggregation.
Main Results:
- Observed unusual Debye process behavior under high pressure, indicating distinct clustering.
- Identified π-stacking and distorted hydrogen bonds as dominant interactions.
- Found larger, more compact aggregates formed at high pressure compared to low temperatures.
Conclusions:
- High compression effectively tunes dynamics and association patterns in 3P1 Pal.
- Revealed key aspects of self-assembly in viscous molecular liquids under pressure.
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