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Effects of high pressure on molecules
1Geophysical Laboratory and Center for High Pressure Research, Carnegie Institution of Washington, Washington, DC 20015, USA. hemley@gl.ciw.edu
Annual Review of Physical Chemistry
|October 14, 2000
Summary
High pressure transforms molecular materials, altering bonding and creating novel substances. These studies reveal pressure-induced changes in structure, properties, and electronic states across diverse molecular systems.
Area of Science:
- Materials Science
- High-Pressure Physics
- Quantum Chemistry
Background:
- Molecular materials exhibit complex behavior under extreme conditions.
- Pressures in the multimegabar range significantly alter bonding and properties.
- Understanding these changes is crucial for discovering new materials.
Purpose of the Study:
- To explore the behavior of molecular materials under multimegabar pressures.
- To illustrate key phenomena like pressure-induced transitions and novel electronic states.
- To examine implications across various scientific disciplines.
Main Methods:
- High-pressure experimental studies.
- Analysis of structural and bonding evolution.
- Investigation of phase transitions and chemical reactions.
Main Results:
- Dramatic changes in bonding patterns and material properties observed.
- Pressure-induced phase transitions and chemical reactions identified.
- Novel electronic and magnetic ordering states discovered.
Conclusions:
- Extreme pressures fundamentally alter molecular material structures and properties.
- New classes of materials can be formed under multimegabar conditions.
- These findings have broad scientific implications.