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Updated: Jun 14, 2026

Fluid-cell Raman Spectroscopy for operando Studies of Reaction and Transport Phenomena during Silicate Glass Corrosion
Published on: May 9, 2025
Infrared spectroscopy study of structural changes in glass-forming salol
1Institute of Low Temperature and Structure Research, PAS, 50-950 Wroclaw, Poland.
Researchers studied glass-forming salol using FT-IR spectroscopy. Ordered clusters formed in supercooled liquid salol and became part of the glass structure, eventually crystallizing into a metastable monoclinic phase.
Area of Science:
- Physical Chemistry
- Materials Science
- Spectroscopy
Background:
- Salol is a well-known glass-forming material.
- Understanding the molecular arrangements in supercooled liquids and glasses is crucial for materials science.
- Phase transitions in glass-forming materials are complex and not fully understood.
Purpose of the Study:
- To investigate the structural evolution of glass-forming salol during temperature cycling.
- To identify the formation and behavior of ordered clusters in salol.
- To characterize the crystalline phase formed from these ordered clusters.
Main Methods:
- Fourier Transform Infrared (FT-IR) spectroscopy was employed.
- Measurements were conducted over a wide spectral and temperature range.
- Temperature changes included cooling from liquid to glass and heating back through the glass transition.
Main Results:
- Ordered clusters were observed in supercooled liquid salol at 250 K.
- These clusters integrated into the glass structure upon further cooling to 11 K.
- Heating to 270 K induced crystallization of these clusters into a monoclinic metastable phase, melting at 302 K.
Conclusions:
- The study reveals the dynamic behavior of ordered clusters in salol during phase transitions.
- The crystalline structure formed from these clusters is identified as monoclinic, corresponding to the metastable phase.
- FT-IR spectroscopy is effective in monitoring structural changes in glass-forming materials.
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