Shining Light on Growth-Dependent Surface Chemistry of Organic Crystals: A Polarized Raman Spectroscopic and Computational Study of Aspirin
| Autor: | Andrea Erxleben, Patrick McArdle, Jonathan M. Skelton, Anuradha R. Pallipurath |
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| Rok vydání: | 2019 |
| Předmět: |
Surface (mathematics)
Microscope 010405 organic chemistry Chemistry Organic crystal Crystal growth General Chemistry 010402 general chemistry Condensed Matter Physics 01 natural sciences 0104 chemical sciences law.invention Characterization (materials science) Crystal symbols.namesake law Chemical physics symbols General Materials Science Raman spectroscopy Material properties |
| Zdroj: | Crystal Growth & Design. 19:1288-1298 |
| ISSN: | 1528-7505 1528-7483 |
| Popis: | Understanding and controlling crystal surfaces is a critical problem in contemporary materials science. Organic crystal surfaces present the additional complexity of multiple terminations with different functional groups. These alternate terminations influence the surface chemistry and exert control over many material properties. While established tools for surface characterization exist, few provide the chemical information required to unambiguously identify functional groups. Polarized Raman spectroscopy is a versatile tool that can provide detailed chemical information on molecular materials, and, when used in a microscope configuration, can be used to map substrates on a micron scale. In this work, we demonstrate the use of polarized Raman to study the surface chemistry of aspirin. By analyzing crystals grown under a variety of conditions, we relate the growth solvent to the surface termination and reconcile the conflicting results in the literature on the nature of the surface. Our results are ... |
| Databáze: | OpenAIRE |
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