Anomalous Raman peaks of intra-molecular hydrogen bond material 5-bromo-9-hydroxyphenalenone under various pressure and temperature conditions

Autor:	T. Shibata, Tomoyuki Mochida, Masamichi Kobayashi, Tadashi Sugawara, Y. Mita
Rok vydání:	2017
Předmět:	Materials science Hydrogen bond Hydrogen molecule Condensed Matter Physics Molecular physics Electronic Optical and Magnetic Materials Vibration symbols.namesake Nuclear magnetic resonance High pressure symbols Proton tunneling Raman spectroscopy Intensity (heat transfer) Raman scattering
Zdroj:	Ferroelectrics. 512:29-35
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150193.2017.1355150
Popis:	Studies on the Raman peaks appear at 593, 625, 651 and 1198 cm−1 in the intra-molecule hydrogen bond material 5-bromo-9-hydroxyphenalenone were performed under various pressure and temperature conditions. These peaks show two characteristic results: (1) in high pressure study, their pressure coefficients are approximately 4–6 times larger than those of other Raman peaks of this material, (2) in the latter experiment, they decrease in intensity with temperature and vanish around room temperature. These results support a model that these Raman peaks are generated by intra-molecule vibrations coupled with a proton tunneling motion.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::abc9c8591d811856536de5cba84cded3 https://doi.org/10.1080/00150193.2017.1355150 Zobrazit plný text záznamu