%0 Journal Article %1 WOS:000300600500023 %A Luz-Lima, C %A Sousa, G P De %A Jr., J A Lima %A Melo, F E A %A Filho, J Mendes %A Pollan, A %A Freire, P T C %C RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS %D 2012 %I ELSEVIER %J VIBRATIONAL SPECTROSCOPY %K Hydrostatic Phase acid crystal; pressure; transition} {Amino %P 181-187 %R 10.1016/j.vibspec.2011.12.005 %T High pressure Raman spectra of beta-form of L-glutamic acid %V 58 %X Raman spectroscopy was used to investigate the vibrational properties of L-glutamic acid in the beta-form in a diamond-anvil cell up to pressures of 21.5 GPa in the spectral region between 20 and 3270cm(-1). From the analysis of the results it was observed that the crystal undergoes an impressive series of phase transitions in this pressure range. The phase transitions are accompanied by modifications in a number of modes and discontinuities in the wavenumber versus pressure plots, as well as by modifications in the bands associated to both rocking and stretching modes of NH3+. Upon decompression to ambient pressure the original spectra were recovered indicating that the phase transitions are reversible. (C) 2011 Elsevier B.V. All rights reserved.

@article{WOS:000300600500023, abstract = {Raman spectroscopy was used to investigate the vibrational properties of L-glutamic acid in the beta-form in a diamond-anvil cell up to pressures of 21.5 GPa in the spectral region between 20 and 3270cm(-1). From the analysis of the results it was observed that the crystal undergoes an impressive series of phase transitions in this pressure range. The phase transitions are accompanied by modifications in a number of modes and discontinuities in the wavenumber versus pressure plots, as well as by modifications in the bands associated to both rocking and stretching modes of NH3+. Upon decompression to ambient pressure the original spectra were recovered indicating that the phase transitions are reversible. (C) 2011 Elsevier B.V. All rights reserved.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {RADARWEG 29, 1043 NX AMSTERDAM, NETHERLANDS}, author = {Luz-Lima, C and Sousa, G P De and Jr., J A Lima and Melo, F E A and Filho, J Mendes and Pollan, A and Freire, P T C}, biburl = {https://www.bibsonomy.org/bibtex/23225dc02b9b16db28e4dcf9fd7312bc4/ppgfis_ufc_br}, doi = {10.1016/j.vibspec.2011.12.005}, interhash = {185760e22a20ee890ca1200e4bfb083a}, intrahash = {3225dc02b9b16db28e4dcf9fd7312bc4}, issn = {0924-2031}, journal = {VIBRATIONAL SPECTROSCOPY}, keywords = {Hydrostatic Phase acid crystal; pressure; transition} {Amino}, pages = {181-187}, publisher = {ELSEVIER}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {High pressure Raman spectra of beta-form of L-glutamic acid}, tppubtype = {article}, volume = 58, year = 2012 }