%0 Journal Article %1 WOS:000319012800004 %A Sousa, G P De %A Freire, P T C %A Filho, J Mendes %A Melo, F E A %A Lima, C L %C 233 SPRING ST, NEW YORK, NY 10013 USA %D 2013 %I SPRINGER %J BRAZILIAN JOURNAL OF PHYSICS %K Low Phase acid; temperature} transition; {Amino %N 3 %P 137-144 %R 10.1007/s13538-013-0132-3 %T Low-Temperature Raman Spectra of L-Histidine Crystals %V 43 %X We present a Raman spectroscopy investigation of the vibrational properties of l-histidine crystals at low temperatures. The temperature dependence of the spectra show discontinuities at 165 K, which we identify with modifications in the bonds associated to both the NH3 (+) and CO2 (-) motifs indicative of a conformational phase transition that changes the intermolecular bonds. Additional evidence of such a phase transition is provided by differential scanning calorimetry measurements, which identified an enthalpic anomaly at similar to 165 K.

@article{WOS:000319012800004, abstract = {We present a Raman spectroscopy investigation of the vibrational properties of l-histidine crystals at low temperatures. The temperature dependence of the spectra show discontinuities at 165 K, which we identify with modifications in the bonds associated to both the NH3 (+) and CO2 (-) motifs indicative of a conformational phase transition that changes the intermolecular bonds. Additional evidence of such a phase transition is provided by differential scanning calorimetry measurements, which identified an enthalpic anomaly at similar to 165 K.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {233 SPRING ST, NEW YORK, NY 10013 USA}, author = {Sousa, G P De and Freire, P T C and Filho, J Mendes and Melo, F E A and Lima, C L}, biburl = {https://www.bibsonomy.org/bibtex/225940adbc2766734489f7ed77c13bc32/ppgfis_ufc_br}, doi = {10.1007/s13538-013-0132-3}, interhash = {146ce85374ef91de5b34e84fe1f188ec}, intrahash = {25940adbc2766734489f7ed77c13bc32}, issn = {0103-9733}, journal = {BRAZILIAN JOURNAL OF PHYSICS}, keywords = {Low Phase acid; temperature} transition; {Amino}, number = 3, pages = {137-144}, publisher = {SPRINGER}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Low-Temperature Raman Spectra of L-Histidine Crystals}, tppubtype = {article}, volume = 43, year = 2013 }