Non-Hydrostatic Pressure-Induced Phase Transitions in Self-Assembled Diphenylalanine Microtubes

authors	Krylov, A; Krylova, S; Kopyl, S; Kholkin, A
nationality	International
journal	TECHNICAL PHYSICS
keywords	PEPTIDE NANOTUBES; CRYSTAL
abstract	The structural phase transitions in diphenylalanine microtubes caused by an increase in the non-hydrostatic pressure have been examined. Raman scattering investigations have been carried out and the results obtained have been interpreted and analyzed. Spectral variations in the ranges of phenyl ring vibrations and high-frequency oscillations of NH and CH groups have been analyzed. Under pressures of up to 9.8 GPa, four spectral anomalies indicative of the occurrence of phase transitions have been observed. The transitions under pressures of 1.7 and 4 GPa are shown to be reversible. The transition at 5.7 GPa is accompanied by partial sample amorphization.
publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
issn	1063-7842
year published	2018
volume	63
issue	9
beginning page	1311
ending page	1315
digital object identifier (doi)	10.1134/S1063784218090098
web of science category	Physics, Applied
subject category	Physics
unique article identifier	WOS:000445659000011