Kinetic Control of High-Pressure Solid-State Phase Transitions: A Case Study on l-Serine | Sciact - CRIS-система Института катализа

Kinetic Control of High-Pressure Solid-State Phase Transitions: A Case Study on l-Serine Научная публикация

Журнал

The Journal of Physical Chemistry C
ISSN: 1932-7447 , E-ISSN: 1932-7455

Вых. Данные

Год: 2015, Том: 119, Номер: 32, Страницы: 18611-18617 Страниц : 7 DOI: 10.1021/acs.jpcc.5b05838

Ключевые слова

Amino acids, X ray diffraction, Compression rates, Critical pressures, High-pressure behavior, High-pressure solids, Interconversions, Pressure increase, Solid state transformations, Synchrotron powder X-ray diffractions

Авторы

Fisch M. ^1,2 , Lanza A. ^1,2 , Boldyreva E. ^3,4 , Macchi P. ¹ , Casati N. ²

Организации

1	Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, Bern, Switzerland
2	Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland
3	Institute of Solid State Chemistry and Mechanochemistry, Russian Academy of Sciences, Siberian Branch, Novosibirsk, Russian Federation
4	Novosibirsk State University, Novosibirsk, Russian Federation

Информация о финансировании (2)

1	Российский научный фонд	14-13-00834
2	Swiss National Science Foundation	144534

This study demonstrates that the compression rate adds a new perspective to phase diagrams of solids. A particular pressure increase rate may trigger unexpected solid-state transformations, producing otherwise inaccessible phases. Our test case is l-serine, characterized by a complex high-pressure behavior with three known polymorphs. However, the critical pressure of each transition, the ranges of coexistence of polymorphs, and the existence of an elusive fourth phase remained open questions, here analyzed and solved using synchrotron powder X-ray diffraction at high pressure, under controlled pressure increase rates. Two parallel paths exist, and the composition of the system depends on the pressure increase rate and the steps during the compression. A slow and continuous compression favors phase IV, whereas phase II can be observed only with a rapid and sharp compression. No direct interconversion occurs between these phases. Moreover, phase III originates only from phase II but never from phase IV. By controlling the strategy of pressure increase, we obtained a powder of phase IV that enabled solving its unknown structure, which resulted as a distorted superstructure of phase I with a tripled a-axis.

Fisch M. , Lanza A. , Boldyreva E. , Macchi P. , Casati N.
Kinetic Control of High-Pressure Solid-State Phase Transitions: A Case Study on l-Serine

The Journal of Physical Chemistry C. 2015. V.119. N32. P.18611-18617. DOI: 10.1021/acs.jpcc.5b05838 WOS Scopus РИНЦ CAPlusCA OpenAlex

Полный текст от издателя

Поступила в редакцию:	18 июн. 2015 г.
Опубликована online:	30 июл. 2015 г.
Опубликована в печати:	13 авг. 2015 г.

Web of science:	WOS:000359683800066
Scopus:	2-s2.0-84939194884
РИНЦ:	24007824
Chemical Abstracts:	2015:1188878
Chemical Abstracts (print):	163:250488
OpenAlex:	W2514088098

БД	Цитирований
Web of science	55
Scopus	56
OpenAlex	55