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 |
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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 |
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Организации |
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Информация о финансировании (2)
1 | Российский научный фонд | 14-13-00834 |
2 | Swiss National Science Foundation | 144534 |
Реферат:
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.
Библиографическая ссылка:
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
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
Файлы:
Полный текст от издателя
Даты:
Поступила в редакцию: | 18 июн. 2015 г. |
Опубликована online: | 30 июл. 2015 г. |
Опубликована в печати: | 13 авг. 2015 г. |
Идентификаторы БД:
Web of science | WOS:000359683800066 |
Scopus | 2-s2.0-84939194884 |
РИНЦ | 24007824 |
Chemical Abstracts | 2015:1188878 |
Chemical Abstracts (print) | 163:250488 |
OpenAlex | W2514088098 |