Pressure-Induced Crystallization and Phase Transformation of Para-xylene

Abstract Static pressure is an alternative method to chemical pressure for tuning the crystal structure, bonds, and physical properties of materials, and is a significant technique for the synthesis of novel materials and fundamental research. In this letter, we report the crystallization and phase...

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Autores principales:	Yanzhi Bai, Zhenhai Yu, Ran Liu, Nana Li, Shuai Yan, Ke Yang, Bingbing Liu, Dongqing Wei, Lin Wang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b77b9db749d8448884da8789ec066ffc
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spelling	oai:doaj.org-article:b77b9db749d8448884da8789ec066ffc2021-12-02T11:41:09ZPressure-Induced Crystallization and Phase Transformation of Para-xylene10.1038/s41598-017-05639-92045-2322https://doaj.org/article/b77b9db749d8448884da8789ec066ffc2017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-05639-9https://doaj.org/toc/2045-2322Abstract Static pressure is an alternative method to chemical pressure for tuning the crystal structure, bonds, and physical properties of materials, and is a significant technique for the synthesis of novel materials and fundamental research. In this letter, we report the crystallization and phase transformation of p-xylene under high pressure. Our optical micrographic observations and the appearance of lattice modes in the Raman and infrared (IR) spectra indicated that p-xylene crystallizes at ∼0.1 GPa. The X-ray diffraction (XRD) pattern at 0.84 GPa suggests that the crystallized p-xylene had a monoclinic phase with the Cc(9) space group. The sharp shrinkage of the lattice at ~13 GPa and the solid state of the decompressed sample we observed suggests a new crystalline phase of p-xylene. The in situ XRD showed that the new crystalline phase was still a monoclinic structure but with a different space group of C2(5), indicating that a phase transition occurred during further compression. The mass spectrometry experiment confirmed phase transition polymerization, with mainly trimer and tetramer polymers. Our findings suggest an easy and efficient method for crystallizing and polymerizing p-xylene under high pressure.Yanzhi BaiZhenhai YuRan LiuNana LiShuai YanKe YangBingbing LiuDongqing WeiLin WangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yanzhi Bai Zhenhai Yu Ran Liu Nana Li Shuai Yan Ke Yang Bingbing Liu Dongqing Wei Lin Wang Pressure-Induced Crystallization and Phase Transformation of Para-xylene
description	Abstract Static pressure is an alternative method to chemical pressure for tuning the crystal structure, bonds, and physical properties of materials, and is a significant technique for the synthesis of novel materials and fundamental research. In this letter, we report the crystallization and phase transformation of p-xylene under high pressure. Our optical micrographic observations and the appearance of lattice modes in the Raman and infrared (IR) spectra indicated that p-xylene crystallizes at ∼0.1 GPa. The X-ray diffraction (XRD) pattern at 0.84 GPa suggests that the crystallized p-xylene had a monoclinic phase with the Cc(9) space group. The sharp shrinkage of the lattice at ~13 GPa and the solid state of the decompressed sample we observed suggests a new crystalline phase of p-xylene. The in situ XRD showed that the new crystalline phase was still a monoclinic structure but with a different space group of C2(5), indicating that a phase transition occurred during further compression. The mass spectrometry experiment confirmed phase transition polymerization, with mainly trimer and tetramer polymers. Our findings suggest an easy and efficient method for crystallizing and polymerizing p-xylene under high pressure.
format	article
author	Yanzhi Bai Zhenhai Yu Ran Liu Nana Li Shuai Yan Ke Yang Bingbing Liu Dongqing Wei Lin Wang
author_facet	Yanzhi Bai Zhenhai Yu Ran Liu Nana Li Shuai Yan Ke Yang Bingbing Liu Dongqing Wei Lin Wang
author_sort	Yanzhi Bai
title	Pressure-Induced Crystallization and Phase Transformation of Para-xylene
title_short	Pressure-Induced Crystallization and Phase Transformation of Para-xylene
title_full	Pressure-Induced Crystallization and Phase Transformation of Para-xylene
title_fullStr	Pressure-Induced Crystallization and Phase Transformation of Para-xylene
title_full_unstemmed	Pressure-Induced Crystallization and Phase Transformation of Para-xylene
title_sort	pressure-induced crystallization and phase transformation of para-xylene
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/b77b9db749d8448884da8789ec066ffc
work_keys_str_mv	AT yanzhibai pressureinducedcrystallizationandphasetransformationofparaxylene AT zhenhaiyu pressureinducedcrystallizationandphasetransformationofparaxylene AT ranliu pressureinducedcrystallizationandphasetransformationofparaxylene AT nanali pressureinducedcrystallizationandphasetransformationofparaxylene AT shuaiyan pressureinducedcrystallizationandphasetransformationofparaxylene AT keyang pressureinducedcrystallizationandphasetransformationofparaxylene AT bingbingliu pressureinducedcrystallizationandphasetransformationofparaxylene AT dongqingwei pressureinducedcrystallizationandphasetransformationofparaxylene AT linwang pressureinducedcrystallizationandphasetransformationofparaxylene
_version_	1718395481514573824

Pressure-Induced Crystallization and Phase Transformation of Para-xylene

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