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Pressure-induced phase transition in hydrogen-bonded supramolecular adduct formed by cyanuric acid and melamine

Wang, Kai, Duan, Defang, Wang, Run, Liu, Dan, Tang, Lingyun, Cui, Tian, Liu, Bingbing, Cui, Qiliang, Liu, Jing, Zou, Bo and Zou, Guangtian 2009, Pressure-induced phase transition in hydrogen-bonded supramolecular adduct formed by cyanuric acid and melamine, Journal of physical chemistry b, vol. 113, no. 44, pp. 14719-14724, doi: 10.1021/jp9067203.

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Title Pressure-induced phase transition in hydrogen-bonded supramolecular adduct formed by cyanuric acid and melamine
Author(s) Wang, Kai
Duan, Defang
Wang, Run
Liu, DanORCID iD for Liu, Dan orcid.org/0000-0001-6875-419X
Tang, Lingyun
Cui, Tian
Liu, Bingbing
Cui, Qiliang
Liu, Jing
Zou, Bo
Zou, Guangtian
Journal name Journal of physical chemistry b
Volume number 113
Issue number 44
Start page 14719
End page 14724
Total pages 6
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2009-10-15
ISSN 1520-6106
1520-5207
Summary Single-crystal samples of the 1:1 adduct between cyanuric acid and melamine (CA·M), an outstanding case of noncovalent synthesis, have been studied by Raman spectroscopy and synchrotron X-ray diffraction in a diamond anvil cell up to pressures of 15 GPa. The abrupt changes in Raman spectra around 4.4 GPa have provided convincing evidence for pressure-induced structural phase transition. This phase transition was confirmed by angle dispersive X-ray diffraction (ADXRD) experiments to be a space group change from C2/m to its subgroup P21/m. On release of pressure, the observed transition was irreversible, and the new high-pressure phase was fully preserved at ambient conditions. We propose that this phase transition was due to supramolecular rearrangements brought about by changes in the hydrogen bonding networks.
Language eng
DOI 10.1021/jp9067203
Field of Research 029999 Physical Sciences not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2009, American Chemical Society
Persistent URL http://hdl.handle.net/10536/DRO/DU:30048630

Document type: Journal Article
Collection: Institute for Frontier Materials
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