Isomorphism in ternary complex: Poly(ethylene oxide), urea and thiourea

[Display omitted] We demonstrate that urea, thiourea and poly(ethylene oxide) can show isomorphism phenomenon in their ternary comoplex for the first time. The molecular level hybrid crystal lattice between urea and thiourea can be realized with the aid of poly(ethylene oxide). Herein, we demonstrat...

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Bibliographic Details
Published inChinese chemical letters Vol. 28; no. 4; pp. 888 - 892
Main Authors Ye, Hai-Mu, Hong, Liu-Ting, Gao, Yang, Xu, Jun
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.04.2017
Subjects
Complex
Isomorphism
Poly(ethylene oxide)
Thiourea
Urea
Isomorphism
Urea
Thiourea
Poly(ethylene oxide)
Complex
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Summary:[Display omitted] We demonstrate that urea, thiourea and poly(ethylene oxide) can show isomorphism phenomenon in their ternary comoplex for the first time. The molecular level hybrid crystal lattice between urea and thiourea can be realized with the aid of poly(ethylene oxide). Herein, we demonstrated that poly(ethylene oxide) (PEO), urea and thiourea can crystallize into novel ternary complex with the molar ratio of guest polymer and host small molecule as 3:2, and proved that the ternary complex behaves isomorphism phenomenon by varying the ratio between urea and thiourea for the first time. This observation gives a boost to prepare co-crystals of different small molecules that cannot be obtained by direct mixing without the aid of polymer chains.
ISSN:1001-8417
1878-5964
DOI:10.1016/j.cclet.2016.12.032