Characterization of Nanoporous Cavity of Quardruply Bridged Calix[6]arenes by Means of Hyperpolarized 129Xe NMR
The bridged calix[6]arenes, which are well known as cavitands to capture ions and molecules, were characterized via the hyperpolarized 129Xe NMR. Also, we could deduce the pathway of a guest molecule into hosts and estimate the pore diameter of bridged calix[6]arenes. The characterized results of nanoporous cavity by the hyperpolarized 129Xe NMR corresponded with the measurement from the X-ray structure. This study showed that the hyperpolarized 129Xe NMR could be used as a promising tool to characterize nanoporous cavity of host compounds with low surface area.
Keywords: BRIDGED CALIX[6]ARENES; CALIXARENE; CHARACTERIZATION OF NANOPOROUS CAVITY; HYPERPOLARIZED 129XE NMR
Document Type: Research Article
Publication date: 01 May 2010
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