title: Characterization of nanoporous cavity of quardruply bridged calix[6]arenes by means of hyperpolarized 129Xe NMR.
abstract: 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.
authors.affiliation: Gwangju Center, Korea Basic Science Institute, Gwangju 500-757, Korea.
authors.forename: Young Ju
authors.initials: YJ
authors.lastname: Lee
authors.forename: Ki Deok
authors.initials: KD
authors.lastname: Park
authors.forename: Hyoung Min
authors.initials: HM
authors.lastname: Yeo
authors.forename: Byung Ju
authors.initials: BJ
authors.lastname: Ryu
authors.forename: Kye Chun
authors.initials: KC
authors.lastname: Nam
authors.forename: Mineyuki
authors.initials: M
authors.lastname: Hattori