Dynamic Structure of Nanospace as Studied by Xenon-129 NMR porosimetry

Xenon-129 NMR 孔隙度测定法研究纳米空间的动态结构

• 批准号: 16550013
• 负责人: UEDA Takahiro
• 金额: $ 2.37万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16550013/
• 关键词: Xenon-129NMR spectroscopy; Nano-space; 1-D nanochannel; Microemulsion; Dynamics; Porosimetry; NMR; ゼオライト; 活性炭素繊維

In this research, dynamic character of nano-space formed by microemulsion, metallic complex and organic zeolite was investigated by Xenon-129 nuclear magnetic resonance (NMR) spectroscopy, in order to discover and clarification of their novel physicochemical properties.At first, we conducted ^<13>C and ^<129>Xe NMR measurements on typical inorganic zeolites to examine guest-guest and/or guest-host interactions as well as the local structure of adsorbates on the adsorption process.Next, we developed this methodology into metal-organic framework [M_2(O_2CPh)_4(pyz)]_n=Cu, Rh) together with xenon high-pressure adsorption isotherm measurements. It was found that adsorption of xenon in this specimen takes place by forming dimer structure of xenon.In addition, we also applied ^<129>Xe NMR to microemulsion in ternary system of pentaethyleneglycol monododecylether/heavy water/decane. We found that ^<129>Xe chemical shift in decane showed good correlation with the dynamic mean radius of microemulsion. This aspect strongly suggests that ^<129>Xe chemical shift becomes new measure to determine the microemulsion size.Thus, we have clarified and achieved our original aim in this research project. Furthermore, we found the possibility of the newly development of this methodology such as determination of microemulsion size and probe of intermolecular interaction in the nanospace. Future new development of ^<129>XeNMR porosimetry is expected.

本研究采用~（129）Xe核磁共振（NMR）技术研究了微乳液、金属配合物和有机分子筛形成纳米空间的动力学特征，以发现和阐明它们的新的物理化学性质。<13>其次，我们将该方法应用于金属有机骨架[M_2（O_2CPh）_4（pyz）]_n = Cu，Rh）和氙的高压吸附等温线的测量。<129>此外，我们还对五甘醇单十二醚/重水/癸烷三元体系中的微乳液进行了~1H NMR研究。<129>结果表明，正癸烷的化学位移与微乳液的动态平均半径有很好的相关性。<129>这一点有力地说明，化学位移成为测定微乳液粒径的新手段，从而阐明并实现了本课题的研究初衷。<129>此外，我们发现了这种方法的新发展的可能性，如微乳液的大小和探针的分子间相互作用在纳米空间的测定。展望了~1H XeNMR孔隙率测定技术的新发展。<129>

项目成果

Local structure of xenon adsorbed in the nanospaces of zeolites as studied by high-pressure 129Xe NMR.

通过高压 129Xe NMR 研究了吸附在沸石纳米空间中的氙的局部结构。

• DOI: 10.1039/b604633a
• 发表时间: 2006
• 期刊: Physical chemistry chemical physics : PCCP
• 作者: H. Omi;T. Ueda;N. Kato;K. Miyakubo;T. Eguchi
• 通讯作者: T. Eguchi

^<129>Xe NMR Spectroscopy and 129Xe Chemical Shift Tensor as a Probe to examine Physico-chemical Properties of NaonSpace

^<129>Xe NMR 光谱和 129Xe 化学位移张量作为探针来检查 NaonSpace 的物理化学性质

• 发表时间: 2004
• 期刊: Trends in Applied Spectroscopy 5
• 作者: T.Ueda;H.Nakayama;T.Eguchi
• 通讯作者: T.Eguchi

^<129>Xe NMR Spectroscopy and ^<129>Xe Chemical Shift Tensor as a Probe to examine Physico-chemical Properties of Nanospace

^<129>Xe NMR 光谱和 ^<129>Xe 化学位移张量作为探针来检查纳米空间的物理化学性质

• 发表时间: 2004
• 期刊: Trends in Applied Spectroscopy 5
• 作者: Toshiya KOKAMA;Osamu ABE;T.Ueda
• 通讯作者: T.Ueda

Dynamics of CO2 molecules confined in the micropores of solids as studied by 13C NMR

• DOI: 10.1016/j.apsusc.2005.02.048
• 发表时间: 2005-10
• 期刊: Applied Surface Science
• 影响因子: 6.7
• 作者: H. Omi;T. Ueda;K. Miyakubo;T. Eguchi

Solid-state ^2H NMR Study of Nanocrystal Formation of D_2O and their Dynamic Aspects in ACF Hydrophobic Nanospaces

ACF疏水纳米空间中D_2O纳米晶体形成及其动态方面的固态^2H NMR研究

• 发表时间: 2007
• 期刊: Chem. Lett 36
• 作者: H.;Omichi;T.;Ueda;K.;Miyakubo;T.;Eguchi
• 通讯作者: Eguchi