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An antiferromagnetic {Mn_8} ring supported by planar multidentate ligands

Science China Chemistry 2012年第6期55卷 973-977页

作者： NEWTON Graham N. shiga takuya OSHIO Hiroki Graduate School of Pure and Applied Sciences Department of Chemistry University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8571 Japan

Complexation of the planar multidentate ligand 3,5-bis-(2-hydroxyphenyl)pyrazole (H 3 L) with manganese chloride leads to the formation of the polynuclear complex [Mn Ⅲ 8 L 4 O 4 (MeO) 4 (MeOH) 8 ] (1). 1 has an octanuclear macrocyclic core in which the MnⅢ ions are bridged by four L molecules to form a ring type structure. Antiferromagnetic interactions were shown to be operative between metal centers.

关键词：反铁磁相互作用多齿配体平面多核络合物羟基苯基环型结构金属中心 MEO

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An antiferromagnetic {Mn8} ring supported by planar multidentate ligands

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中国科学:化学 2012年第6期42卷 903-904页

作者： NEWTON Graham N. shiga takuya OSHIO Hiroki Graduate School of Pure and Applied Sciences Department of Chemistry University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8571 Japan

Complexation of the planar multidentate ligand 3,5-bis-(2-hydroxyphenyl)pyrazole (H3L) with manganese chloride leads to the formation of the polynuclear complex [MnⅢ8L4O4(MeO)4(MeOH)8] (1). 1 has an octanuclear macrocyclic core in which the MnⅢ ions are bridged by four L molecules to form a ring type structure. Antiferromagnetic interactions were shown to be operative between metal centers.

关键词： manganese magnetism antiferromagnetic ring complex planar ligands

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An openable artificial intestinal tract system for the in vitro evaluation of medicines

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Microsystems & Nanoengineering 2015年第1期1卷 106-111页

作者： Satoshi Konishi takuya Fujita Koji Hattori Yusuke Kono Yoshifumi Matsushita Department of Mechanical Engineering Ritsumeikan University1-1-1 Noji-higashiKusatsuShiga 525-8577Japan Department of Pharmaceutical Sciences Ritsumeikan University1-1-1 Noji-higashiKusatsuShiga 525-8577Japan Ritsumeikan-Global Innovation Research Organization Ritsumeikan University1-1-1 Noji-higashiKusatsuShiga 525-8577Japan Graduate School of Science and Engineering Ritsumeikan University1-1-1 Noji-higashiKusatsuShiga 525-8577Japan

In vitro drug screening systems for pharmacological targets have been studied as substitutes for whole-animal *** cells or tissues provide promising substitution models when coupled with technological innovations in micro total analysis *** this study,we focus on an intestinal drug absorption assay,as the oral route is most frequently used for drug *** studies have reported the development of artificial vessels that include tubular ***,it is difficult to observe the insides of these tubes in *** address this problem,we developed a micro-device that uses a pneumatic balloon actuator(PBA)to open and close an artificial intestinal tract.A human colon carcinoma cell line(Caco-2)was cultivated on the flat surface of the micro-device for 7 days to form the inner cellular layer of an artificial intestinal tract with which to evaluate drug *** artificial intestinal tract was completely actuated from a flat plate to a circular tube via a PBA with a pressure of 65 kPa,and drugs were perfused at a flow rate of 0.05 mL min^(−1) into the tubular artificial intestinal tract for 1 *** the openable artificial intestinal tract,the in vitro absorption of calcein and Texas Red were successfully estimated as models of hydrophilic and hydrophobic drugs,*** artificial intestinal tract enables the effective evaluation of the in vitro intestinal absorption of drug candidates and contributes to the reduction of costs incurred during the initial stage of drug development.

关键词： Caco-2 cells drug absorption intestinal tract microfluidic device pneumatic balloon actuator

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