Syntheses of Biominerals under the Template of Artificial Miomembranes

人工膜模板下生物矿物的合成

• 批准号: 15340184
• 负责人: YAMAGISHI Akihiko
• 金额: $ 9.98万
• 依托单位: Ochanomizu University (2006)The University of Tokyo (2003-2005)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15340184/
• 关键词: biomineralization; LB method; TEM; First Principle Calculation; Metal Complex; EBSD; Chiral; キラル; 生体鉱物; LB膜; 原子力顕微鏡; ブルーサイト; カオリナイト; 理論シミュレーション; ブルーサイト層; 原子間力顕微鏡

This project aimed at clarifying the mechanisms of biomineralization occurring in bioorgnaisms on a molecular scale. The study was focused on the following two aspects : (1) what kind of role organic templates play in the formation of biominerals ; (2) How a variety of structures of biominerals are related to their functions. In order to solve these problems, we took an approach of utilizing artificial membranes as a template. It was attempted to simulate the syntheses of biominerals on such a membrane. As an artificial template, we used Langmuir-Blodgett (LB) films deposited onto a solid substrate. The LB films were prepared by spreading amphiphilic metal complexes onto an air-water interface. The metal complexes possessed functional groups such as COOH and NH2. These groups were thought to act as a director in forming biominerals in bioorganisms. As a result, it was shown that the orientation and density of these functional groups played a decisive role in determining the structure of biominerals. These attempts might give an insight to understanding the formation mechanism functions of biominerals.

该项目旨在从分子水平上阐明生物有机体中发生的生物矿化的机制。重点研究了以下两个方面：(1)有机模板在生物矿物的形成中起到了什么样的作用；(2)生物矿物的各种结构与其功能之间的关系。为了解决这些问题，我们采用了以人工膜为模板的方法。有人尝试在这样的膜上模拟生物矿物的合成。作为人工模板，我们使用了沉积在固体衬底上的Langmuir-Blodgett(LB)薄膜。通过将两亲性金属络合物分散在空气-水界面上制备了LB膜。金属络合物含有COOH和NH2等官能团。这些群体被认为在生物有机体中形成生物矿物质的过程中起到了指导作用。结果表明，这些官能团的取向和密度对生物矿物的结构起着决定性的作用。这些尝试可能会对理解生物矿物的形成机理和功能有一定的帮助。

项目成果

Interlayer structure in aspidolite, the Na analogue of phlogopite

• DOI: 10.1127/0935-1221/2004/0016-0891
• 发表时间: 2004-11
• 期刊: European Journal of Mineralogy
• 影响因子: 2.1
• 作者: T. Kogure;Y. Banno;R. Miyawaki

Imaging of dioctahedral 2 : 1 layers by high-resolution transmission electron microscopy (HRTEM) : possibility of recording the dehydroxylate

通过高分辨率透射电子显微镜 (HRTEM) 对双八面体 2 : 1 层进行成像：记录脱羟基的可能性

• 发表时间: 2007
• 期刊: Am. Mineral. (In press)
• 作者: T.Kogure

K.Naka, H.Sato, T.Fujita, N.Iyi, A.Yamagishi: "Induction of Circular Dichrosim by Coadsorption of Chiral and Achiral Metal Complexes on a Colloidal Clay"J.Phys.Chem.B. 107. 8469-8473 (2003)

K.Naka、H.Sato、T.Fujita、N.Iyi、A.Yamagishi：“通过手性和非手性金属配合物在胶体粘土上的共吸附诱导圆二色性”J.Phys.Chem.B。

Investigation of polytype occurrence in lepidolite by using Electron Back-Scattering Diffraction (EBSD)

使用电子背散射衍射 (EBSD) 研究锂云母中的多型发生情况

• 发表时间: 2004
• 期刊: m.Mineral. 89
• 作者: T.Kogure;Y.Banno;R.Miyawaki;T.Kogure.M.Bunno
• 通讯作者: T.Kogure.M.Bunno

Crystallographic alignments in Coccolith (Pleurochrysis carterae) Revealed by Electron Back-Scattered Diffraction (EBSD)

电子背散射衍射 (EBSD) 显示颗石藻 (Pleurochrysis carterae) 中的晶体排列

• 发表时间: 2006
• 期刊: American Mineralogist 91
• 作者: K.Saruwatari;N.Ozaki;H.Nagasawa;T.Kogure
• 通讯作者: T.Kogure