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Study of the water structure on a biomaterial surface by optical sum frequency generation (SFG)

通过光学和频发生 (SFG) 研究生物材料表面的水结构

基本信息

批准号：
17540380
负责人：
SANO Haruyuki
金额：
$ 1.92万
依托单位：
JapanAdvanced Institute of Science and Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2006
项目状态：
已结题

项目摘要

In the study of biomaterial surfaces, hydration of a solid surface covered with organic molecules or metal oxide thin film is an important problem. In order to clarify hydration structure at various materials surfaces, optical sum frequency generation (SFG) spectroscopy was used.1. The effect of polymers weakly adsorbed on a quartz surface on the structure of the interfacial water molecules was investigated. As polymers, PEG, PPG, and two types of tri-block copolymer of Pluronic L64 and 17R-4 were used. SF intensity spectra of OH stretching mode of water molecules at the interface between a quartz substrate and aqueous solutions of the polymers were measured. The total SF intensity of the interfacial water of the L64 aqueous solution was smaller than those of other solutions. This result indicates that the L64 aqueous solution has smaller number of oriented interfacial water molecules. It is suggested that the rapid motion of hydrophilic parts of the adsorbed L64 disturbs the average orientation of the interfacial water molecules. On the other hand, the SF intensity from the interfacial water molecules of aqueous solutions with high ion strength did not depend on the species of the polymers in the solutions. The latter result suggests that the hydration of ions determines the structure of the interfacial water molecules.2. Hydration structure on a titanium dioxide (TiO_2) surface was observed by SF spectroscopy. It was found that as compared with a glass surface, TiO_2 surface in acidic solution has a large amount of oriented interfacial water molecules.3. Amino-terminated and fluoroalkyl-terminated glass surfaces were also investigated. It is suggested that hydration structures on these surfaces result from competition of electrostatic interaction, hydrogen bonding, and hydrophobic interaction.

在生物材料表面的研究中，覆盖有有机分子或金属氧化物薄膜的固体表面的水合是一个重要的问题。为了明确各种材料表面的水化结构，采用了光学和频光谱技术.研究了弱吸附于石英表面的聚合物对界面水分子结构的影响。作为聚合物，使用PEG、PPG和Pluronic L 64和17 R-4的两种类型的三嵌段共聚物。测量了石英基底与聚合物水溶液界面处水分子OH伸缩模的SF强度谱。L 64水溶液界面水的总SF强度小于其它溶液。这一结果表明，L 64水溶液具有较少数量的取向界面水分子。有人建议，吸附的L 64的亲水部分的快速运动扰乱了界面水分子的平均取向。另一方面，具有高离子强度的水溶液的界面水分子的SF强度不依赖于溶液中的聚合物的种类。后者的结果表明，离子的水合作用决定了界面水分子的结构.用SF光谱观察了二氧化钛（TiO_2）表面的水化结构。研究发现，与玻璃表面相比，酸性溶液中的TiO_2表面具有大量的取向界面水分子.氨基封端和氟烷基封端的玻璃表面也进行了研究。这些表面的水化结构是静电相互作用、氢键和疏水相互作用相互竞争的结果。

项目成果

期刊论文数量（14）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Effect of polymer adsorption on the water structure at the quartz/water interface studied by optical sum frequency generation

光和频发生研究聚合物吸附对石英/水界面水结构的影响

DOI：
发表时间：
期刊：
Surface Science (印刷中)
影响因子：
0
作者：
Y.Miyauchi;Y.Miyauchi;H.Hirose;Y.Miyauchi et al.;Y.Miyauchi et al.;H.Hirose et al.;Y.Miyauchi;G.Mizutani;G.Mizutani et al.;G.Mizutani;H.Sano
通讯作者：
H.Sano

Distinction between some saccharifies in scattered optical sum frequency intensity images

散射光和频强度图像中某些糖化物的区别

DOI：
发表时间：
2005
期刊：
Spectrochim. Acta A 62(4-5)
影响因子：
0
作者：
Y.Miyauchi;Y.Miyauchi;H.Hirose;Y.Miyauchi et al.;Y.Miyauchi et al.;H.Hirose et al.;Y.Miyauchi;G.Mizutani
通讯作者：
G.Mizutani

Providing natural water structure surrounding highly mobile maltose groups conjugated with polyrotaxanes

提供围绕与聚轮烷缀合的高流动性麦芽糖基团的天然水结构

DOI：
发表时间：
2006
期刊：
Polymer Journal 38(10)
影响因子：
0
作者：
Y.Miyauchi;Y.Miyauchi;H.Hirose
通讯作者：
H.Hirose

Optical second harmonic intensity images of hydrogen deficiency on H-Si(111)surfaces

H-Si(111)表面缺氢的光学二次谐波强度图像

DOI：
发表时间：
2006
期刊：
e-Journal of Surface Science and Nanotechnology 4
影响因子：
0
作者：
Y.Miyauchi;Y.Miyauchi;H.Hirose;Y.Miyauchi et al.;Y.Miyauchi et al.;H.Hirose et al.;Y.Miyauchi
通讯作者：
Y.Miyauchi

Distinction between some saccharides in scattered optical sum frequency intensity images

散射光和频强度图像中某些糖类的区别

DOI：
发表时间：
2005
期刊：
Spectrochim. Acta A 62(4-5)
影响因子：
0
作者：
Y.Miyauchi;Y.Miyauchi;H.Hirose;Y.Miyauchi et al.;Y.Miyauchi et al.;H.Hirose et al.;Y.Miyauchi;G.Mizutani;G.Mizutani et al.
通讯作者：
G.Mizutani et al.