附加层结构对AU单晶表面上和皇冠替代的氨酸阵列之间的宿主-客人识别的影响
Soichiro Yoshimoto1, Koji Suto, Akinori Tada
1Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Aoba-yama 04, Sendai 980-8579, Japan.
Journal of the American Chemical Society
|June 24, 2004
概括
这项研究表明,黄金表面的二甲酸 (CoCRPc) 附加层捕获离子. 特定的黄金表面结构 (Au(111) 与特定的黄金表面结构 (Au(111) 相比. Au(100)) 影响离子封装在15冠-5以太环内.
科学领域:
- 表面科学是一门学科.
- 超分子化学 超分子化学
- 电化学 电化学 电化学
背景情况:
- (II) 甲基酸衍生物与皇冠乙烯部分对分子识别有兴趣.
- 了解这些分子在表面上的自我组装对于设计功能性材料至关重要.
研究的目的:
- 为了研究15-皇冠-5-替代 (CoCRPc) 在Au111) 和Au100) 表面上的附加层结构.
- 为了探索表面结构对离子 (Ca2+) 封装的表面结构的影响.
主要方法:
- 在Au(111) 和Au(100) 基板上制备CoCRPc附加层.
- 在现场扫描道显微镜 (STM) 用于附层结构的高分辨率成像.
- 在含有或不含有Ca2+的水性HClO4溶液中进行电化学研究.
主要成果:
- CoCRPc在Au{11} (p{8 x 4√3R-30°)) 和Au{100) ((8 x 9) 和 (4√5 x 4√5) R26.7°) 的定义包装安排.
- 每个CoCRPc分子中的两个Ca2+离子在皇冠乙部分内选择性地被困在Au{111}上.
- 在Au100) 表面上没有观察到Ca2+封装.
结论:
- 基质的晶体结构显著影响了CoCRPc附加层的自我组装和功能性质.
- 皇冠以太部分与底层的金晶格之间的相互作用决定了捕获Ca2+离子的能力.
- 这项工作强调了表面基质相互作用在设计选择性离子结合系统中的重要性.
更多相关视频
08:29Au-Interaction of Slp1 Polymers and Monolayer from Lysinibacillus sphaericus JG-B53 - QCM-D, ICP-MS and AFM as Tools for Biomolecule-metal Studies
Published on: January 19, 2016
08:12Surface Functionalization of Metal-Organic Frameworks for Improved Moisture Resistance
Published on: September 5, 2018
相关概念视频
02:58Crystal Field Theory - Octahedral Complexes
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
02:36Crown Ethers
Crown ethers are cyclic polyethers that contain multiple oxygen atoms, usually arranged in a regular pattern. The first crown ether was synthesized by Charles Pederson while working at DuPont in 1967. For this work, Pedersen was co-awarded the 1987 Nobel Prize in Chemistry. Crown ethers are named using the formula x-crown-y, where x is the total number of atoms in the ring and y is the number of ether oxygen atoms. The term 'crown' refers to the crown-like shape that these ether molecules take.