当前位置：
X-MOL 学术
›
J. Phys. Chem. C
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Chiral Monolayers with Achiral Tetrapod Molecules on Highly Oriented Pyrolytic Graphite
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-03-31 , DOI: 10.1021/acs.jpcc.9b11246 Hitoshi Asakawa 1, 2, 3 , Sayaka Matsui 3 , Quang Thang Trinh 4 , Hajime Hirao 5 , Yasuhide Inokuma 6, 7 , Tomoki Ogoshi 2, 8 , Saki Tanaka 3 , Kayo Komatsu 3 , Akio Ohta 3 , Tsuyoshi Asakawa 3 , Takeshi Fukuma 2
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-03-31 , DOI: 10.1021/acs.jpcc.9b11246 Hitoshi Asakawa 1, 2, 3 , Sayaka Matsui 3 , Quang Thang Trinh 4 , Hajime Hirao 5 , Yasuhide Inokuma 6, 7 , Tomoki Ogoshi 2, 8 , Saki Tanaka 3 , Kayo Komatsu 3 , Akio Ohta 3 , Tsuyoshi Asakawa 3 , Takeshi Fukuma 2
Affiliation
|
The self-assembly of organic molecules at the surface of highly oriented pyrolytic graphite (HOPG) is a promising process for constructing molecular-scale architectures. However, selectable organic molecules are generally restricted to two-dimensional molecules with planar π-conjugated structures and alkyl chains. We herein present the formation of self-assembled monolayers of tetrakis(4-ethynylphenyl)methane (TEPM) having a three-dimensional (3D) tetrapod geometry on HOPG, which was achieved by utilizing a simple spin-coating method. The arrangements of TEPM molecules in the monolayers were investigated using frequency-modulation atomic force microscopy (FM-AFM). The resulting subnanometer-resolution FM-AFM images revealed that the TEPM molecules formed linear rows with a periodicity of 0.85 nm oriented in a parallel configuration but with two alternating intervals of 0.7 and 1.0 nm. Moreover, the TEPM monolayers were classified into two chiral types with a relationship of mutual mirror-image symmetry, according to the observed molecular arrangements. Our results demonstrate the capability of TEPM molecules to act as 3D building blocks for the design of molecular-scale architectures at interfaces.
中文翻译：
高度取向的热解石墨上非手性四足形分子的手性单分子膜
在高度取向的热解石墨（HOPG）表面上有机分子的自组装是构建分子规模体系结构的有前途的过程。然而，可选择的有机分子通常限于具有平面π共轭结构和烷基链的二维分子。我们在本文中提出了HOPG上具有三维（3D）四脚架几何形状的四（4-乙炔基苯基）甲烷（TEPM）自组装单层的形成，这是通过使用简单的旋涂方法实现的。使用调频原子力显微镜（FM-AFM）研究了TEPM分子在单层中的排列。所得的亚纳米级分辨率FM-AFM图像显示TEPM分子形成了周期性为0的线性行。85 nm以平行配置定向，但有两个交替的0.7和1.0 nm间隔。此外，根据观察到的分子排列，将TEPM单层分为具有相互镜像对称关系的两种手性类型。我们的结果证明了TEPM分子在界面设计分子级体系结构中充当3D构建块的能力。
更新日期：2020-03-31
中文翻译：
高度取向的热解石墨上非手性四足形分子的手性单分子膜
在高度取向的热解石墨（HOPG）表面上有机分子的自组装是构建分子规模体系结构的有前途的过程。然而，可选择的有机分子通常限于具有平面π共轭结构和烷基链的二维分子。我们在本文中提出了HOPG上具有三维（3D）四脚架几何形状的四（4-乙炔基苯基）甲烷（TEPM）自组装单层的形成，这是通过使用简单的旋涂方法实现的。使用调频原子力显微镜（FM-AFM）研究了TEPM分子在单层中的排列。所得的亚纳米级分辨率FM-AFM图像显示TEPM分子形成了周期性为0的线性行。85 nm以平行配置定向，但有两个交替的0.7和1.0 nm间隔。此外，根据观察到的分子排列，将TEPM单层分为具有相互镜像对称关系的两种手性类型。我们的结果证明了TEPM分子在界面设计分子级体系结构中充当3D构建块的能力。
京公网安备 11010802027423号