Surface confined metallosupramolecular architectures: formation and scanning tunneling microscopy characterization.
Surface confined metallosupramolecular architectures: formation and scanning tunneling microscopy characterization.
复制标题
表面限制金属超分子结构：形成和扫描隧道显微镜表征。
DOI：
10.1021/ar800117j
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发表时间：
2009-02-17
影响因子：
18.3
通讯作者：
Stang, Peter J.
中科院分区：
文献类型：
--
作者：
Li, Shan-Shan;Northrop, Brian H.;Yuan, Qun-Hui;Wan, Li-Jun;Stang, Peter J.
Metallosupramolecular compounds have attracted a great deal of attention over the past two decades largely because of their unique, highly-complex structural characteristics, the fact that they can be prepared with relative ease using coordination-driven self-assembly techniques, and their potential electronic, magnetic, optical, and catalytic properties. In particular, the use of electron-poor square planar Pt(II) transition metals in conjunction with rigid, electron-rich pyridyl donors had enabled the spontaneous self-assembly of a rich library of 2D metallacyclic and 3D metallacage assemblies via the directional-bonding approach. With the tremendous progress that has been made in the preparation and characterization of metallosupramolecules, much attention is now being turned toward fully exploring and developing their materials properties. Assembling metallosupramolecular compounds on solid supports represents a vitally important step toward developing their materials properties. Surfaces provide a means of uniformly aligning and orienting these highly symmetric metallacycles and metallacages, which increases the level of coherence between molecules above that which can be achieved in the solution phase and affords a means of integrating adlayers into a solid-state materials setting. The dynamic nature of kinetically labile Pt(II)-N coordination bonds, however, requires that deposition and imaging conditions be appropriate to retain the assemblies' stability. Toward these aims it is imperative to understand the factors that govern surface self-assembly and the interactions that influence the structure and stability of the resulting adlayer. Such insight can be obtained from Scanning Tunneling Microscopy (STM), which has emerged as a powerful technique for the imaging and characterization of self-assembled adlayers. This account describes the means by which 2D rectangular and square metallacycles and 3D trigonal bipyrimidal and chiral trigonal prism metallacages can be deposited on Highly Oriented Pyrolytic Graphite (HOPG) and Au(111) substrates such that the assemblies remain intact and result in ordered adlayers. The effects of varying the size, symmetry, and dimensionality of supramolecular adsorbates, the choice of substrate, the use of a molecular template, and the effects of chirality have been investigated. These systematic investigations provide much insight into the various adsorbate-adsorbate and substrate-adsorbate interactions that largely determine the architecture of each assembly and affect their performance in a materials setting. Exhibiting the ability to rationally control adlayer formation and structure will greatly enhance the potential of these supramolecules to be used in a variety of applications such as in host-guest sensing/diagnostic systems, molecular electronic devices, and in heterogeneous stereoselective synthesis and catalysis.
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影响因子：
15
作者：
Kuehl, CJ;Huang, SD;Stang, PJ
通讯作者：
Stang, PJ
影响因子：
20.6
作者：
Lee, Suk Joong;Hupp, Joseph T.
通讯作者：
Hupp, Joseph T.
DOI：
10.1073/pnas.012540799
发表时间：
2002-04-16
影响因子：
11.1
作者：
Kuehl, CJ;Kryschenko, YK;Stang, PJ
通讯作者：
Stang, PJ
DOI：
10.1073/pnas.0409145102
发表时间：
2005-01-25
影响因子：
11.1
作者：
Gong, JR;Wan, LJ;Stang, PJ
通讯作者：
Stang, PJ
影响因子：
15
作者：
Caskey, Douglas C.;Yamamoto, Takuya;Stang, Peter J.
通讯作者：
Stang, Peter J.