Nanopatterning of donor/acceptor hybrid supramolecular architectures on highly oriented pyrolytic graphite: a scanning tunneling microscopy study.
Nanopatterning of donor/acceptor hybrid supramolecular architectures on highly oriented pyrolytic graphite: a scanning tunneling microscopy study.
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DOI：
10.1021/ja8040515
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发表时间：
2008-10-08
影响因子：
15
通讯作者：
Stang, Peter J.
中科院分区：
文献类型：
--
作者：
Wang, Ling;Chen, Qing;Pan, Ge-Bo;Wan, Li-Jun;Zhang, Shiming;Zhan, Xiaowei;Northrop, Brian H.;Stang, Peter J.
在高取向热解石墨表面制备了受主1，4-bis(4-pyridylethynyl)-2，3-bis-dodecyloxy-benzene和施主2，6-bis(3，4，5-tris-dodecyloxy-phenyl)dithieno[3，2-b:2′，3′-d]thiophene杂化超分子结构，并用扫描隧道显微镜和扫描电子能谱对其结构和分子电导进行了表征。此外，还研究了PBP和DTT稳定的单组分包覆层。PBP和DTT的双组分混合物的共吸附导致了各种不同于它们各自的单组分表面组装的杂化纳米图案结构。在混合附着层组装中调整受体/施主摩尔比会导致杂化纳米管的结构发生显著变化。STS测量表明，PBP和DTT在HOPG表面的HOMO和LUMO能级对杂化超分子结构的变化相对不敏感。这些结果为二维杂化超分子体系的设计和制备提供了重要的启示。
Hybrid supramolecular architectures have been fabricated with acceptor 1,4-bis(4-pyridylethynyl)-2,3-bis-dodecyloxy-benzene (PBP) and donor 2,6-bis(3,4,5-tris-dodecyloxy-phenyl)dithieno[3,2-b:2′,3′-d]thiophene (DTT) compounds on highly oriented pyrolytic graphite (HOPG) surfaces and their structures and molecular conductance are characterized by scanning tunneling microscopy/spectroscopy (STM/STS). Stable, one-component adlayers of PBP and DTT are also investigated. The coadsorption of two-component mixtures of PBP and DTT results in a variety of hybrid nanopattern architectures that differ from those of their respective one-component surface assemblies. Adjusting the acceptor/donor molar ratio in mixed adlayer assemblies results in dramatic changes in the structure of the hybrid nanopatterns. STS measurements indicate that the HOMO and LUMO energy levels of PBP and DTT on an HOPG surface are relatively insensitive to changes in the hybrid supramolecular architectures. These results provide important insight into the design and fabrication of two-dimensional hybrid supramolecular architectures.
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影响因子：
16.6
作者：
Canas-Ventura, Marta E.;Xiao, Wende;Fasel, Roman
通讯作者：
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影响因子：
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作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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影响因子：
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作者：
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