Nanostructuring of self-assembled porphyrin networks at a solid/liquid interface: local manipulation under global control.
Nanostructuring of self-assembled porphyrin networks at a solid/liquid interface: local manipulation under global control.
复制标题
固/液界面自组装卟啉网络的纳米结构：全局控制下的局部操作。
DOI：
10.1002/cphc.201402449
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
S. Speller
中科院分区：
文献类型：
--
作者：
M. Coenen;T. Khoury;M. Crossley;B. Hendriksen;J. Elemans;S. Speller
（5，10，15，20-tetraundecylporphyrinato）-copper（II）[（TUP）Cu]分子在高取向热解石墨和1-辛酸之间的界面处可以自组装成四种不同的多晶型物。扫描隧道显微镜（STM）揭示，它是可能的结合联合收割机的整体控制单层结构，提供的组成和浓度的上清液，与局部控制，从纳米操纵的STM尖端。在最初形成的单层中，具有由上清液中的（TUP）Cu的浓度决定的多晶型组合物，在固/液界面处物理吸附的分子与液体中的分子的交换非常有限。通过在尖端处使用纳米刮削程序，在单层中产生缺陷，并且这些缺陷用作局部操作位点以产生较高或较低分子密度的域，并且将第二分子物种（TUP）Co并入（TUP）Cu的单层中。
Molecules of (5,10,15,20-tetraundecylporphyrinato)-copper(II) [(TUP)Cu] can self-assemble into four different polymorphs at the interface between highly oriented pyrolytic graphite and 1-octanoic acid. Scanning tunneling microscopy (STM) reveals that it is possible to combine the global control over monolayer structure, provided by the composition and concentration of the supernatant solution, with local control, from nanomanipulation by the STM tip. In the initially formed monolayer, with a polymorph composition governed by the concentration of (TUP)Cu in the supernatant solution, the exchange of molecules physisorbed at the solid/liquid interface with those in the liquid is very limited. By using a nanoshaving procedure at the tip, defects are created in the monolayer, and these serve as local manipulation sites to create domains of higher or lower molecular density, and to incorporate a second molecular species, (TUP)Co into the monolayer of (TUP)Cu.