Radboud University Nijmegen, Institute for Molecules and Materials, Nijmegen, The Netherlands.
Phys Chem Chem Phys. 2013 Aug 14;15(30):12451-8. doi: 10.1039/c3cp50829c.
Self-assembled monolayers of meso-5,10,15,20-tetrakis(undecyl)porphyrin copper(II) on a graphite/1-octanoic acid interface have been studied by Scanning Tunnelling Microscopy. Four distinct polymorphs were observed, varying in their unit cell size. Arrays of unit cells of the various polymorphs seamlessly connect to each other via shared unit cell vectors. The monolayers are not commensurate, but coincident with the underlying graphite substrate. The seamless transition between the polymorphs is proposed to be the result of an adaptation of the molecular conformations in the polymorphs and at the boundaries, which is enabled by the conformational freedom of the alkyl tails of these molecules.
通过扫描隧道显微镜研究了石墨/辛酸界面上的间-5,10,15,20-四（十一烷基）卟啉铜（II）的自组装单层。观察到了四种不同的多晶型物，它们的晶胞大小不同。各种多晶型物的晶胞阵列通过共享晶胞向量无缝连接。这些单层与下面的石墨衬底并不一致，但却是重合的。多晶型物之间的无缝转变被认为是多晶型物和边界处分子构象适应的结果，这种适应是由这些分子的烷基链的构象自由度所允许的。
