Conformational Change in Molecular Assembly of Nickel(II) Tetra(n-propyl)porphycene Triggered by Potential Manipulation
Conformational Change in Molecular Assembly of Nickel(II) Tetra(n-propyl)porphycene Triggered by Potential Manipulation
复制标题
电位操纵引发镍(II)四(正丙基)卟啉分子组装的构象变化
DOI：
10.1021/acs.langmuir.6b03782
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发表时间：
2016
期刊：
影响因子：
3.9
通讯作者：
and Masaaki Abe
中科院分区：
文献类型：
--
作者：
Soichiro Yoshimoto;Teppei Kawamoto;Toru Okawara;Yoshio Hisaeda;and Masaaki Abe
金属配位的卟啉及其相关化合物对于开发模拟酶的分子结构非常重要。卟啉是一种卟啉的结构异构体，在半人工肌红蛋白中表现出独特的性质。为了探索其作为分子构件的潜力，我们用原位扫描隧道显微镜研究了镍(II)四(正丙基)卟烯(NiTPrPc)在Au(111)电极表面的分子组装。由于NiTPrPc的低分子对称性，由于当时丙基部分的构象变化，分子组装经历了独特的相变。电极电势可以精确控制相变，表明电极电势在卟烯分子在金表面的组装过程中起着重要的作用。这一新发现表明了这种卟烯骨架在分子工程中的可能用途。
Metal-coordinated porphyrin and related compounds are important for developing molecular architectures that mimic enzymes. Porphycene, a structural isomer of porphyrin, has shown unique properties in semiartificial myoglobin. To explore its potential as a molecular building block, we studied the molecular assembly of nickel(II) tetra(n-propyl)porphycene (NiTPrPc), a metalloporphycene with introduced tetran-propyl moieties, on the Au(111) electrode surface using in situ scanning tunneling microscopy. Because of the low molecular symmetry of NiTPrPc, the molecular assembly undergoes unique phase transitions due to conformational change of then-propyl moieties. The phase transitions can be precisely controlled by the electrode potential, demonstrating that the latter can play an important role in the porphycene molecular assembly on Au surface. This new discovery indicates possible uses of this porphycene framework in molecular engineering.