Conformational Change in Molecular Assembly of Nickel(II) Tetra(n-propyl)porphycene Triggered by Potential Manipulation

Soichiro Yoshimoto, Teppei Kawamoto, Toru Okawara, Yoshio Hisaeda, Masaaki Abe

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

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 tetra n-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 the n-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.

Original languageEnglish
Pages (from-to)13635-13639
Number of pages5
JournalLangmuir
Volume32
Issue number51
DOIs
Publication statusPublished - Dec 27 2016

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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