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Updated: Sep 24, 2025
Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
Published on: March 4, 2021
Supramolecular structures of terbium(iii) porphyrin double-decker complexes on a single-walled carbon nanotube
Ahmed I A Abd El-Mageed1,2, Takuji Ogawa1
1Chemistry Department, Graduate School of Science, Osaka University Machikaneyama 1-1 Toyonaka Osaka 560-0043 Japan abdelmageeda13@chem.sci.osaka-u.ac.jp Ogawa@chem.sci.osaka-u.ac.jp.
Abstract:
This work mainly reports the observation of novel supramolecular structures of TbIII-5,15-bisdodecylporphyrin (BDP, C12P) double-decker complexes on the surfaces of single-walled carbon nanotubes (SWNTs) performed by scanning tunneling microscopy under an ultra-high vacuum and low temperature, atomic force microscopy, scanning electron microscopy coupled with energy dispersive spectroscopy, and ultraviolet-visible spectroscopy. The molecules formed a well-ordered self-assembled helix-shaped array with regular periodicity on the tube surface. Additionally, some magnetic properties of the BDP-molecule as well as the resulting BDP-SWNT composites were investigated by superconducting quantum interference measurements. The molecule exhibits single-molecule magnetic (SMM) properties and the composite's magnetization increases almost linearly with decreasing temperature which is possibly due to the coupling between porphyrin molecules and SWNTs. Consequently, this may enable the development of more advanced spintronic devices based on porphyrin-nanocarbon composites.
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