What is it about?

This work mainly reports observation of novel supramolecular structures of TbIII-5,15-bisdodecylporphyrin (BDP, C12P) double-decker complex 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 possibly due to the coupling between porphyrin molecules and SWNT. Consequently, this may enable the development of more advanced spintronic devices based on porphyrin–nanocarbon composites.

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Why is it important?

In this study, for the first time, we successfully observed the supramolecular structures of TbIII-porphyrin double-decker complex (i.e., TbIII-5,15-bisdodecylporphyrin(TbIII-BDP)) on the surfaces of SWNTs using the common types of scanning probe microscopy (SPM), i.e., STM and AFM.


Writing this article was a great pleasure as it has co-authors with whom I have had long standing collaborations.

Dr. Ahmed I. A. Abd El-Mageed
Minia University

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This page is a summary of: Supramolecular structures of terbium(iii) porphyrin double-decker complexes on a single-walled carbon nanotube surface, RSC Advances, January 2019, Royal Society of Chemistry,
DOI: 10.1039/c9ra05818d.
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