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<p>The attachment of porphyrin molecules on electro-active surfaces opens opportunities for many different types of molecular devices. For this purpose, to achieve stable electrical contact with electrodes, <i>S</i>-protected thiol-derivatized tetraphenyl porphyrin molecules were synthesized in a good yield, by employing a modified Rothemund’s method. Porphyrin molecules were functionalized on all four meso-positions with <i>S</i>-protected <i>p</i>-thioacetylbenzaldehyde which underwent in situ cleavage and/or binding on a metal surface to form self-assembled molecular layers. The functionalization was characterized by H<sup>1</sup> NMR. Sequential FTIR and Raman spectroscopy were employed to confirm the presence of functional groups. The optical activity of tetrathiol-mesotetraphenylporphyrin was recorded with UV-Vis spectroscopy. All the characterization techniques showed successful functionalization of porphyrin molecules.</p>

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Spectral Characterization of the Synthesis of Thiol-Functionalized Tetraphenyl Porphyrin for Spintronic Applications

  • 期刊论文

  • 发表日期：

    2025年8月4日

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  • Bushra Bari,
  • Uche Udeochu,
  • Xueqing Song,
  • Pawan Tyagi

摘要

The attachment of porphyrin molecules on electro-active surfaces opens opportunities for many different types of molecular devices. For this purpose, to achieve stable electrical contact with electrodes, S-protected thiol-derivatized tetraphenyl porphyrin molecules were synthesized in a good yield, by employing a modified Rothemund’s method. Porphyrin molecules were functionalized on all four meso-positions with S-protected p-thioacetylbenzaldehyde which underwent in situ cleavage and/or binding on a metal surface to form self-assembled molecular layers. The functionalization was characterized by H1 NMR. Sequential FTIR and Raman spectroscopy were employed to confirm the presence of functional groups. The optical activity of tetrathiol-mesotetraphenylporphyrin was recorded with UV-Vis spectroscopy. All the characterization techniques showed successful functionalization of porphyrin molecules.