Fabrication of carbon chains (pseudo carbynes) by stabilization with gold-thiol complex

J. Jesús Velázquez Salazar, Daniel Bahena, Alexander Lehr, Pilarisetty Tarakeshwar, John Sanchez, Blake Rogers, Román Caudillo, Guowu Lin, Guillermo Calero, Miguel José Yacaman

Research output: Contribution to journalArticlepeer-review


The quest for crystals of sp1 bonded carbon chains or carbynes has been a goal of several research groups. In this paper, we report a new method based on chemical synthesis that can produce a large amount of polycrystalline carbon chains. We use a solution of 1-dodecanothiol and gold salts that are subjected to microwave radiation. The resulting material is a white powder containing carbon chains stabilized by thiolates as predicted by Tarakeshwar et al. [1]. We used Raman spectroscopy, X Ray Diffraction, and TEM to characterize the material. After crystallization of the sample, we found a prominent phase, a hexagonal lattice with (P6mm) space group and parameters a = 6.2 Å and c = 8.8 Å. However, other phases might be present. Gold nanoparticles with thiolate on the surface act as catalysts for chain formation and this promotes the rapid growth of carbon chains. Our material is a pseudo carbyne and not a pure carbon allotrope since it contains gold and sulfur. Nevertheless, this work opens the door to fabricating enough material for research on the properties of sp1 bonded carbon materials.

Original languageEnglish (US)
Article number119118
StatePublished - May 2024

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science


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