Formation of quasi-one-dimensional carbon chains in cubic nanocrystals by photon-breaking of C-S bonds inpolythiophene

Z. M. Ren, Y. F. Lu, H. W. Choy, T. C. Chong, S. C. Ng, P. Miao

Research output: Contribution to journalArticle

Abstract

A solid polythiophene pellet was ablated by a KrF excimer laser beam to deposit thin films on silicon substrates. The laser-ablated plasma was studied by optical emission spectroscopy to identify the photon-breaking of C-S bonds in the ablated heterocycles. Raman and x-ray photoelectron spectroscopy measurements of the deposited thin films also supported the selective photon-induced bond breaking. After eliminating sulfur in the molecular structures, the thin films appeared to be composed of cubic nanocrystals with a uniform size of 240 nm. X-ray diffraction measurement determined the cubic crystal structures with a lattice constant of α = 3.38 Å and suggested a quasi-one-dimensional carbon chain structure along the body diagonal of the cube.

Original languageEnglish (US)
Pages (from-to)2793-2797
Number of pages5
JournalJournal of Materials Research
Volume16
Issue number10
DOIs
StatePublished - Oct 2001

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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