Selective photon-breaking of C-S bonds in polythiophene to form quasi-one-dimensional carbon chains in cubic nanocrystals

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

Research output: Contribution to journalConference article

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. The selective photon-induced bond breaking was also supported by Raman and X-ray photoelectron spectroscopy measurements of the deposited thin films. The thin films appeared to be composed of cubic nanocrystals with an uniform size of 240 nm. X-ray diffraction measurement determined the cubic crystal structures with a lattice constant of a = 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)35-38
Number of pages4
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4426
DOIs
StatePublished - 2002
EventSecond International Symposium on Laser Precision Microfabrication - Singapore, Singapore
Duration: May 16 2001May 18 2001

Keywords

  • Carbon
  • Carbon chain
  • Cubic nanocrystal
  • One-dimensional
  • Photon bond-breaking

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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