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Proceedings Paper

Selective photon-breaking of C-S bonds in polythiophene to form quasi-one-dimensional carbon chains in cubic nanocrystals
Author(s): ZhongMin Ren; Yongfeng Lu; H. W. Choy; Tow Chong Chong; S. C. Ng; P. Miao
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Paper 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 aequals 3.38angstrom and suggested a quasi-one-dimensional carbon chain structure along the body diagonal of the cube.

Paper Details

Date Published: 25 February 2002
PDF: 4 pages
Proc. SPIE 4426, Second International Symposium on Laser Precision Microfabrication, (25 February 2002); doi: 10.1117/12.456811
Show Author Affiliations
ZhongMin Ren, Data Storage Institute (Singapore)
Yongfeng Lu, Data Storage Institute (United States)
H. W. Choy, Data Storage Institute (Singapore)
Tow Chong Chong, Data Storage Institute (Singapore)
S. C. Ng, National Univ. of Singapore (Singapore)
P. Miao, National Univ. of Singapore (Singapore)


Published in SPIE Proceedings Vol. 4426:
Second International Symposium on Laser Precision Microfabrication

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