Please use this identifier to cite or link to this item: https://doi.org/10.1117/12.456811
Title: Selective photon-breaking of C-S bonds in polythiophene to form quasi-one-dimensional carbon chains in cubic nanocrystals
Authors: Ren, Z.M.
Lu, Y.F. 
Choy, H.W.
Chong, T.C. 
Ng, S.C. 
Miao, P.
Keywords: Carbon
Carbon chain
Cubic nanocrystal
One-dimensional
Photon bond-breaking
Issue Date: 2002
Source: Ren, Z.M., Lu, Y.F., Choy, H.W., Chong, T.C., Ng, S.C., Miao, P. (2002). Selective photon-breaking of C-S bonds in polythiophene to form quasi-one-dimensional carbon chains in cubic nanocrystals. Proceedings of SPIE - The International Society for Optical Engineering 4426 : 35-38. ScholarBank@NUS Repository. https://doi.org/10.1117/12.456811
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.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
URI: http://scholarbank.nus.edu.sg/handle/10635/51245
ISSN: 0277786X
DOI: 10.1117/12.456811
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