Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/50930
Title: Formation of quasi-one-dimensional carbon chains in cubic nanocrystals by photon-breaking of C-S bonds inpolythiophene
Authors: Ren, Z.M.
Lu, Y.F. 
Choy, H.W.
Chong, T.C. 
Ng, S.C. 
Miao, P.
Issue Date: Oct-2001
Source: Ren, Z.M.,Lu, Y.F.,Choy, H.W.,Chong, T.C.,Ng, S.C.,Miao, P. (2001-10). Formation of quasi-one-dimensional carbon chains in cubic nanocrystals by photon-breaking of C-S bonds inpolythiophene. Journal of Materials Research 16 (10) : 2793-2797. ScholarBank@NUS Repository.
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.
Source Title: Journal of Materials Research
URI: http://scholarbank.nus.edu.sg/handle/10635/50930
ISSN: 08842914
Appears in Collections:Staff Publications

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