Journal
CARBON
Volume 46, Issue 13, Pages 1823-1825Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.carbon.2008.07.036
Keywords
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Funding
- Natural Science and Engineering Research Council of Canada (NSERC)
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Hydrogen-capped polyynes have been synthesized by 800 nm femtosecond photolysis of acetone molecules. Four bands appearing in the 1800-2200 cm(-1) range of surface enhanced Raman spectra show a mixture of polyynes with variable chain lengths in the irradiated acetone. The shortest hydrogen-terminated chain is found to be C6H2. The presence of charged carbon dimer, monomer C-2(+), C+ and double charged C2+ has been confirmed by time-of-flight mass spectroscopy. These ions are generated as irradiation products of step-wise dissociation of acetone and further act as building blocks in the synthesis of polyynes. (c) 2008 Elsevier Ltd. All rights reserved.
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