Direct synthesis of polyyne molecules in acetone by dissociation using femtosecond laser irradiation

被引：57

作者：

Hu, A. ^{[1
,2
]}

Sanderson, J. ^{[2
]}

Zaidi, A. A. ^{[2
]}

Wang, C. ^{[2
]}

Zhang, T. ^{[3
]}

Zhou, Y. ^{[1
]}

Duley, W. W. ^{[2
]}

机构：

[1] Univ Waterloo, Dept Mech & Mechatron Engn, Waterloo, ON N2L 3G1, Canada

[2] Univ Waterloo, Dept Phys & Astron, Waterloo, ON N2L 3G1, Canada

[3] Southeast Univ, Sch Elect Sci & Engn, Nanjing 210096, Peoples R China

来源：

CARBON | 2008年 / 46卷 / 13期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/j.carbon.2008.07.036

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：1823 / 1825

页数：3

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