Chemical Physics Letters ( IF 2.8 ) Pub Date : 2019-01-30 , DOI: 10.1016/j.cplett.2019.01.036 A.A. Zaidi , A. Hu , D.E. Henneke , W.W. Duley
The irradiation of linear chain alkanes in the liquid phase is shown to be an efficient method for the formation of a variety of polyyne, CnH2, species. The chemical products remaining in liquid octane, C8H18, after irradiation with 100 fs 800 nm laser pulses from a Ti:Sapphire laser system have been characterized using surface-enhanced Raman spectroscopy (SERS) and time of flight mass spectrometry (TOFMS) and a mechanism is proposed to explain the formation of long chain polyynes from the chemical products created during irradiation. This putative reaction sequence provides an explanation for the generation of polyynes incorporating more carbon atoms than present in the parent alkane.
中文翻译:
飞秒激光辐照液态烷烃:聚炔形成机理
线性液相链烷烃在液相中的辐照被证明是形成多种多炔C n H 2物种的有效方法。使用表面增强拉曼光谱(SERS)和飞行时间质谱(TOFMS)对来自Ti:Sapphire激光系统的100 fs 800 nm激光脉冲照射后残留在液体辛烷C 8 H 18中的化学产物进行了表征并提出了一种机制来解释由辐照过程中产生的化学产物形成长链多炔。该推定的反应顺序为生成比母体烷烃中碳原子多的多炔提供了解释。