School of Chemistry, The University of Sydney, NSW 2006, Australia.
J Phys Chem A. 2011 Jul 14;115(27):7959-65. doi: 10.1021/jp203638h. Epub 2011 Jun 16.
Gas phase excitation and emission spectra of three naphthylmethyl radical chromophores are presented. These resonance-stabilized species, 1-naphthylmethyl, 2-naphthylmethyl, and α-acenaphthenyl, each possessing an sp(2) carbon adjacent to a naphthalene moiety, are studied by resonant two-color two-photon ionization, laser induced fluorescence, and dispersed fluorescence spectroscopy. Identification of the radicals is made through a combination of dispersed fluorescence and density functional theory calculations. All three species possess spectra in the 580 nm region. The possible relevance to unidentified spectroscopic features such as the diffuse interstellar bands and emission from the Red Rectangle nebula is discussed.
给出了三种萘甲基自由基发色团的气相激发和发射光谱。这些共振稳定的物质，1-萘甲基、2-萘甲基和α-苊基，每个都有一个 sp(2) 碳原子与萘部分相邻，通过共振双色双光子电离、激光诱导荧光和分散荧光光谱进行研究。自由基的鉴定是通过分散荧光和密度泛函理论计算相结合的方法实现的。所有三种物质都具有在 580nm 区域的光谱。讨论了它们与未识别的光谱特征（如弥漫星际带和红矩形星云的发射）的可能相关性。
