Electronic spectroscopy and dynamics of the low‐lying A 3Σ+u, C 3Δu, and c 1Σ−u states of O2 in van der Waals solids
Electronic spectroscopy and dynamics of the low‐lying A 3Σ+u, C 3Δu, and c 1Σ−u states of O2 in van der Waals solids
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范德华固体中 O2 低位 A 3Σ+u、C 3Δu 和 c 1Σ−u 态的电子能谱和动力学
DOI：
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发表时间：
1977
期刊：
影响因子：
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通讯作者：
L. Brus
中科院分区：
文献类型：
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作者：
J. Goodman;L. Brus
与气相中的O2不同，固溶体中O2在2900-2400 A的吸收主要由C 3Δu←X 3 −g跃迁控制。固体N2基质中v=0 C3 Δ1发射的同位素分辨激发光谱提供了详细的振动和电子C3 Δ光谱参数。这些数据建立了气相和固体中C3 Δ和c1 Δ的绝对振动编号。通过分析v C 3Δ2和v−2 A 3 +u之间的扰动级数，我们发现这种宿主诱导的相互作用的特征是一个27 cm−1的矩阵元。单重态和三重态激发态内的振动弛豫在N2、Ar和N2中是“快"的。实验证明，这些光谱发生在孤立的O2单体。激发O_2光化学似乎发生在N_2宿主中，而不是在N_2宿主中。重新解释了Rebane等人的双共振实验。
The 2900–2400 A absorption of O2 in solid solutions is dominated by the C 3Δu←X 3Σ−g transition, unlike O2 in the gas phase. Isotopically resolved excitation spectra of v=0 C 3Δ1 emission in solid N2 host provide detailed vibrational and electronic C 3Δ spectroscopic parameters. The data establish absolute vibrational numbering for C 3Δ and c 1Σ, in the gas phase as well as in the solid. A progression of perturbations between v C 3Δ2 and v−2 A 3Σ+u is analyzed to show that this host induced interaction is characterized by a 27 cm−1 matrix element. Vibrational relaxation within both singlet and triplet excited states is ’’fast’’ in N2, Ar, and Xe hosts. It is experimentally proven that these spectra occur in isolated O2 monomers. Excited O2 photochemistry appears to occur in Xe host, but not in N2 host. A double resonance experiment of Rebane et al. is reinterpreted.