Optical selection studies of electronic relaxation from the S1 state of jet‐cooled anthracene derivatives
Optical selection studies of electronic relaxation from the S1 state of jet‐cooled anthracene derivatives
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喷射冷却蒽衍生物S1态电子弛豫的光学选择研究
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
J. Jortner
中科院分区：
文献类型：
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作者：
A. Amirav;C. Horwitz;J. Jortner
在这篇文章中，我们研究了由量子产额数据推算出的菲的S_1流形及其7个同位素和化学衍生物的态间电子驰豫速率KnR的能量依赖性。通过同时询问Ar的种子、脉冲、平面超音速喷流中的荧光激发光谱和吸收光谱，在S1(0)以上的过剩能量EV=0-3 000 cm−1范围内，获得了电子起源S1(0)内的转动态组和振动态的绝对荧光量子产率Y。从这些分子与Ar的范德华(VDW)络合物的量子产额数据中获得了额外的信息。9-氰基菲和9，10-二溴菲的S_1(0)峰的荧光量子产率与旋转态无关，进一步证明了KNR的旋转态与单门口态无关。从电子起源的Y数据和EV Depp.
In this paper we explore the energy dependence of the interstate electronic relaxation rates knr from the S1 manifold of anthracene and seven of its isotopic and chemical derivatives, which were inferred from quantum yield data. Absolute fluorescence quantum yields Y from groups of rotational states within the electronic origin S1(0) and from vibrational states were obtained over the excess energy Ev=0–3000 cm−1 above S1(0) by the simultaneous interrogation of the fluorescence excitation spectra and of the absorption spectra in seeded, pulsed, planar supersonic jets of Ar. Additional information was obtained from quantum yield data of van der Waals (vdW) complexes of these molecules with Ar. The fluorescence quantum yields from the S1(0) of anthracene, 9‐cyano‐anthracene, and 9,10‐dibromoanthracene were found to be independent of the rotational state, providing further evidence for the rotational independence of knr from a single doorway state. From the Y data of the electronic origins and from the Ev dep...