کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5416147 | 1393799 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sub-Doppler high-resolution excitation spectroscopy of the S1 â S0 transition of dibenzofuran
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Sub-Doppler high-resolution excitation spectroscopy of the S1 â S0 transition of dibenzofuran Sub-Doppler high-resolution excitation spectroscopy of the S1 â S0 transition of dibenzofuran](/preview/png/5416147.png)
چکیده انگلیسی
Rotationally resolved ultrahigh-resolution fluorescence excitation spectra of the S1 â S0 transition of dibenzofuran have been observed using the technique of crossing a collimated molecular beam and the single-mode UV laser beam. 3291 rotational lines of the 000 band and 3047 rotational lines of the 000+443cmâ1 (5501:b2) band have been assigned. The 000 band has been found to be a b-type transition, in which the transition moment is along the twofold symmetry axis of this molecule, and only the ÎKa = ± 1 transitions were observed. The excited state is identified to be the S11A1(ÏÏâ) state. In contrast with this, the 000+443cmâ1 (5501:b2) band has been found to be an a-type transition in which the transition moment is along the long axis in plane. It indicates that the intensity of this vibronic band arises from vibronic coupling with the S21B2(ÏÏâ) state. We determined the accurate rotational constants and the molecule have been shown to be planar both in the ground and excited states.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Spectroscopy - Volume 238, Issue 1, July 2006, Pages 49-55
Journal: Journal of Molecular Spectroscopy - Volume 238, Issue 1, July 2006, Pages 49-55
نویسندگان
Michiru Yamawaki, Yoshio Tatamitani, Atsushi Doi, Shunji Kasahara, Masaaki Baba,