کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1406683 | 1501864 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
ESIPT from S2 singlet state in 3-hydroxyflavone
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: ESIPT from S2 singlet state in 3-hydroxyflavone ESIPT from S2 singlet state in 3-hydroxyflavone](/preview/png/1406683.png)
چکیده انگلیسی
Spectra of the dual fluorescence of 3-hydroxyflavone in ethyl acetate with picoseconds time resolution were obtained at excitation by tunable picoseconds pulses of the optical parametric generator within S1 and S2 bands of absorption. Spectra dynamics reveals time development of the internal proton transfer in the excited state of molecule from the hydroxyl to the carbonyl group. The relative contribution of the tautomer form to integral emission remains essentially higher during all interval of emission observation. The obtained data directly evidence an additional channel of the internal proton transfer from the S2 singlet state of 3-hydroxyflavone with the very high kinetic rate of 0.8 × 1012 s−1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Structure - Volumes 924–926, 30 April 2009, Pages 461–465
Journal: Journal of Molecular Structure - Volumes 924–926, 30 April 2009, Pages 461–465
نویسندگان
V.I. Tomin, R. Jaworski,