کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9605780 | 44108 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photophysics of 1-hydroxy-9-fluorenone: absence of excited state intramolecular proton transfer reaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Photophysics of 1-hydroxy-9-fluorenone: absence of excited state intramolecular proton transfer reaction Photophysics of 1-hydroxy-9-fluorenone: absence of excited state intramolecular proton transfer reaction](/preview/png/9605780.png)
چکیده انگلیسی
Absorption, fluorescence, fluorescence excitation spectroscopy and time dependence fluorimetric studies of 1-hydroxy-9-fluorenone (1-HFu) and 1-methoxy-9-fluorenone (1-MFu) have been studied in different solvents. Both these molecules exhibit only one small Stokes shifted and similar fluorescence band, even in ultra dry cyclohexane. This suggests that excited state intramolecular proton transfer (ESIPT) reaction is not observed in 1-HFu. The electronic structure calculations were carried out on each species using semi-empirical AM1 and CNDO/S-CI methods, as well as, hybrid density-functional theory (DFT) B3LYP with 6-31 Gââ basis set to find out the cause for non-observance of ESIPT in 1-HFu.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 169, Issue 1, 1 January 2005, Pages 79-88
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 169, Issue 1, 1 January 2005, Pages 79-88
نویسندگان
Manoj K. Nayak, S.K. Dogra,