کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
27311 44015 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Linkage-structure dependences of the spectroscopic and photophysical properties of anthracene derivatives: Tri(9-anthryl)benzene and tri(9-anthryl)borane
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Linkage-structure dependences of the spectroscopic and photophysical properties of anthracene derivatives: Tri(9-anthryl)benzene and tri(9-anthryl)borane
چکیده انگلیسی

The spectroscopic and photophysical properties of 1,3-di(9-anthryl)benzene (DAB), 1,3,5-tri(9-anthryl)benzene (TAB), and tri(9-anthryl)borane (TABO) in tetrahydrofuran were reported, together with those of 9-phenylanthracene (MAB). Although MAB, DAB, and TAB showed structured absorption spectra similar to the 1La band of anthracene in the wavelength region of 300–400 nm, the molar absorption coefficient at the maximum wavelength of TAB was as large as ∼4.2 as compared with that of MAB. Detailed analysis of the absorption data indicated that the absorption transition moment of MAB, DAB, or TAB was 3.3, 4.3, or 6.4 D, respectively. The large absorption transition moment of TAB was discussed on the basis of the electron density distributions in the highest-energy occupied and lowest-energy unoccupied molecular orbitals. In contrast to TAB, TABO exhibited characteristic broad and structureless absorption and fluorescence spectra. The large differences in the spectroscopic and photophysical properties between TAB and TABO were discussed in terms of the effects of the chemical structure of the terminal unit connecting three anthryl groups.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 207, Issue 1, 5 September 2009, Pages 102–108
نویسندگان
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