کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5377022 | 1389377 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ground state isomerism and dual emission of the β-carboline anhydrobase (N2-methyl-9H-pyrido[3,4-b]indole) in aprotic solvents
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Ground state isomerism and dual emission of the β-carboline anhydrobase (N2-methyl-9H-pyrido[3,4-b]indole) in aprotic solvents Ground state isomerism and dual emission of the β-carboline anhydrobase (N2-methyl-9H-pyrido[3,4-b]indole) in aprotic solvents](/preview/png/5377022.png)
چکیده انگلیسی
The spectral and photophysical properties of the betacarboline anhydrobase, N2-methyl-9H-pyrido[3,4-b]indole, BCA, have been studied in aprotic solvents. The influence of solvent polarity and hydrogen-bonding interactions on the absorption, steady-state and time-resolved fluorescence spectra provides founded proofs on the existence of two ground state BCA isomers whose equilibrium concentrations change with the medium polarity. We propose that the isomers possess quinonoid, Q, and dipolar zwitterionic, Z, structures, respectively. Upon excitation, each isomer gives rise to a double emission. To account for this phenomenon, photophysical diagrams based on the simultaneous emission from locally excited states, LE, and charge transfer excited states, CT, are proposed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 327, Issue 1, 21 August 2006, Pages 70-76
Journal: Chemical Physics - Volume 327, Issue 1, 21 August 2006, Pages 70-76
نویسندگان
A. Sánchez Coronilla, C. Carmona, M.A. Muñoz, M. Balón,