کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5375719 | 1504306 | 2008 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The J- and H-bands of dye aggregate spectra: Analysis of the coherent exciton scattering (CES) approximation
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
The validity of the CES approximation is investigated by comparison with direct diagonalisation of a model vibronic Hamiltonian of N identical monomers interacting electronically. Even for quite short aggregates (Nâ³6) the CES approximation is shown to give results in agreement with direct diagonalisation, for all coupling strengths, except that of intermediate positive coupling (the H-band region). However, previously excellent agreement of CES calculations and measured spectra in the H-band region was obtained [A. Eisfeld, J.S. Briggs, Chem. Phys. 324 (2006) 376]. This is shown to arise from use of the measured monomer spectrum which includes implicitly dissipative effects not present in the model calculation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 352, Issues 1â3, 3 September 2008, Pages 258-266
Journal: Chemical Physics - Volume 352, Issues 1â3, 3 September 2008, Pages 258-266
نویسندگان
J. Roden, A. Eisfeld, J.S. Briggs,