کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5375088 1504285 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Stark absorption spectroscopy of peridinin and allene-modified analogues
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Stark absorption spectroscopy of peridinin and allene-modified analogues
چکیده انگلیسی
Stark absorption spectra of peridinin (Per) and five allene-modified analogues and their angular dependence as a function of an externally applied electric field were measured in methyl methacrylate polymer at 77 K. In all cases, the energetically lowest absorption band has a significant change of static dipole-moment upon photoexcitation (Δμ). In particular, Per has the largest value of |Δμ|. The angles between Δμ and the transition dipole-moment of all the analogues were determined. It is suggested that the allene group in Per plays a key role as the electron donor in the charge transfer process following photoexcitation. The results of MNDO-PSDCI calculations support this idea.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 373, Issues 1–2, 19 July 2010, Pages 71-79
نویسندگان
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