کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1309677 975218 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Variation of charge transfer kinetics in structurally closely related dyads with rhenium photosensitizers
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Variation of charge transfer kinetics in structurally closely related dyads with rhenium photosensitizers
چکیده انگلیسی

The kinetics for photoinduced charge separation and thermal charge-recombination processes in three donor–bridge–acceptor molecules with rhenium(I) tricarbonyl diimine photosensitizers were investigated. Time resolved luminescence and transient absorption spectroscopies reveal that in addition to driving force effects, differences in bridge-mediated electronic donor–acceptor coupling among the three dyads play important roles. Notably, it is seen that charge separation depends strongly on whether initial photoexcitation involves promotion of an electron towards or away from a phenothiazine electron donor. Thermal charge recombination rates are found to differ by a factor of 2 between two isomeric dyads due to an electronic coupling effect.

The rates for formation and decay of charge-separated states in a series of structurally closely related donor–bridge–acceptor molecules are found to depend strongly on the exact molecular design.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 362, Issue 10, 1 August 2009, Pages 3415–3420
نویسندگان
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