کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1442944 988137 2007 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fluorescence study of intrachain and interchain ultrafast processes in domain-structured polythiophene
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Fluorescence study of intrachain and interchain ultrafast processes in domain-structured polythiophene
چکیده انگلیسی
Exciton dynamics of poly(3-dodecylthiophene) were studied by steady state and femtosecond time-resolved fluorescence spectroscopy. Comparing the solution and solid-state results intrachain and interchain exciton transfer processes were distinguished. The steady-state spectra revealed extra nonradiative relaxation channel in solid state and excitation wavelength-dependent fluorescence, suggesting non-trivial energy level structure. According to the observed wavelength dependent spectral splitting phenomena a domain model of the poly(3-dodecylthiophene) solid structure were suggested. The time-resolved results confirmed the domain concept unveiling two spectral areas with different fluorescence character. Moreover, the time-resolved study was able to differentiate between two poly(3-dodecylthiophene) samples with small change (13%) of their regioregularity. The obtained results are a demonstration of usefulness of fluorescence spectroscopy to analyze the interchain polymer structure in solid state.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 157, Issue 21, October 2007, Pages 834-840
نویسندگان
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