کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5390142 1505155 2006 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Spontaneous switching of permanent dipoles in single conjugated polymer molecules
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Spontaneous switching of permanent dipoles in single conjugated polymer molecules
چکیده انگلیسی
Electric fields applied in low temperature single molecule spectroscopy of conjugated polymers open a direct window to the microscopic charge distribution within the individual molecule. We typically observe a linear Stark effect, characteristic of either an internal electric field within the molecule or a difference in polarisation of ground and excited state. Here, we report evidence for spontaneous switching of the permanent dipole responsible for the shift in emission with field in a ladder-type polymer. This switching most likely results from photoinduced radical formation and annihilation and can be linked to blinking in single molecules and nanocrystal quantum dots.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics Letters - Volume 428, Issues 4–6, 20 September 2006, Pages 405-410
نویسندگان
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