کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9575250 | 1389395 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polydispersity of the photoluminescence quantum yield in single conjugated polymer chains
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Polydispersity of the photoluminescence quantum yield in single conjugated polymer chains Polydispersity of the photoluminescence quantum yield in single conjugated polymer chains](/preview/png/9575250.png)
چکیده انگلیسی
The conjugated polymer poly(2-methoxy-5-(2â²-ethylhexyloxy)-1,4-phenylene vinylene) (MEH-PPV) was studied by a single-molecule imaging technique. A comparison of statistical distributions of fluorescence intensity with molecular weight distributions revealed that the distribution of the photoluminescence quantum yield of the single polymer chains under study is significantly asymmetric, with a polydispersity â³2. The result implies that there are molecules whose quantum yield is a few times higher than the ensemble quantum yield. This conclusion suggests a possibility of a great improvement of the photoluminescence quantum yield of MEH-PPV, which is known to be several times less than 1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 318, Issue 3, 22 November 2005, Pages 217-222
Journal: Chemical Physics - Volume 318, Issue 3, 22 November 2005, Pages 217-222
نویسندگان
O. Mirzov, I.G. Scheblykin,