کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5191674 1381237 2005 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photophysical study of a conjugated-non-conjugated PPV-type electroluminescent copolymer
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Photophysical study of a conjugated-non-conjugated PPV-type electroluminescent copolymer
چکیده انگلیسی

This paper reports the photo- and electroluminescence studies of emitting species of one of the first reported blue emitters, the conjugated-non-conjugated multi-block copolymer, poly[1,8-octanedioxy-2,6-dimethoxy-1,4-phenylene-1,2-ethenylene-1,4-phenylene-1,2-ethenylene-3,5-dimethoxy-1,4-phenylene]. Because the conjugation length of the emissive center is very well defined (two and half phenylene-vinylene units) the differences found between the fluorescence profile of the fluorophore in solution, at several concentrations and that in the solid state allowed us to conclude that in solid the emission comes from associated forms, such as ground-state dimers and/or excimers. Time-resolved fluorescence in a nanosecond time scale recorded at ϖem=24,096 cm−1 showed a monoexponential decay of 1.5 ns, which is compatible with rigid forms of stilbene derivatives.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 46, Issue 8, 29 March 2005, Pages 2452-2460
نویسندگان
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