کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9776343 1509484 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experimental and Computational Studies of Substituted Terthiophene Oligomers as Electroluminescent Materials
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد بیومتریال
پیش نمایش صفحه اول مقاله
Experimental and Computational Studies of Substituted Terthiophene Oligomers as Electroluminescent Materials
چکیده انگلیسی
Density functional calculations at the B3LYP/6-31G(d) level are used to predict the vibrational spectra for a series of substituted thiophenes and terthiophenes containing the emitter unit diethenylbenzene (DEB). The calculations show that cyano substitution induces non-planarity, particularly for the terthiophene compound. This was verified by the absorption and emission data, which suggest that the ground state is less planar than the excited state. The solution phase electronic spectroscopy reveals that some of the compounds are very emissive; however, CN substitution quenches this emission. Electroluminescent devices may be constructed using these emitter materials and it is found that the efficiency of the CNDEB compounds may be improved with the introduction of a different hole transporting layer.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 153, Issues 1–3, 21 September 2005, Pages 225-228
نویسندگان
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