کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
177133 458966 2011 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Light-emitting dyes derived from bifunctional chromophores of diarylamine and oxadiazole: Synthesis, crystal structure, photophysics and electroluminescence
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Light-emitting dyes derived from bifunctional chromophores of diarylamine and oxadiazole: Synthesis, crystal structure, photophysics and electroluminescence
چکیده انگلیسی

The synthesis, structural, photophysical, electrochemical and electroluminescent properties of a novel class of bifunctional molecule are reported in which the hole-transporting triarylamine and electron-transporting oxadiazole components were combined. The strongly luminescent compounds displayed good thermal and morphological stability as well as intense fluorescence both in solution and thin film at room temperature. The effects of the introduction of substituents with different electronic properties upon their absorption and emissive characteristics were correlated with theoretical calculations using density functional theory computations. The photophysics and electrochemistry of such systems were compared to those for the corresponding molecule without an oxadiazole ring. The bipolar compounds could be vacuum-sublimed and applied as emissive dopants for the fabrication of electrofluorescent, organic light-emitting devices with relatively simpler device structures, which can emit tunable colors by varying the aryl ring substituents.

A series of bifunctional compounds consisting of hole-transporting triarylamine and electron-transporting oxadiazole components are reported. These sublimable dyes have high solution quantum efficiencies and their emission wavelengths are tunable using different substituents on the aryl ring of triphenylamine. They are suitable for the fabrication of simple OLED devices. Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 88, Issue 3, March 2011, Pages 333–343
نویسندگان
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