کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1442417 | 1509441 | 2010 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polyethers containing 2-phenylindol-1-yl moieties as host materials for light emitting diodes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Oxetane monomers and polyethers containing electroactive 2-phenylindol-1-yl or 3-(2-phenylindol-1-yl)carbazol-9-yl fragments were synthesized and characterized by NMR spectroscopy and elemental analysis. The polymers represent amorphous materials of high thermal stability with glass transition temperatures of 94-179 °C and thermal decomposition starting at temperatures above 400 °C. The electron photoemission spectra of layers of the synthesized polymers showed ionization potentials of 5.7-5.8 eV. The polymers were tested as host materials in phosphorescent OLEDs with iridium(III)[bis(4,6-difluorophenyl)-pyridinato-N,C2â²]picolinate as the guest. The device based on polymer containing 2-phenylindol-1-yl fragments exhibited the best overall performance with a driving voltage of 5.9 V, maximum power efficiency of 8.46 lm/W and maximum brightness of 718 cd/m2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 160, Issues 15â16, August 2010, Pages 1793-1796
Journal: Synthetic Metals - Volume 160, Issues 15â16, August 2010, Pages 1793-1796
نویسندگان
S. Lengvinaite, J.V. Grazulevicius, S. Grigalevicius, Y.M. Lai, W.B. Wang, J.H. Jou,