کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1267392 972345 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of dendron generation on properties of self-host heteroleptic green light-emitting iridium dendrimers
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of dendron generation on properties of self-host heteroleptic green light-emitting iridium dendrimers
چکیده انگلیسی

A series of self-host heteroleptic green light-emitting iridium (Ir) dendrimers G1 and G2 have been synthesized under mild conditions with high yields, and their photophysical, electrochemical and electroluminescent properties are investigated in detail. Compared with the model compound G0, both G1 and G2 exhibit similar photophysical and electrochemical properties, indicating that the incorporation of carbazole dendrons via a flexible non-conjugated spacer can retain the independence of the emissive Ir core. However, the device performance gradually increases with the increasing dendron generation due to the reduced intermolecular interactions. As a result, a peak luminous efficiency of 17.2 cd/A has been obtained for the G2-based non-doped device, which is about 6 times that of G0. Further dispersing the dendrimer G2 into a host matrix, the efficiency can be improved to 29.2 cd/A.

Figure optionsDownload as PowerPoint slideHighlights
► The properties of Ir dendrimers with different dendron generation are investigated.
► The flexible non-conjugated spacer retains independence of the emissive Ir core.
► The device performance gradually increases with the increasing dendron generation.
► The high luminous efficiency of 17.2 cd/A is obtained for the nondoped device.
► The high luminous efficiency of 29.2 cd/A is obtained for the doped device.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Organic Electronics - Volume 13, Issue 10, October 2012, Pages 2160–2166
نویسندگان
, , , , , ,