کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1443347 | 988154 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and photophysical properties of multi-branched ethynyl fluorene-labeled molecules
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
بیومتریال
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چکیده انگلیسی
Two kinds of emissive multi-branched molecule based on an ethynyl fluorene were synthesized by cyclotrimerization method. An ethynyl fluorene-labeled three-armed molecule, DBFP was prepared and the other one, CzDBFP has carbazole terminal groups tethered to DBFP. Their absorption and photoluminescent properties were investigated. The spectral analyses indicate that the molecules bearing ethynyl fluorene moieties as a peripheral group can exhibit highly isolated photophysical properties. The multi-branched molecule, CzDBFP was mixed with 2-{2-[2-(4-diethylamino-phenyl)-vinyl]-6-methyl-pyran-4-ylidene}-malononitrile (DCM1) with an optimum concentration. At the low concentration (0.3Â wt%) of DCM1, white emission was observed by incomplete energy transfer process from an excited CzDBFP. At the high concentration (3.0Â wt%), red emission was predominantly observed, which was attributed to an efficient Förster energy transfer process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Synthetic Metals - Volume 157, Issue 24, December 2007, Pages 1034-1039
Journal: Synthetic Metals - Volume 157, Issue 24, December 2007, Pages 1034-1039
نویسندگان
Hu Xiaodan, Hong Suk Kim, Min Ju Cho, Jung-Il Jin, Young Min Kim, Young Wook Park, Byeong-Kwon Ju, Dong Hoon Choi,