کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
175801 458921 2015 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structure–property relationships of star-shaped blue-emitting charge-transporting 1,3,5-triphenylbenzene derivatives
ترجمه فارسی عنوان
ساختار ارتباطات مالکیت ستاره ای شکل آبی رنگ مشتقات مشتق 1،3،5-تری فنیل بنزن
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Three new blue-emitting derivatives of 1,3,5-triphenylbenzene were synthsized.
• Chromophores in the synthesized compounds are connected via different linkages.
• The highest fluorescence quantum yield was shown by compound with ethenyl-bridge.
• Hole mobility of the layers reached 2.4 × 10−3 cm/Vs at high electric fields.

Three star-shaped derivatives of 1,3,5-triphenylbenzene bonded to fluorene moieties with various linking groups were designed and synthesized. The three dendritic compounds are characterized by high values of decomposition temperature (up to 434 °C) and form glasses with glass transition temperatures ranging from 55 to 75 °C. The star-shaped compounds emit light in the deep blue region (385–412 nm) and their solutions exhibit moderately high fluorescence quantum yields in the range of 0.40–0.54. The obtained molecules show relatively small values of the optical gaps ranging from 2.50 to 3.08 eV. The layers of the compounds exhibit hole mobility values in the range of 4.9·10−4–2.4·10−3 cm2/V s at electric field 1·105 V/cm. A comparative study of the experimentally estimated and theoretically calculated (DFT method) characteristics of the 1,3,5-triphenylbenzene showed that the geometry, optical and electrochemical properties of the star-shaped molecules depend on the degree of conjugation and the nature of the linking bridge.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Dyes and Pigments - Volume 117, June 2015, Pages 122–132
نویسندگان
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