کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5180794 1380944 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and optical properties of poly(tetramethylsilarylenesiloxane) derivative bearing diphenylcyclopentadithiophene moiety
ترجمه فارسی عنوان
سنتز و خواص نوری پلی متیل (تترامتیلیک سیلارییلن سیلکسان) مشتق دیفنیل سیکلوپنتادیوتیوفن
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی


- Poly(tetramethylsilarylenesiloxane) derivative bearing diphenylcyclopentadithiophene moiety was prepared.
- The obtained polymer would be a new heat-resistant polymer with good optical properties.
- The cooperative effects of diphenyl groups with dimethylsilyl moieties improved the fluorescence quantum yield.

The thermal and optical properties of a novel diphenylcyclopentadithiophene-based poly(tetramethylsilarylenesiloxane) derivative (P1), which was prepared via polycondensation of a novel disilanol monomer, i.e., 2,6-bis(dimethylhydroxysilyl)-4,4-diphenylcyclopentadithiophene (M1), were investigated. P1 exhibited good solubility in common organic solvents, such as benzene, toluene, chloroform, dichloromethane and THF at ambient temperature. The glass transition temperature (Tg) of P1 was determined by differential scanning calorimetry to be 109 °C. No melting temperature (Tm) of P1 was observed, indicating the obtained P1 was an amorphous polymer. The temperature at 5% weight loss (Td5) of P1 was 454 °C, indicating the rather good thermostability of P1. Bathochromic and hyperchromic effects were observed in the absorption and fluorescence spectra by introducing dimethylsilyl substituents onto 4,4-diphenylcyclopentadithiophene skeleton. The fluorescence quantum yields (ΦFs) of M1 and P1 in chloroform were determined to be 0.36 and 0.39, respectively. It was revealed that M1 and P1 exhibited the higher fluorescence intensity than diphenylcyclopentadithiophene owing to the cooperative effects of the introduction of diphenyl groups onto spiro carbon of cyclopentadithiophene as well as dimethylsilyl moieties onto 2- and 6-position of cyclopentadithiophene skeleton.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 55, Issue 26, 15 December 2014, Pages 6672-6679
نویسندگان
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