کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5435591 | 1509356 | 2016 | 9 صفحه PDF | دانلود رایگان |
- Synthesis of new organic semi conducting polymers containing isosorbide pendant polar and chiral group.
- Semi-conducting polymers.
- Chromophore effect on optical and electrical properties.
- Improved of PL quantum yield.
Tow isosorbide containing poly(phenylene vinylene-arylene vinylene)s have been synthesized via Wittig polycondensation: PPVIs-Carb (arylene: carbazole) and PPVIs-Naph (arylene: naphtalene). The macromolecular structures were characterized by NMR and FTIR spectroscopies. The polymers are soluble in common organic solvents and show good film-forming abilities thanks to the presence of the polar isosorbide side groups. These organic materials showed an amorphous behavior. A higher polarity of the surface was obtained for PPVIs-Naph. The both polymer films are photoluminescent and exhibit an optical gap of 2.3Â eV. The carbazole-based polymer emits in yellow-green while a green-yellow emission was obtained in the naphtalene conatainig polymer with higher fluorescence quantum efficiency. The HOMO/LUMO energy levels were determined by cyclic voltammetry and showed higher ionization potential and electronic affinity for PPVIs-Carb. The study of the ITO/polymer thin film/Al devices showed a space-charge limited current transport mechanism with charge carrier mobility in order of 10â8Â cm2Â Vâ1Â sâ1.
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Journal: Synthetic Metals - Volume 221, November 2016, Pages 227-235