کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10670126 | 1008846 | 2012 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Tailoring the optoelectronic properties of donor-acceptor-donor type Ï-conjugated polymers via incorporating different electron-acceptor moieties
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Tailoring the optoelectronic properties of donor-acceptor-donor type Ï-conjugated polymers via incorporating different electron-acceptor moieties Tailoring the optoelectronic properties of donor-acceptor-donor type Ï-conjugated polymers via incorporating different electron-acceptor moieties](/preview/png/10670126.png)
چکیده انگلیسی
The presence of the strong electron-donating ethylenedioxy groups on pendant phenyl rings increased electron density on DBQHT, thus the oxidation potential of DBQHT shifts to a lower value than that of PHEHT. The Ï-Ï* absorption maximum of PPHEHT was about 40Â nm red-shifted compare to that of PDBQHT, which can be attributed to the increase of the effective conjugation and coplanarity of PPHEHT relative to PDBQHT via using phenanthrene fused quinoxaline unit as the acceptor. The electronic band gap of polymer, defined as the onset of the Ï-Ï* transition, is found to be 1.65Â eV for PPHEHT and 1.82Â eV for PDBQHT. Both polymer films showed multi-color electrochromism. PDBQHT can be switched between a red neutral state and a green oxidized state with two intermediate states; purple and brown. PPHEHT also shows multicolored electrochromic behavior with three distinct states: a blue neutral state, a gray intermediate state, and a green oxidized state.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 520, Issue 7, 31 January 2012, Pages 2960-2965
Journal: Thin Solid Films - Volume 520, Issue 7, 31 January 2012, Pages 2960-2965
نویسندگان
Simge Tarkuc, Yasemin Arslan Udum, Levent Toppare,