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| Type |
Poster Presentation |
| Area |
고분자화학 |
| Room No. |
포스터발표장 |
| Time |
4월 21일 (금요일) 13:00~14:30 |
| Code |
POLY.P-15 |
| Subject |
Synthesis, Characterization, and Photovoltaic Properties of New Two Dimensional Benzodithiophene(BDT)-based Copolymers |
| Authors |
김지영, 이상규1, 신원석1, 강인남*
가톨릭대학교 화학과, Korea
1한국화학연구원 에너지소재연구센터, Korea
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| Abstract |
A new donor-acceptor (D-A) conjugated copolymer based on benzodithiophene (BDT) and thieno[3,4-c]pyrrole-4,6-dione (TPD) was synthesized via a Stille cross-coupling reaction. A highly conjugated thiophene-based side group is incorporated into each BDT unit to generate a two-dimensional (2D) D-A copolymer (P1). As a control, the alkoxy-substituted BDT-based TPD copolymer (P2) was synthesized using the same polymerization method. The polymers were well soluble in common organic solvents, such as chloroform, chlorobenzene, etc. P1 thin films produce two distinct absorption peaks. The shorter wavelength absorption (475 nm) is attributed to the BDT units containing conjugated thiophene-based side groups, and the longer wavelength band (566 nm) is due to the intramolecular charge transfer between the BDT donor and the TPD acceptor. The UV-visible absorption spectrum of P2 in the film state also contains two λmax at and 410 nm, however, the intensity of the shorter wavelength peak is very weak. The highest occupied molecular orbital (HOMO) energy levels of P1 and P2 were calculated to be –5.45 and –5.40 eV, respectively. The LUMO levels of P1 and P2 were calculated to be –3.58 and –3.49 eV, as estimated from the optical band gaps and HOMO energy levels. The organic photovoltaic properties of these polymers will be studied. |
| E-mail |
jokerluv0913@naver.com |
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119th General Meeting of the KCS