- Novel photovoltaic polymers constructed from alternative donor and acceptor units having one mother structure
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This work presents a new strategy for the preparation of donor-acceptor conjugated copolymers, in which both donor and acceptor units derive from one mother structure. Benzo[1,2-b:4,5-b′]dithiophene-4,8-dione (BQDT) is an electron-deficient unit. From BQDT, benzo[1,2-b:4,5-b′]dithiophene (BDT) and benzo[1,2-b:4,5-b′]dithiophene-4,8-dione dioxime (BXDT) can be easily derived and serve as electron-donating and another electron-accepting unit, respectively. Based on these three units, poly(BDT-alt-BQDT) (PBQ-C24, with 2-decyltetradecyl side chains) and poly(BDT-alt-BXDT) (PBX-C8, with 2-ethylhexyl side chains) have been designed and synthesized. Their thermal, optical and electrochemical properties have been investigated. PBQ-C24 has a broad absorption spectrum in the range of 300-700 nm, while PBX-C8 can only harvest the light from 300 to 600 nm. However, the bulk heterojunction cell based on the blend of PBX-C8 and [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) displays a better performance with a power conversion efficiency of 0.51%.
- Liang, Long,Wang, Jin-Tu,Mei, Chong-Yu,Li, Wei-Shi
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- High-efficiency synthetic method of 2,6-dibromobenzo[1,2-B:4,5-B]dithiophenol-4,8-diketone
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The invention discloses a high-efficiency synthetic method of 2,6-dibromobenzo[1,2-B:4,5-B]dithiophenol-4,8-diketone. The high-efficiency synthetic method comprises the following steps: (1) synthesizing benzo[1,2-B:4,5-B]dithiolphenol-4,8-diketone; and (2) performing bromination reaction for the benzo[1,2-B:4,5-B]dithiolphenol-4,8-diketone. By adopting the high-efficiency synthetic method of 2,6-dibromobenzo[1,2-B:4,5-B]dithiophenol-4,8-diketone, the yield of the product 2,6-dibromobenzo[1,2-B:4,5-B]dithiophenol-4,8-diketone is greatly increased, and the requirement on the atom economy can be realized.
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Paragraph 0022; 0023; 0027; 0028; 0029; 0037; 0045; 0053
(2017/07/20)
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- QUINONE DERIVATIVES AND ORGANIC LIGHT EMITTING DIODE DEVICE COMPRISING THE SAME
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The present invention relates to a quinone derivative and an organic electroluminescent diode including the same. According to an embodiment of the present invention, the quinone derivative is denoted by chemical formula 1.COPYRIGHT KIPO 2015
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Paragraph 0105; 0106; 0107
(2016/12/01)
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- SUBSTITUTED BENZODITHIOPHENES AND BENZODISELENOPHENES
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The invention relates to alkynyl substituted benzodithiophenes and benzodiselenophenes, their use especially as semiconductors or charge transport materials in optical, electro-optical or electronic devices and to such devices comprising these materials.
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Page/Page column 53-54
(2010/11/30)
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