- Selenophene-Based Heteroacenes: Synthesis, Structures, and Physicochemical Behaviors
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On the basis of three new building blocks, dithieno[3,2-b:2′,3′-d]selenophene (tt-DTS), diseleno[3,2-b:2′,3′-d]thiophene (tt-DST), and diseleno[3,2-b:2′,3′-d]selenophene (tt-DSS), four thiophene- and selenophene-based heteroacenes (3a-d) with up to seven
- Xu, Wan,Wang, Mengjie,Ma, Zhiying,Shan, Zhen,Li, Chunli,Wang, Hua
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- Benzotrithiophene-based donor-acceptor copolymers with distinct supramolecular organizations
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Two donor-acceptor copolymers, P1 and P2, containing the novel donor component benzo[2,1-b:3,4-b':5,6-c″]trithiophene were synthesized. Both polymers show small π-stacking distances (0.35 nm for P1 and 0.37 nm for P2) due to the use of the disklike-shaped donor unit. However, they exhibit remarkable differences in supramolecular organization, film microstructure, and transistor performance. Indeed, P1 reveals a distinct supramolecular organization in the bulk in comparison to conventional conjugated polymers, including P2. Interestingly, no charge carrier transport was observed for P1 in field-effect transistors, while P2 exhibited a hole mobility of up to 0.04 cm2 V-1 s-1. This variation in device behavior is attributed to the evidently different degree of curvature in the polymer backbone induced by the introduction of two additional thiophene units in P2.
- Guo, Xin,Puniredd, Sreenivasa Reddy,Baumgarten, Martin,Pisula, Wojciech,Muellen, Klaus
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- A highly hindered bithiophene-functionalized dispiro-oxepine derivative as an efficient hole transporting material for perovskite solar cells
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Dimethoxydiphenylamine-substituted dispiro-oxepine derivative 2,2′,7,7′-tetrakis-(N,N′-di-4-methoxyphenylamine)dispiro-[fluorene-9,4′-dithieno[3,2-c:2′,3′-e]oxepine-6′,9′′-fluorene] (DDOF) has been designed and synthesized using a facile synthetic route. The novel hole transporting material (HTM) was fully characterized and tested in perovskite solar cells exhibiting a remarkable power conversion efficiency of 19.4%. More importantly, compared with spiro-OMeTAD-based devices, DDOF shows significantly improved stability. The comparatively comprehensive solid structure study is attempted to disclose the common features of good performance HTMs. These achievements clearly demonstrated that the highly hindered DDOF can be an effective HTM for the fabrication of efficient perovskite solar cells and further enlightened the rule of new HTM's design.
- Rakstys, Kasparas,Paek, Sanghyun,Sohail, Muhammad,Gao, Peng,Cho, Kyung Taek,Gratia, Paul,Lee, Yonghui,Dahmen, Klaus H.,Nazeeruddin, Mohammad Khaja
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- Dialkylthienosilole and N-alkyldithienopyrrole-based copolymers: Synthesis, characterization, and photophysical study
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We synthesized and characterized a set of D-π-A conjugated copolymers containing thiophene π-bridge. While benzothiadiazole serves as an acceptor (A) unit, the 4,4-dialkyldithieno[3,2-b:2′,3′-d]silole (DTSi) or N-alkyldithieno[3,2-b:2′,3′-d]pyrrole (DTP) act as a donor (D) unit. The copolymers were synthesized via the commonly Stille cross-coupling reaction and exhibited molecular weights of 18.6 to 31.3 kg/mol. The main structural differences among the copolymers are the type of donor moiety (DTSi or DTP) and the position of hexyl side chains on the thiophene π-bridge units between the D and A moieties. The ultimate goal of this work is to explore the effect of three structural factors that could control the photophysical properties of polymers in order to help in the rational design of polymers having specific properties used in optoelectronic devices. The physical properties include thermal stability, photophysical, and electrochemical properties. The structural factors are (a) the power of donor moiety, (b) the position of alkyl side chain on the thiophene π-bridge, and (c) the nature of the alkyl side chain. Also, we utilized the density functional theory calculations to calculate the geometric and electronic structures. A good agreement was remarked between the experimental and theoretical findings.
- El-Shehawy, Ashraf A.,Abdo, Nabiha I.,El-Hendawy, Morad M.,Abdallah, Abdul-Rahman I.A.,Lee, Jae-Suk
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- Oligomeric Perylene Diimide Non-Fullerene Acceptors via Direct (Hetero)Arylation Cross-Coupling Reactions
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Oligomeric compounds useful as organic conjugated materials in electronic devices. Oligomeric compounds contain three or more or four or more of certain PDI units bonded to an organic core. The organic core contains one, two or more thiophene rings. The organic core can contain two or more thiophene rings separated by a linker group; two or more thiophene rings directly fused to each other or indirectly fused to each other through an optionally substituted aromatic or non-aromatic carbocylic ring system or an optionally substituted aromatic heterocyclic or non-aromatic heterocyclic ring system; or each of two or more thiophene rings is fused to an aromatic or non-aromatic carbocylic ring system or an aromatic heterocyclic or non-aromatic heterocyclic ring system and the resulting fused rings containing a thiophene ring are each separated by a linker group M. Methods for making oligomeric compounds by direct heteroarylation are provided.
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Paragraph 0190-0191
(2020/04/09)
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- Optoelectronic Properties of A-π-D-π-A Thiophene-Based Materials with a Dithienosilole Core: An Experimental and Theoretical Study
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Two A-π-D-π-A thiophene-based small molecules with a central dithienosilole core and dicyanovinyl (DCV) end groups were synthesized. These compounds differ only by the presence of alkyl and alkylsulfanyl chains, respectively, on the thiophene beta positions. Computational data together with the spectroscopic and electrochemical findings (obtained by means of absorption, steady-state/time-resolved emission techniques, and cyclic voltammetry) revealed that both molecules possess low electronic and optical band gaps, broad absorption spectra, and good stability both in p and n-doping states, which make them suitable for optoelectronic applications. In both compounds, the HOMO–LUMO transition involves an intramolecular charge transfer from the electron-donor dithienosilole unit to the two terminal electron-acceptor DCV groups. A marked positive emission solvatochromism was observed for both molecules and was interpreted on the basis of the symmetry breaking in the S1 excited state. The two synthesized compounds were also compared to their shorter precursors and to similar oligothiophenes to understand how the nature of the building block influences the characteristics of the final materials. Furthermore, it was possible to better understand the contribution of the sulfur atom in modulating the optical properties of the small molecules studied.
- Caselli, Monica,Vanossi, Davide,Buffagni, Mirko,Imperato, Manuel,Pigani, Laura,Mucci, Adele,Parenti, Francesca
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p. 1314 - 1323
(2019/05/15)
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- FUSED RING DERIVATIVE AND ORGANIC SOLAR CELL COMPRISING THE SAME
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The present invention relates to a condensed cyclic derivative represented by chemical formula 1, and an organic solar cell containing the same. According to an embodiment of the present invention, the condensed cyclic derivative exhibits excellent coating properties by having a hydroxyl group, an alkyl group, an alkoxy group, and a sulfide group as a substituent.COPYRIGHT KIPO 2017
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Paragraph 0227; 0228
(2017/08/02)
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- [...] compounds (by machine translation)
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[Problem] self-assembly to form an integrated spiral, circular polarized light emitting [...] shown compound. (1) a compound represented by the formula [a] [...]. (R1 And R2 Both or either one of the substrate having asymmetric centers; R4 OR is hydrogen or3 )Figure 1 [drawing] (by machine translation)
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- Synthesis and photophysical properties of semiconductor molecules D1-A-D2-A-D1-type structure based on derivatives of quinoxaline and dithienosilole for organics solar cells
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A novel small molecule with D1-A-D2-A-D1 structure denoted as DTS(QxHT2)2 based on quinoxaline acceptor and dithienosilone donor units was synthesized and its optical and electrochemical properties were investigated. The thin film of DTS(QxHT2)2 showed a broad absorption profile covering the solar spectrum from 350?nm to 780?nm with an optical bandgap of 1.63?eV. The energy levels estimated from the cyclic voltammetry indicate that this small molecule is suitable as donor along with PC71BM as acceptor for the fabrication solution processed bulk heterojunction solar cells for efficient exciton dissociation and high open circuit voltage. The organic solar cells based on optimized DTS(QxHT2)2:PC71BM active layers processed with chloroform and DIO/CF showed overall power conversion efficiency of 3.16% and 6.30%, respectively. The higher power conversion efficiency of the solar cell based on the DIO/CF processed active layer is attributed to enhanced short circuit photocurrent and fill factor may be related to better phase separation between donor and acceptor in the active layer and more balanced charge transport, induced by the solvent additive. The power conversion efficiency of the organic solar cell was further improved up to 7.81% based on active layer processed with solvent additive, using CuSCN as hole transport layer instead of PEDOT:PSS and mainly attributed to increased fill factor and open circuit voltage due the formation of better Ohmic contact between the active layer and the CuSCN layer.
- Keshtov,Godovsky, D. Yu,Kuklin,Nicolaev,Lee,Lim,Lee,Koukaras,Sharma, Ganesh D.
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p. 361 - 370
(2016/11/09)
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- CONJUGATED POLYMERS FOR ELECTRONIC DEVICES
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A conjugated polymer for electronic devices can include a repeated unit having the structure of formula (I)
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(2015/02/19)
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- organic semiconductor compound, manufacturing method thereof, and organic electronic device that contains it
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The present invention relates to an organic semiconductor compound, a method for manufacturing the same, and an organic electronic device comprising the same and, more specifically, to an organic semiconductor compound including quinoxaline, a method for manufacturing the same, and an organic electronic device comprising the same. In addition, by having a low band gap by synthesizing and copolymerizing a thiophene derivative containing sulfur (S) with a quinoxaline-based compound, the organic electronic device comprising the same has a higher efficiency with an innovative combination with a fullerene derivative, which is a photoactive layer, with the organic semiconductor compound of the present invention. The organic semiconductor compound of the present invention has high thermal stability and high solubility and the organic electronic device comprising the same has excellent electric characteristics, thereby can be valuably used as a n-type material of the organic electronic device, especially an organic solar cell or an organic thin film transistor.
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- The effect of heteroatom conformation on optoelectronic properties of cyclopentadithiophene derivatives
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Cyclopentadithiophene (CPDT) derivatives with different heteroatom conformations have been synthesized. The optical, electrochemical and charge transport properties of these molecules are reported. The CPDT-anti-ketone not only exhibits the lowest optical and electronic bandgaps, but also exhibits reasonable hole mobility, 3 × 10-3 cm2 (V s) -1. Changing the carbonyl conformation to the syn position or incorporating the imine functionality results in a blue-shift in the lower energy band of the absorption spectrum indicative of the increased bandgaps. the Partner Organisations 2014.
- Wanwong, Sompit,Poe, Ambata,Balaji, Ganapathy,Thayumanavan
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p. 2474 - 2478
(2014/04/03)
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- COUPLED HETEROARYL COMPOUNDS VIA REARRANGEMENT OF HALOGENATED HETEROAROMATICS FOLLOWED BY OXIDATIVE COUPLING (COUPLED TRICYCLIC CORE COMPOUNDS)
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The inventions disclosed and described herein relate to new and efficient generic methods for making a wide variety of compounds having HAr - Z - Har tricyclic cores (II) from intermediates (I), wherein HAr is an optionally substituted five or six membered heteroaryl ring, and Hal is a halogen, and Z is a bridging radical, such as S, Sc, NRS, C(O), C(O)C(O), Si(R5)2, SO, S02, PRS, BRS, C(R5)2 or P(O)R5 and both HAr are covalently bound to one another. The synthetic methods employ a "Base-Catalyzed Halogen Dance" reaction to prepare a metallated compound comprising a five or six membered heteroaryl ring comprising a halogen atom, and then oxidatively coupling the reactive intermediate compound. The compounds of Formula (II) and/or oligomer or polymers comprising repeat units having Formula (IT) can be useful for making semi-conducting materials, and/or electronic devices comprising those materials. Acyl compounds can be prepared. Heteroary- lene substituents can be used. The core tricyclic core can be coupled to itself. The Z group also can be strong electron-withdrawing groups such as C=C(CN)2 or [C=C(CN)2]2. Organic electronic devices can be made including field-effect transistors. (Formula I, II)
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(2013/03/26)
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- COUPLED HETEROARYL COMPOUNDS VIA REARRANGEMENT OF HALOGENATED HETEROAROMATICS FOLLOWED BY OXIDATIVE COUPLING (HETEROARYLENE SPACER MOIETY)
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The inventions disclosed and described herein relate to new and efficient generic methods for making a wide variety of compounds having HAr - Z - Har tricyclic cores, wherein HAr is an optionally substituted five or six membered heteroaryl ring, and Hal is a halogen, and Z is a bridging radical, such as S, Sc, NR5, C(O), C(O)C(O), Si(R5)2, SO, S02, PR5, BR5, C(R5)2 or P(O)Rs and both HAr are covalently bound to one another. The synthetic methods employ a "Base-Catalyzed Halogen Dance" reaction to prepare a metallated compound comprising a five or six membered heteroaryl ring comprising a halogen atom, and then oxidatively coupling the reactive intermediate compound. The compounds of Formula (II) and/or oligomer or polymers comprising repeat units having Formula (II) can be useful for making semi-conducting materials, and/or electronic devices comprising those materials. Acyl compounds can be prepared. Heteroarylene substituents can be used. The core tricyclic core can be coupled to itself. The Z group also can be strong electron-withdrawing groups such as C=C(CN)2 or [C=C(CN)212. Organic electronic devices can be made including field-effect transistors. Formula (II).
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(2013/03/26)
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- COUPLED HETEROARYL COMPOUNDS VIA REARRANGEMENT OF HALOGENATED HETEROAROMATICS FOLLOWED BY OXIDATIVE COUPLING (ACYL MOIETIES)
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The inventions disclosed and described herein relate to new and efficient generic methods for making a wide variety of compounds having HAr - Z - Har tricyclic cores, wherein HAr is an optionally substituted five or six membered heteroaryl ring, and Hal is a halogen, and Z is a bridging radical, such as S, Se, NR5, C(O), C(O)C(O), Si(R5)2, SO, SO2, PR5, BR5, C(R5)2 or P(O)R5 and both HAr are covalently bound to one another. The synthetic methods employ a "Base-Catalyzed Halogen Dance" reaction to prepare a metallated compound comprising a five or six membered heteroaryl ring comprising a halogen atom, and then oxidatively coupling the reactive intermediate compound. The compounds of Formula (II) and/or oligomer or polymers comprising repeat units having Formula (II) can be useful for making semi-conducting materials, and/or electronic devices comprising those materials. Acyl compounds can be prepared. Heteroarylene substituents can be used. The tricyclic core can be coupled to itself. The Z group also can be strong electron-withdrawing groups such as C=C(CN)2 or [C=C(CN)2]2. Organic electronic devices can be made including field-effect transistors.
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(2013/03/26)
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- COUPLED HETEROARYL COMPOUNDS VIA REARRANGEMENT OF HALOGENATED HETEROAROMATICS FOLLOWED BY OXIDATIVE COUPLING (ELECTRON WITHDRAWING GROUPS)
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The inventions disclosed and described herein relate to new and efficient generic methods for making a wide variety of compounds having HAr - Z - Har tricyclic cores, wherein HAr is an optionally substituted five or six membered heteroaryl ring, and Hal is a halogen, and Z is a bridging radical, such as S, Sc, NR5, C(O), C(O)C(O), Si(R5)2, SO, SO2, PR5, BR5, C(R5)2 or P(O)R5 and both HAr are covalently bound to one another. The synthetic methods employ a "Base-Catalyzed Halogen Dance" reaction to prepare a metallated compound comprising a five or six membered heteroaryl ring comprising a halogen atom, and then oxidatively coupling the reactive intermediate compound. The compounds of Formula (II) and/or oligomer or polymers comprising repeat units having Formula (II) can be useful for making semi-conducting materials, and/or electronic devices comprising those materials. Acyl compounds can be prepared. Heteroarylene substituents can be used. The core tricyclic core can be coupled to itself. The Z group also can be strong electron-withdrawing groups such as C=C(CN)2 or [C=C(CN)2]2. Organic electronic devices can be made including field-effect transistors. Formula (II).
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(2013/03/26)
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- Synthesis and photovoltaic applications of a 4,4′- spirobi[cyclopenta[2,1-b;3,4-b′]dithiophene]-bridged donor/acceptor dye
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A new donor/acceptor (D-A) spiro dye (SCPDT1) featuring two bithiophene units, connected through an sp3-hybridized carbon atom, was prepared by a multistep synthetic sequence involving the convenient assembly of the spiro system under mild catalytic conditions. The photocurrent spectrum of dye-sensitized solar cells incorporating SCPDT1 covers the spectral region ranging from 350 to 700 nm and reaches a wide maximum of ~80% in the 420-560 nm range. Power conversion efficiencies of up to 6.02% were obtained.
- Pozzi, Gianluca,Orlandi, Simonetta,Cavazzini, Marco,Minudri, Daniela,Macor, Lorena,Otero, Luis,Fungo, Fernando
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p. 4642 - 4645
(2013/10/08)
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- Substituted oligo- or polythiophenes
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A process for the preparation of a substituted 2,2′-dithiophene is described, which process comprises the steps (a), (c) and optional steps (b) and (d): a reaction of a compound of the formula: with a suitable lithium organic compound, preferably Li-alkyl or Li-alkylamide; b) optional exchange of lithium against another metal selected from Mg1 Zn and Cu; c) reaction of the metallated intermediate obtained in step (a) or (b) with a suitable electrophil, which is CO2 or an aldehyde (addition reaction), or a compound Y′—R17 or Y′—R18-Z (substitution reaction), where R17 and R18 are as defined in claim 1; and optionally d) modification of the product obtained in step (c), e.g. by introducing one or more conjugating moieties Y ring closure between suitable monovalent residues R17, exchange or extension of functional groups or substituents such as addition to carbonyl or substitution of carbonyl in R17 or R18. The products, including or corresponding polymers, are excellent conducting materials
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(2013/05/09)
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- Synthesis and characterization of conjugated low band-gap terpolymers incorporating carbazole for photovoltaic application
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A series of photoactive conjugated low band-gap copolymer (CPSB) and terpolyemrs (TPSBCz-n, n = 1 to 4) based on N-alkyl carbazole, 4,4'-dialkyl dithienosilole, and bezothiadiazole were synthesized. The copolymer and terpolymers were built with the fraction of the carbazole unit varied for 0, 2.5, 5, 10 and 25 mol%. Among the mixtures, the composition of 25 wt% of terpolymer bearing 10 mol.% of the carbazole unit, TPSBCz-3, and 75 wt% of C71-PCBM found a power conversion efficiency of 0.86% with a open-circuit voltage of 0.59 V, the short-circuit current of 4.85 mA and fill factor of 0.30 under AM 1.5 spectral illumination. Our findings suggest that terpolymer bearing low concentration of carbazole lead to a high power conversion efficiency with improved the short-circuit current due to hole mobility enhancement effect of carbazole unit. Copyright
- Kim, Ki-Won,Na, Hyungjun,So, Won-Wook,Yoon, Sung Cheol,Shin, Won Suk
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p. 4279 - 4283
(2012/09/22)
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- Efficient synthesis of benzo[1,2- b:6,5- b']dithiophene-4,5-dione (BDTD) and its chemical transformations into precursors for π-conjugated materials
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A straightforward synthesis of the fused-aromatic dione benzo[1,2-b:6,5-b']dithiophene-4,5-dione (BDTD) has been developed. This fused-aromatic dione was subjected to various chemical transformations to generate diverse molecules with potential use in π-conjugated materials for organic electronics.
- Arroyave, Frank A.,Richard, Coralie A.,Reynolds, John R.
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p. 6138 - 6141
(2013/02/23)
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- METHOD OF MAKING COUPLED HETEROARYL COMPOUNDS VIA REARRANGEMENT OF HALOGENATED HETEROAROMATICS FOLLOWED BY OXIDATIVE COUPLING
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The inventions disclosed and described herein relate to new and efficient generic methods for making a wide variety of compounds having Formulas (I) and (II) as shown below (Formulas (I) and (II)) wherein HAr is an optionally substituted five or six membered heteroaryl ring, and Hal is a halogen, and Y is a bridging radical, such as S, Se, NR5 C(O), C(O)C(O),Si(R5)2, SO, SO2, PR5, BR5, C(R5)2 or P(O)R5. The synthetic methods employ a "Base-Catalyzed Halogen Dance" reaction to prepare a metallated compound comprising a five or six membered heteroaryl ring comprising a halogen atom, and then oxidatively coupling the reactive intermediate compound. The compounds of Formula (II) and/or oligomer or polymers comprising repeat units having Formula (II) can be useful for making semi-conducting materials, and/or electronic devices comprising those materials.
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(2011/09/15)
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- ACTIVE MATERIALS FOR PHOTOELECTRIC DEVICES AND DEVICES THAT USE THE MATERIAL
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A conjugated polymer has a repeated unit having the structure of formula (I) where in n is an integer greater than 1, R1 and R2 are independently selected from alkyl groups with up to 18C atoms, aryls and substituted aryls, and wherein Ar is selected from monocyclic, bicyclic and polycyclic arylene, or monocyclic, bicyclic and polycyclic heteroarylene, or may contain one to five such groups, either fused or linked.
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- Base-catalyzed halogen dance reaction and oxidative coupling sequence as a convenient method for the preparation of dihalo-bisheteroarenes
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Figure presented A one-pot preparation of the 2,2′-dibromo-1, 1′-bisheteroarenes 3a-d from bromo-heteroarenes utilizing the sequence of the base-catalyzed halogen dance (BCHD) reaction and CuCl2-promoted oxidative coupling of the in situ formed α-lithio-β-halo-heteroarenes 2a-d provides a convenient access to precursors for the preparation of tricyclic heteroaromatic cores. The structures of 3a,b,d, 6, and 9 were confirmed by single-crystal X-ray analysis, and dibromides 3a and 3b were used for the preparation of dithieno-[2,3-b:3′,2′-d]-pyrrole 10a and its selenophene analogue 10b, respectively.
- Getmanenko, Yulia A.,Tongwa, Paul,Timofeeva, Tatiana V.,Marder, Seth R.
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supporting information; experimental part
p. 2136 - 2139
(2010/08/05)
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- Synthesis and characterization of bridged bithiophene-based conjugated polymers for photovoltaic applications: Acceptor strength and ternary blends
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Six of three-component donor-acceptor random copolymers P1-P6, symbolized as (thiophene donor)m -(thiophene acceptor)n, were rationally designed and successfully synthesized by the palladium-catalyzed Stille coupling. The 4H-cyclopenta[2,l-b:3,4-b']dithiophene (CPDT) unit serves as the donor for Pl-P4, while the benzothiadiazole (BT), quinoxaline (QU), dithienoquinoxaline, and thienopyrazine (TP) units are used as the acceptor for P1, P2, P3, and P4, respectively. P5 and P6 are structurally analogous to P1 and P2 except for using the dithieno[3,2-b:2',3'-d]silole (DTS) unit as the donor. Because the band gap lowering ability of the acceptor units in the polymer is in the order TP > BT > QU presumably due to the quinoid form population in the polymers, the optical band gaps can be well adjusted to be 1.2,1.6, and 1.8 eV for P4, P1, and P2, respectively. It is found that the two bridged bithiophene units, CPDT and DTS, have similar steric and electronic effects on the P1 and P5 as well as P2 and P6, respectively, leading to comparable intrinsic properties and device performances. Bulk heterojunction photovoltaic cells based on ITO/PEDOT:PSS/polymer:PC7BM/Ca/Al configuration were fabricated and characterized. Although P4 exhibits the lowest optical band gap, broadest absorption spectrum, and highest mobility, the too low-lying LUMO level hinders the efficient exciton dissociation, resulting in a low PCE of 0.7%. Compared with poly[2,6-(4,4-bis(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b'] dithiophene)-alt-4,7-(2,l,3-benzothiadiazole)] (PCPDTBT), random copolymer P1 shows more blue-shifted, broader absorption spectrum, comparable mobility, and a higher PCE of 2.0%. In view of the fact that P1 shows a higher band gap with strong absorption in visible region, while PCPDTBT has a lower band gap to mainly absorb NIR light, a BHJ device with the active layer containing ternary blend of PCPDTBT/P1/PC71BM was investigated and achieved an enhanced PCE of 2.5%, which outperforms the devices based on the binary blending systems of PCPDTBT/ PC71BM(PCE = 1.4%)orP1/PC71BM(PCE = 2.0%) under the identical conditions. Such an improvement is ascribed to the complementary absorption and compatible structure of P1 and PCPDTBT polymers.
- Chen, Chiu-Hsiang,Hsieh, Chao-Hsiang,Dubosc, Martin,Cheng, Yen-Ju,Hsu, Chain-Shu
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p. 697 - 708
(2011/10/08)
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- Palladium-catalyzed cross-coupling reactions of dithienosilole with indium reagents: Synthesis and characterization of dithienosilole derivatives and their application to organic light-emitting diodes
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Three dithienosilole (DTS) derivatives bearing naphthyl segments, 5,5′-dinaphthyl-1,1-dimethyldithienosilol (1), 5,5′-dinaphthyl-1- methyl-1-phenyldithienosilole (2), and 5,5′-dinaphthyl-1,1- diphenyldithienosilol (3), are prepared through Pd(II)-catalyze
- Jung, Hwasoon,Hwang, Hyonseok,Park, Ki-Min,Kim, Jinho,Kim, Dong-Ha,Kang, Youngjin
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scheme or table
p. 2715 - 2723
(2010/08/06)
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- NONLINEAR OPTICAL MATERIAL COMPOSITION AND METHOD OF MANUFACTURE
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Embodiments of the present disclosure provide non-linear optical compounds and compositions comprising a silole-derivative. In an embodiment, the silole derivative comprises a chromophore including a structure represented by Formula (A): wherein each Of R
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Page/Page column 26
(2008/12/08)
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- Synthesis, characterization, and photovoltaic properties of a low band gap polymer based on silole-containing polythiophenes and 2,1,3-benzothiadiazole
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A new low band gap silole-containing conjugated polymer, PSBTBT, was designed and synthesized. Photovoltaic properties of PSBTBT were initially investigated, and an average power conversion efficiency (PCE) of 4.7 % with a best PCE of 5.1 % was recorded under illumination (AM 1.5G, 100 mW/cm2). The response range of the device covers the whole visible range from 380 to 800 nm. These results indicate that PSBTBT is a promising polymer material for applications in polymer solar cells. Copyright
- Hou, Jianhui,Chen, Hsiang-Yu,Zhang, Shaoqing,Li, Gang,Yang, Yang
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supporting information; experimental part
p. 16144 - 16145
(2009/05/08)
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