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1.
利用基于萘[1,2-c:5,6-c]二[1,2,5]噻二唑共轭聚合物(NTOD)为给体, 富勒烯衍生物PC71BM为受体, 制备本体异质结聚合物光探测器. NTOD与PC71BM 的共混薄膜吸收范围为300 ~ 830 nm. 通过 对NTOD:PC71BM活性层厚度的调控实现器件暗电流密度的显著降低,增强了探测器的二极管性能,同时保持较高的外量子转化效率. 当活性层厚度为385 nm时,聚合物光探测器在?0.1 V偏压下的暗电流为6.69 × 10–10 A cm?2. 在–0.1 V偏压下器件在440 ~ 800 nm的工作波段的比探测率均超过1013 cm Hz1/2 W?1,处于750 nm的工作波长下达到最大比探测率为1.50 × 1013 cm Hz1/2 W?1,光响应率为0.22 A W?1,这些结果表明基于NTOD:PC71BM的有机光探测器具有广阔的应用前景. 相似文献
2.
Korolev V. L. Toporov V. V. Merkulova N. L. Danilenko V. M. Ivshin V. P. Pivina T. S. 《Russian Chemical Bulletin》2017,66(11):2126-2130
N-Substituted imidazo[4,5-e]benzo[1,2-c;3,4-c’]difuroxans were synthesized by phase-transfer catalyzed alkylation of imidazo[4,5-e]benzo[1,2-c;3,4-c’]difuroxan salts with various alkylating agents. Acid hydrolysis of N-(ethoxycarbonylmethyl)imidazo[4,5-e]benzo-[1,2-c;3,4-c’]difuroxans gives the corresponding carboxylic acids. Structures of the synthesized compounds were confirmed by NMR spectroscopy, high resolution mass spectrometry, IR spectroscopy, and elemental anslysis.
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Karin Czech Norbert Haider Gottfried Heinisch 《Monatshefte für Chemie / Chemical Monthly》1991,122(5):413-418
Summary Starting from 3-chloro-4-pyridazinecarbonitrile (1), the thienopyridazine derivatives2 and3 were prepared. Condensation of3 with triethyl orthoformate afforded the novel tricyclic system4. Reaction of1 with 2-aminothiophenol, followed by treatment with NaH/DMSO was found to give the diaza-phenothiazine6 instead of the expected condensed thiazepine.Dedicated with best wishes to Prof. Dr. G. Zigeuner on the occasion of his 70th anniversary 相似文献
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《中国科学:化学(英文版)》2015,(2)
Four new 2D donor–acceptor conjugated polymers were designed and synthesized.These new polymers comprised fluorenealt-triphenylamine or carbazole-alt-triphenylamine as the backbones,and pendants with 2,1,3-benzothiadiazole(BT)or naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole(NT)in a triphenylamine unit as the side groups.By changing the acceptor BT for a stronger electron-withdrawing unit of NT moiety in the side chain,the energy levels,absorption spectra,band gaps,and charge-transport abilities of the resultant polymers could be effectively tuned.Bulk heterojunction solar cells with these polymers as the electron donors and(6,6)-phenyl-C71-butyric acid methyl ester as the electron acceptor exhibited high open-circuit voltage(more than 0.8 e V).The power conversion efficiency can be improved from 1.37%to 3.52%by replacing the BT with an NT moiety,which indicates that introducing NT as the side-chain building block can be an effective strategy to construct efficient 2D conjugated polymers for PSCs. 相似文献
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Pinho e Melo TM Soares MI Rocha Gonsalves AM Paixão JA Beja AM Silva MR Alte da Veiga L Pessoa JC 《The Journal of organic chemistry》2002,67(12):4045-4054
Intramolecular dipolar cycloaddition of bicyclic münchnones, 5H,7H-thiazolo[3,4-c]oxazol-4-ium-1-olates, derived from cyclodehydration of 2-substituted-N-acylthiazolidine-4-carboxylic acids are reported. A range of new pyrrolo[1,2-c]thiazole derivatives (7, 14, 15, 20, 23, and 26) were obtained as single enantiomers from 2-phenylthiazolidines, 2-benzoylthiazolidines, and 2-methylthiazolidine-4-carboxylates. Pyrrolo[1,2-c][1,4]thiazine derivative 27 was also obtained from pyrrolo[1,2-c]thiazole derivative 26. The structures of methyl (2R,4R)-2-(p-methoxybenzoyl)thiazolidine-4-carboxylate (17a), methyl (2R,4R)-2-(p-methoxybenzoyl)-N-(prop-2-ynyloxyacetyl)thiazolidine- 4-carboxylate (18), and 3-oxo-4-phenyl-3,4,6,8-tetrahydro-1H-furo[3',4':2,3]pyrrolo[1,2-c][1,4]thiazine (27) were determined by X-ray crystallography. Chirooptical studies of the pyrrolo[1,2-c]thiazoles were done by confirming the absolute configuration at the chiral center C-3. 相似文献
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Ye Linglong Li Xueshan Cai Yunhao Ryu Hwa Sook Lu Guangkai Wei Donghui Sun Xiaobo Woo Han Young Tan Songting Sun Yanming 《中国科学:化学(英文版)》2020,63(4):483-489
Benzo[1,2-b:4,5-b′]dithiophene(BDT) has been widely used to construct donor-acceptor(D-A) copolymers in organic solar cells(OSCs). However, benzo[1,2-b:4,5-b′]difuran(BDF), an analogue of BDT, has received less attention than BDT. The photovoltaic performance of BDF copolymers has lagged behind that of BDT copolymers. Here, we designed and synthesized two BDF copolymers, PBF1-C and PBF1-C-2Cl. PBF1-C-2Cl, which is composed of BDF and benzo[1,2-c:4,5-c′]dithiophene-4,8-dione connected by a chlorinated thiophene π-bridge, displays a low-lying highest occupied molecular orbital energy level,which helps in yielding a high open-circuit voltage(V_(oc)) in OSCs. As a result, when blended with Y6, PBF1-C-2Cl-based devices showed a high V_(oc) of 0.83 V and a power conversion efficiency(PCE) of 13.10%. To the best of our knowledge, the PCE of 13.10% is among the highest efficiency values for OSCs based on BDF copolymers. 相似文献
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HongMinMA ZhanZhuLIU ShiZhiCHEN XiaoTianLIANG 《中国化学快报》2004,15(7):759-761
A concise and efficient synthesis of the new compounds tetrahydroisoquino [2,1-c] [1,3]benzodiazepine 5 and 7 is reported. 相似文献
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On the viewpoints of physical and chemical properties and biological activities, syntheses of a variety of heterocycle-fused azulenes have been repoted.[1] Of them, thiophene-fused azulenes were prepared by using different types of stating materials as follows. Azuleno[2,1-b] thiophenes are readily obtained from the reactions of 2-chloroazulene derivatives with ethyl mercaptoacetate in a few steps in good yield by Matsui[2] and Yamane.[3] On the other hand, the first synthesis of azuleno[1,2-c]thiophenes was accomplished by the reaction of 3-methoxycarbonyl-2H-cyclohepta[b]furan2-one with morpholino enamine of 3-oxotetrahydro-thiophene followed by dehydrogenation in poor yield by Fujimori. 相似文献
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An approach to the synthesis of derivatives of new heterocyclic system, pyrido[3′,2′:4,5]-furo[3,2-c]isoquinoline, was suggested. A condensation reaction of substituted 3-cyanopyridin-2(1H)-ones with methyl 2-(chloromethyl)benzoate and subsequent treatment of the condensation product with potassium tert-butoxide leads to substituted pyrido[3′,2′:4,5]furo[3,2-c]-isoquinolin-5(6H)-ones. Similarly, a condensation reaction of substituted 3-cyanopyridin-2(1H)-ones with 2-(chloromethyl)benzonitrile and subsequent treatment of the condensation product with potassium tert-butoxide gives substituted 5-aminopyrido[3′,2′:4,5]furo[3,2-c]-isoquinolines. 相似文献
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4-chloroquinoline-3-carboxylates 2 and 5-mercapto-1,2,4-triazoles 3 have been cyclised to a novel heterocyclic system 4 . 相似文献
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Synthesis of Furano[3,2-c]- and Pyrano[3,2-c]quinolines upon Imino Diels-Alder Reactions Initiated by Nitrosonium (NO^+) 总被引:1,自引:0,他引:1
Efficient nitrosonium (NO+)-initiated aza-Diels-Alder reactions of N-arylimines with 2,3-dihydrofuran or 3,4-dihydro-2H-pyran allowed access to furano[3,2-c]- or pyrano[3,2-c]quinolines. A mixture of cis and trans-quinoline isomers was obtained in various ratios and yields. 相似文献
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V. A. Artemov V. L. Ivanov A. V. Koshkarov A. M. Shestopalov V. P. Litvinov 《Chemistry of Heterocyclic Compounds》1998,34(1):96-101
Pyrido[3,2:4,5]thieno[2,3-c]cinnolines, new heterocyclic compounds, were obtained in three steps: 1) alkylation of 3-cyanopyridine-2(1H)-thiones by o-nitrobenzyl bromide to give 2-(o-nitrobenzyl)thio-3-cyanopyridines, 2) closure of the thiophene ring in these intermediates to give 3-amino-2-(o-nitrophenyl)thieno[2,3-b]pyridines, and 3) closure of the pyridazine ring by condensation of the amino and nitro groups in triethyl phosphite, leading to the final heterocyclic system.N. D. Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, 117913 Moscow. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 1, pp. 104–109, January, 1998. 相似文献
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《中国化学快报》2017,(2)
A green,convenient,high yielding and one-pot procedure for the synthesis of novel spiro[benzo[α]pyrano[2,3-c]phenazine]derivatives by domino multi-component condensation reaction between 2-hydroxynaphthalene-l,4-dione,benzene-l,2-diamines,ninhydrine,and malononitrile in the presence of a catalytic amount of 1,3-dimethyl-7H-purine-2,6-dione(theophylline) as an expedient,eco-friendly and reusable solid base catalyst under thermal,microwave irradiation and solvent-free conditions.This procedure has also been applied successfully for the synthesis of benzo[α]pyrano[2,3-c]phenazines. 相似文献
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A facile one-pot, multicomponent protocol for the synthesis of 1,4-dihydro-pyrano[2,3-c]pyrazole derivatives using a urea catalyst is reported. This transformation proceeds via a four-component reaction of ethyl acetoacetate, a hydrazine, 3-oxo-pentanedioic acid dimethyl ester, and malononitrile. The bifunctional nature of urea means that it catalyzes many steps in this transformation, including domino Knoevenagel condensation, Michael addition, and ring opening and closing reactions. This synthetic method has several advantages, including good yield, simple work-up, harmless by-products, and simple purification. 相似文献
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J. M. Quintela M. C. Veiga S. Conde C. Peinador 《Monatshefte für Chemie / Chemical Monthly》1996,127(6-7):739-745
Summary A facile synthesis of 8-substituted pyrimido[4,5:4,5]thieno[2,3-c]pyridazines (6a–i) has been accomplished. The sequence involves the ring closure of a heterocyclic aminonitrile precursor (3) after reaction with (dichloromethylene)-dimethylammonium chloride.
Eine allgemeine Synthese von Pyrimido[4,5:4,5]thieno[2,3-c]pyridazin-Derivaten
Zusammenfassung Es wurde ein einfacher Syntheseweg für 8-substituierte Pyrimido[4,5:4,5]thieno-[2,3-c]pyridazine entwickelt. Die Reaktion verläuft über den Ringschluß eines heterocyclischen Aminonitrilvorläufers (3) nach Umsetzung mit Dichlormethylen-dimethylammoniumchlorid.相似文献
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V. I. Terenin A. V. Borisov E. L. Ruchkina A. P. Pleshkova 《Chemistry of Heterocyclic Compounds》1999,35(2):211-215
We have synthesized a series of previously unreported azo dyes via the azo coupling of alkyl substituted dipyrrolopyrazines with aryldiazonium chloride. For this type of substrate where one or both -positions of the pyrrole rings of the molecules are not occupied by substituents, electrophilic attack was found to occur initially at carbon atom C(3).For communication 4 see [1]M. V. Lomonosov State University, Moscow 119899, Russia Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 236–240, February, 1999. 相似文献
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V. I. Terenin E. L. Ruchkina A. P. Pleshkova Yu. G. Bundel 《Chemistry of Heterocyclic Compounds》1998,34(7):822-829
We have studied the aminomethylation reaction of alkyl substituted dipyrrolo[1,2-a; 2,1-c]pyrazines and their 5,6-dihydro analogs using different aminomethylating agents. Use of alkoxydialkylaminomethanes (aminoacetals) as Mannich reagents leads to the highest yields of the aminomethylated dipyrrolopyrazines. The compounds prepared have been studied by mass spectrometry.For Communication 3, see [1].M. V. Lomonosov State University, Moscow 119899. Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 949–957, July, 1998. 相似文献