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基于N-乙基咔唑-2-乙烯基-8-羟基喹啉锌的黄绿色有机电致发光器件的性能 总被引:3,自引:0,他引:3
通过用一种既具有空穴传输特性又具有发光特性的新型荧光染料N-乙基咔唑-2-乙烯基-8-羟基喹啉锌((E)-2-(2-(9-ethyl-9H-carbazol-3-yl)vinyl) quinolato-zinc, CzHQZn)作为受主, 制备了结构为ITO/2T-NATA (30 nm)/CBP: 6%Ir(ppy)3:wCzHQZn(20 nm)/Alq3(50 nm)/LiF/Al(ITO: indium-tin oxide, 2T-NATA: 4,4',4'-{N,N-(2-naphthyl)-N-phenylamino}-triphenylamine, CBP: 4,4-N,N'-dicarbazole-biphenyl, Ir(ppy)3: factris (2-phenylpyridine) iridium, Alq3: tris(8-quinolinolato) aluminum; w 是CzHQZn 的质量分数)的黄绿色有机电致发光器件(OLEDs). 研究了掺杂体系在不同掺杂浓度(w=5%、10%、12%、15%)时的电致发光(EL)特性. 结果表明, CzHQZn 掺杂浓度为10%的器件在11 V 电压下实现了黄绿光发射, 色坐标为(0.4045, 0.5113), 最大发光亮度为16110 cd·m-2; 而在7 V电压下的最大发光效率为2.19 cd·A-1, 最大外量子效率为0.775%. 相似文献
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A facile synthesis of hitherto unreported benzofuran-2-yl(9-methyl-9H-carbazol-3-yl)methanones (3a?Cl) is described. The synthesis mainly relies on the ultrasound-assisted Rap?CStoermer reaction of 3-chloroacetyl-9-methyl-9H-carbazole (1) with a variety of salicylaldehydes, as well as 2-hydroxy-1-naphthaldehyde (2) in CH3CN, with the presence of PEG-400 as a catalyst. This procedure offers easy access to benzofuran-2-yl(carbazolyl)methanone derivatives in a short reaction time and the products are achieved in good yields. 相似文献
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Serkov S. A. Sigai N. V. Kostikova N. N. Fedorov A. E. Gazieva G. A. 《Russian Chemical Bulletin》2022,71(8):1801-1805
Russian Chemical Bulletin - A general and efficient method for the synthesis of S-substituted 5-sulfanylmethyl(ethyl)-1,3,4-thiadiazol-2-amines via cyclocondensation of aryl(benzyl)sulfanylacetic... 相似文献
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The objective was to synthesize (Z)-2-(5-Amino-1,2,4-thiadiazol-3-yl)-2-ethoxyiminoacetic acid (the side chain for Ceftaroline fosamil). Oximation and alkylation were used on cyanoacetamide to get 2-cyano-2-hydroxyiminoacetamide, which became 2-ethyoxyiminopropanedinitrile through reaction with phosphorus oxychloride, and then aminolysis to get 2-ethoxyiminopropanedinitrile, which became 2-ethoxyimion-2-(5-amino-1,2,4 thiadiazol-3-yl) acetonitrile by brominating and with KSCN, followed by hydrolysis to get (Z)-2-(5-Amino-1,2,4-thiadiazol-3-yl)-2-ethoxyiminoacetic acid. 相似文献
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Starting from readily available 1-methyl-5-nitroimidazole-2-carboxylic acid hydrazide (1), 1-methyl-2-(1,3,4-thiadiazol-2-yl)-5-nitroimidazole (4) and 1-methyl-2-(1,3,4-oxadiazol-2-yl)-5-nitroimidazole (10) were prepared. The reaction of 1 with formic acid gave 1-(1-methyl-5-nitroimidazole-2-carboxyl)-2-(formyl)hydrazine ( 8 ) in high yield. Refluxing of the latter with phosphorus pentasulfide in xylene yielded compound 4 in 50% yield. Reaction of compound 8 with phosphorus pentoxide afforded compound 10 in 60% yield. 相似文献
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根据活性基团拼合原理, 用2-氯硒基苯甲酰氯和2-氨基-5取代-1,3,4-噻二唑缩合合成了10个新的2-(2-取代- 1,3,4-噻二唑-5-基)-苯并异硒唑-3(2H)-酮衍生物(6), 并通过IR, 1H NMR, ESI-MS和元素分析对其结构进行了确认, 采用CCK-8法测试了化合物抑制肿瘤细胞增殖活性. 结果表明, 化合物6h对人体肺癌细胞A-549, 化合物6a, 6b, 6d, 6e, 6f, 6g, 6h, 6j对人体乳腺癌细胞MCF-7, 化合物6a, 6b, 6d, 6e, 6f, 6g对人体肝癌细胞SSMC-7721抑制活性均强于阳性对照药依布硒啉, 且表现出一定的选择性, 具有进一步研究的潜在价值. 相似文献
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[5-(芳亚甲基氨基)-1,3,4-噻二唑-2-基]硫乙酰芳胺的合成及 生物活性研究 总被引:2,自引:0,他引:2
在K2CO3存在下利用聚乙二醇-400 (PEG-400)作相转移催化剂, 于固-液相转移催化条件下, 通过5-芳亚甲基氨 基-2-巯基-1,3,4-噻二唑与氯乙酰芳胺的硫烷基化反应, 合成了16个未见文献报道的[5-(芳亚甲基氨基)-1,3,4-噻二唑-2-基]硫乙酰芳胺衍生物. 经元素分析, FT-IR,1H NMR和13C NMR确证了其结构. 生物活性实验结果表明, 部分化合物对小麦幼苗的生长具有明显的植物生长调节活性, 并对枯草杆菌具有一定的抑制活性. 相似文献
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CHAI Lan-Qin 《有机化学》2003,23(Z1):309-310
The rapid heating effect of microwave irradiation has caught the attention of synthetic chemists in the recent times due to the remarkable reduction of reaction time. It is an efficient method because of its virtue of rapid heating capability, high yield and simple procedure. The superiority of these virtues goes beyond of traditional heating reaction. 相似文献
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F. Firoozi K. Javidnia M. Kamali A. Fooladi A. Foroumadi A. Shafiee 《Journal of heterocyclic chemistry》1995,32(1):123-128
Starting from readily available ethyl-4-nitropyrrole-2-carboxylate ( 1 ), substituted 1-methyl-2-(1,3,4-thiadiazol-2-yl)-4-nitropyrroles and 1-methyl-2-(1,3,4-oxadiazol-2-yl)-4-nitropyrroles were prepared. The reaction of 1 with diazomethane gave ethyl 1-methyl-4-nitropyrrole-2-carboxylate ( 2 ). Reaction of compound 2 with hydrazine hydrate afforded the corresponding hydrazide 3 . The reaction of 3 with formic acid yielded 1-(1-methyl-4-nitropyrrole-2-carboxyl)-2-(formyl)hydrazine ( 7 ). Refluxing of the latter with phosphorus pentasulfide in xylene yielded compound 6 in 40% yield. Reaction of compound 7 with phosphorus pentoxide afforded compound 9 . Reaction of compound 3 with 1,1′-carboxyldiimidazole in the presence of triethylamine yielded 2-(1-methyl-4-nitro-2-pyrrolyl)-1,3,4-oxadiazoline-4(H)-5-one ( 11 ). Refluxing compound 3 with cyanogen bromide in methanol gave compound 12 . Compound 13 could be obtained through the reaction of compound 3 with carbon disulfide in basic medium. Alkylation of compound 13 afforded the correspanding alkylthio derivative 14 . Reaction of 1-methyl-4-nitropyrrole-2-carboxylic acid ( 15 ) with thiosemicarbazide and phosphorus oxychloride gave 2-amino-5-(1-methyl-4-nitro-2-pyrrolyl)-1,3,4-thiadiazole ( 16 ). Sandmeyer reaction of compound 16 yielded 2-chloro-5-(1-methyl-4-nitro-2-pyrrolyl)-1,3,4-thiadiazole ( 17 ). Refluxing of the latter with thiourea afforded 2-(1-methyl-4-nitro-2-pyrrolyl)-1,3,4-thiadiazoline-4(H)-5-thione ( 18 ). Alkylation of compound 18 gave the corresponding alkylthio derivative 19 . Oxidation of the latter with hydrogen peroxide in acetic acid yielded 2-(1-methyl-4-nitro-2-pyrrolyl)-5-methylsulfonyl-1,3,4-thiadiazole ( 20 ). 相似文献
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B. Sapiyanskaite V. Mickevicius G. Mikulskene 《Chemistry of Heterocyclic Compounds》2003,39(9):1142-1152
Derivatives of 1-(9-alkyl-9H-carbazol-3-yl)-4-carboxy-2-pyrrolidinones (methyl esters, hydrazides) were synthesized. The condensation of the synthesized hydrazides with aromatic aldehydes, acetylacetone, and acetoacetic ester was studied. Structure of the obtained compounds was confirmed by IR and NMR spectroscopy. The specific characteristics of the substituents are discussed. 相似文献
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Hakan Kandemir 《合成通讯》2013,43(22):2583-2591
A simple and efficient synthesis of novel 3-(benzimidazol-2-yl)- and 3,6-di(benzimidazol-2-yl)-9-ethyl-9H-carbazoles is described. The synthetic approach for the preparation of 2-substituted benzimidazoles 4–8 and bis-benzimidazoles 9–12 was achieved by the condensation of carbazole-3-carbaldehyde 2 and carbazole-3,6-dicarbaldehyde 3 with o-phenyldiamines in dimethylformamide or dimethylsulfoxide in moderate to excellent yield. The identities of synthesized compounds were confirmed using 1H NMR, 13C NMR, infrared (IR), and high-resolution mass spectrometry (HRMS). 相似文献
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Synthesis, Crystal Structure and Bioactivities of 1-(4-Chlorophenyl)-3- [ 5-(pyrid-4-yl)- 1,3,4-thiadiazol-2-yl] urea 总被引:1,自引:0,他引:1
The title compound 1-(4-chlorophenyl)-3-[5-(pyrid-4-yl)-1,3,4-thiadiazol-2-yl]urea (C14H10ClN5OS, Mr = 331.79) has been synthesized by the reaction of 2-amino-5-(pyrid-4-yl)- 1,3,4-thiadiazole with 4-chlorobenzoyl azide, and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to triclinic system, space group P with a = 5.8550(8), b = 7.5668(10), c = 16.416(2) , α = 78.364(2), β = 81.204(2), γ = 84.749(2)°, V = 702.58(16) 3, Z = 2, Dc = 1.568 g/cm3, μ = 0.429 mm-1, F(000) = 340, the final R = 0.0442 and wR = 0.1092 for 2001 observed reflections (I > 2σ(I)). X-ray diffraction analysis reveals that the title molecule is nearly planar. In the crystal structure, the molecules are linked by strong intermolecular N-H…N hydrogen bonds together with weak nonclassical intermolecular (C-H…Y, Y = N, O and Cl) hydrogen bonds and stacked through π-π interactions. The preliminary bioassay shows that the title compound exhibits good fungicidal activities against Rhizoctonia solani, Botrytis cinerea and Dothiorella gregaria. 相似文献
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1 INTRODUCTION 1,3,4-Thiadiazole derivatives represent an interes- ting class of compounds possessing broad spectrum biological activities[1~4]. Aroyl ureas are known to exhibit diverse biological effects, such as insecticidal, fungicidal, herbicidal and plant growth regulating activities[5~8]. Therefore, it is worthwhile to investi- gate the compounds incorporating both 1,3,4-thiadia- zole nucleus and aroyl urea group. In the previous paper[9], a series of aroyl ureas containing 1,3,4-t… 相似文献
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超声辐射下合成1-[(未)取代苯酰基-3-[5-(1-苯基-3-甲基-5-氯吡唑-4-基)-1,3,4-噻二唑-2-基]-硫脲 总被引:2,自引:0,他引:2
1-苯基-3-甲基-5-氯吡唑-4-甲酸与氨基硫脲在三氯氧磷中反应得到2-氨基-5-(1-苯基-3-甲基-5-氯吡唑-4-基)-1,3,4-噻二唑(1), 然后分别采用超声辐射法和常规加热法与(未)取代苯甲酰基异硫氰酸酯(2)反应合成了一系列未见报到的1-[(未)取代苯酰基-3-[5-(1-苯基-3-甲基-5-氯吡唑-4-基)-1,3,4-噻二唑-2-基]-硫脲(3a~3j). 化合物的结构经元素分析, IR, 1H NMR确证. 相似文献
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A purely organic compound 2-(9 H-carbazol-9-yl)-3-(2-(2,4,5-tri-(9 H-carbazol-9-yl)-3,6-dicyanophenoxy)phenoxy)dibenzo[b,e][1,4]dioxine-1,4-dicarbonitrile, C_(76) H_(40) N_8 O_4, was synthesized and characterized by NMR, UV-Vis, photoluminescenceand X-ray single-crystal structure analysis. The compound crystallizes in monoclinic system, space group P2_1/n with a = 11.6537(3), b = 34.9738(8), c = 15.5053(3) ?, β =101.992(2)°, V = 6181.6(2)?~3, Z = 4, M_r= 1129.18 g/mol, D_c =1.396 g/cm~3, F(000) =2672, μ = 2.239 mm~(–1), GOOF = 1.019, the final R = 0.0577 and wR= 0.1559 for 11925 observed reflections with I 2σ(I). The UV-vis absorption and fluorescence of the compound were discussed. The compound exhibitsyellow-green luminescence with maximum emission peak at 538 nm, and quantum yields of ф = 0.25 and 0.48 in air-equilibrated and degassed toluene at room temperature. Transient decay spectral studies show that compound 1 displays two component decay fashions with a short decay lifetime of 23 ns for the prompt fluoresce anda long decay lifetime of 3.8ms for thermally activated delayed fluorescence. In air-equilibrated toluene, only a short decay lifetime of 17 ns was observed.The experimental and computational results show thatthe emission of the compound originates from the CT excited states. 相似文献