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woshibadchen金蟲 (正式寫手)
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[求助]
50金幣求英譯漢 有機(jī)二極管專業(yè)
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The synthesis and structural, photophysical, electrochemical, and electroluminescent properties of a class of platinum(II) complexes bearing ó-alkynyl ancillary ligands, namely [(C^N^N)Pt(C≡C)nR] [H(C^N^N)═ 6-aryl-2,2′-bipyridine; n= 1- 4; R= aryl, alkyl, or trimethylsilyl], have been studied. Substituents with different steric and electronic properties were introduced into the tridentate cyclometalating and arylacetylide ligands, and the π-conjugation length of the oligoynyl moiety was homologously extended from ethynyl to octatetraynyl. The X-ray crystal structures of several derivatives confirm the Pt (C≡C) ligation and reveal various intermolecular interactions, such as π-π,Pt… Pt, and C- H …F- C. The complexes display good thermal stability and intense phosphorescence in fluid and glassy solutions with high quantum yields and microsecond lifetimes. Their emission energies are sensitive to solvent polarity, the electronic affinities of the substituents on both the cyclometalating and arylacetylide groups, and the length of the oligoynyl ligand. By choosing appropriate cyclometalating and ó-alkynyl ligands, the emission color of this class of platinum(II) complexes can be tuned from green-yellow to saturated red. In addition to 3MLCT [Pt(5d)→π*(C^N^N)] and 3IL(C^N^N), intriguing 3IL(alkynyl) excited states localized on -(C≡C)4 and (C≡Cpyrenyl-1) moieties that afford narrow-bandwidth emissions have been observed. Selected Pt(II) complexes were doped into the emissive region of multilayer, vapor-deposited organic light-emitting diodes. The tunable electrophosphorescence energy resembles that recorded in fluid solutions for these emitters, and the devices exhibit high luminance and efficiencies (up to 4.2 cd A- 1). 謝絕軟件翻譯，謝謝 [ Last edited by woshibadchen on 2011-6-27 at 08:44 ] |
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liubencai
木蟲之王 (文壇精英)
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4樓2011-06-27 09:27:43
liubencai
木蟲之王 (文壇精英)
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【答案】應(yīng)助回帖
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一類帶有炔基輔助基團(tuán)的鉑的配合物即[(C^N^N)Pt(C≡C)nR] [H(C^N^N)═ 6-芳基-2,2′-二吡啶; n= 1- 4; R= 芳基,烷基, 或三甲基硅烷基]，研究了它們的合成、結(jié)構(gòu)、光物理、電化學(xué)和電致發(fā)光的性質(zhì)。 不同空間和電子性質(zhì)的取代基引入到三齒環(huán)金屬化核芳基乙炔物配體中，寡炔基部分π共軛的長度從乙炔基到辛四炔基等同地擴(kuò)展。 幾種衍生物的x射線的晶體結(jié)構(gòu)確定了Pt (C≡C) 配位，并顯示了不同的分子間的相互作用，例如π-π,Pt… Pt, 和 C- H …F- C. |
2樓2011-06-27 09:08:43
liubencai
木蟲之王 (文壇精英)
- 翻譯EPI: 37
- 應(yīng)助: 84 (初中生)
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- 帖子: 21817
- 在線: 2403.8小時
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- 注冊: 2006-08-20
- 性別: GG
- 專業(yè): 配位化學(xué)
【答案】應(yīng)助回帖
woshibadchen(金幣+50, 翻譯EPI+1): 20，謝謝你 2011-06-28 08:08:42
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此外已觀察到3MLCT [Pt(5d)→π*(C^N^N)]和3IL(C^N^N)有趣的3IL(炔基)的激發(fā)態(tài)位于-(C≡C)4 和 (C≡Cpyrenyl-1) 部分，提供了窄-頻帶發(fā)射。 有選擇的鉑配合物摻雜到多分子層的、蒸氣沉積的有機(jī)發(fā)光二極管的發(fā)射區(qū)中。 可調(diào)的電致磷光的能量類似于這些在發(fā)射器和裝置中的記錄，表明了高亮度和高效率(高達(dá) 4.2 cd A- 1) |
5樓2011-06-27 09:42:56
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