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Similar or Totally Different: The Control of Conjugation Degree through Minor Structural Modifi cations, and Deep-Blue Aggregation-Induced Emission Luminogens for Non-Doped OLEDs  
Similar or Totally Different: The Control of Conjugation Degree through Minor Structural Modifi cations, and Deep-Blue Aggregation-Induced Emission Luminogens for Non-Doped OLEDs
資料類型: PDF文件
關(guān)鍵詞: Aggregation-Induced  Emission  Deep-Blue  Conjugation  Degree  
資料大?。?/td> k
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來(lái)源: 來(lái)源網(wǎng)絡(luò)
簡(jiǎn)介:
Four 4,4 ′ -bis(1,2,2-triphenylvinyl)biphenyl (BTPE) derivatives, 4,4 ′ -bis(1,2,2- triphenylvinyl)biphenyl, 2,3 ′ -bis(1,2,2-triphenylvinyl)biphenyl, 2,4 ′ -bis(1,2,2- triphenylvinyl)biphenyl, 3,3 ′ -bis(1,2,2-triphenylvinyl)biphenyl and 3,4 ′ -bis(1,2,2-triphenylvinyl)biphenyl ( o TPE- m TPE, o TPE- p TPE, m TPE- m TPE, and m TPE- p TPE, respectively), are successfully synthesized and their thermal, optical, and electronic properties fully investigated. By merging two simple tetraphenylethene (TPE) units together through different linking positions, the π -conjugation length is effectively controlled to ensure the deep-blue emission. Because of the minor but intelligent structural modifi cation, all the four fl uorophores exhibit deep-blue emissions from 435 to 459 nm with Commission Internationale de l’Eclairage (CIE) chromaticity coordinates of, respectively, (0.16, 0.14), (0.15, 0.11), (0.16, 0.14), and (0.16, 0.16), when fabricated as emitters in organic light-emitting diodes (OLEDs). This is completely different from BTPE with sky-blue emission (0.20, 0.36). Thus, theseresults may provide a novel and versatile approach for the design of deepblueaggregation-induced emission (AIE) luminogens.
上傳人: lizhen
上傳時(shí)間: 2014-02-10 19:48:50
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