کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5226121 | 1383567 | 2006 | 12 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Photo- and electroluminescent properties of cyano-substituted styryl derivatives and synthesis of CN-PPV model compounds containing an alkoxy spacer for OLEDs Photo- and electroluminescent properties of cyano-substituted styryl derivatives and synthesis of CN-PPV model compounds containing an alkoxy spacer for OLEDs](/preview/png/5226121.png)
The series of cyano-substituted model compounds 18-20 for organic light emitting diodes (OLEDs) was prepared through Knoevenagel condensation reactions between the dialdehydes 3,6,9 and the differently substituted acetonitrile derivatives 11,16,17. The influence of the different substituents on the optical properties of the resulting α-cyanostyryl compounds 18-20 was investigated. Another series of dimeric cyano-substituted styryl compounds 26-28 were prepared, in which a flexible, nonconjugated spacer is present between the two cyanostyryl moieties. The spacer isolates the Ï-conjugated portions of dimeric compounds 26-28, improves their solubility in common organic solvents, and decreases their tendency to crystallize. These features are favorable for producing efficient luminescent films in OLEDs devices.
A series of cyano-substituted model compounds (18-20) for OLEDs were prepared and the influence of electron releasing and electron-withdrawing substituents on α-cyanostyryl moieties was investigated as far as their emissive and absorptive properties were concerned.
Journal: Tetrahedron - Volume 62, Issue 26, 26 June 2006, Pages 6236-6247