Synthesis and electronic spectra of new low-molecular weight compounds with possible application in electroluminescent layers

• Authors: Georgi Dobrikov , Georgi Dobrikov , Mariya Aleksandrova
• Languages of publication: EN

Abstracts

EN

Two new low-molecular weight compounds - (Z)-4-(4-(dimethylamino)benzylidene)-1-(9-ethyl-9H-carbazol-3-yl)-2-phenyl-1H-imidazol-5(4H)-one and 2-(6-hydroxyhexyl)-6-(pyrrolidin-1-yl)-1H-benzo[de]isoquinoline-1,3(2H)-dione) - with possible application in organic light-emitting devices were synthesized. Their photophysical properties in solution and in polymer films were investigated. The determined relative fluorescence quantum yields in solution for both compounds were 0.003 and 0.51, while those in poly(methyl methacrylate) films were around 0.10 and 1.0, respectively. For 1H-imidazol-5(4H)-one derivative, single-layer organic displays with one emitting layer were prepared by spin-coating technology. The applied voltage was 40 V (AC) with 1–3 KHz frequency. The emission maximum of the experimental AC display structures was at 600–630 nm. For displays with 2-(6-hydroxyhexyl)-6-(pyrrolidin-1-yl)-1H-benzo[de]isoquinoline-1,3(2H)-dione) the applied voltage was 60 V (AC) with 6-9 KHz frequency, but its future success will require more appropriate binding polymers. Based on the obtained experimental results, it is concluded that the investigated compounds could be applied for preparation of color electroluminescent structures. [...]

Keywords

EN

Low-molecular weight compounds; 1,8-naphthalimides; Imidazolones; Fluorescence; Electroluminescent layers

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2011
• Volume: 9
• Issue: 6
• Pages: 1126-1132

Dates

published

1 - 12 - 2011

online

27 - 9 - 2011

Contributors

author

Georgi Dobrikov

• Department of Microelectronics, Technical University of Sofia, Sofia, 1000, Bulgaria

author

Georgi Dobrikov

• Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Sofia, 1113, Bulgaria

author

Mariya Aleksandrova

• Department of Microelectronics, Technical University of Sofia, Sofia, 1000, Bulgaria

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Identifiers

DOI

10.2478/s11532-011-0098-3