Volume : VII, Issue : I, January - 2017
Push–pull structures of symmetric silane derivatives as a novel hosting materials
Dorota Zajac, Jadwiga Soloducho, Tomasz Jarosz, Mieczys Aw Apkowski, Szczepan Roszak
Abstract :
: Silane–based symmetric (4a–g, 9a–c) conjugated systems including electron rich heterocycle rings were designed and efficiently synthesized by the Suzuki/Stille condensation and Ullmann reaction. The structures characterize with a comparatively small band gaps and indicate deep absorption in the region 230–500 nm. Moreover, synthesized derivatives reveal light emission in practically the whole visible light. The electrochemical survey disclosed the onset of the oxidation signal was found at relatively low potentials. The band gap (1.55 eV – 2.64 eV) creates the structures potentially suitable as a hosting medium for emitters. The lowest electrochemical and optical band gap describes dithienosiloles, the largest – structure with tetraphenylsilane group. The electrochemical character of dithienosilole/tetraphenylsilane blocks was also certified by EPR as well as theoretical studies. The calculations explains the contrast between electrochemical and optical experimentally estimated energy gaps.
Keywords :
silane derivatives luminescent materials organic light–emitting diode Stille coupling Suzuki condensation molecular modeling EPR electrochemistry
Article:
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DOI : 10.36106/ijar
Cite This Article:
Dorota Zajac, Jadwiga Soloducho, Tomasz Jarosz, Mieczys?aw ?apkowski, Szczepan Roszak, Push–pull structures of symmetric silane derivatives as a novel hosting materials, Indian Journal of Applied Research,Volume : 7 | Issue : 1 | JANUARY 2017
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Dorota Zajac, Jadwiga Soloducho, Tomasz Jarosz, Mieczys?aw ?apkowski, Szczepan Roszak, Push–pull structures of symmetric silane derivatives as a novel hosting materials, Indian Journal of Applied Research,Volume : 7 | Issue : 1 | JANUARY 2017
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