Novel homoleptic, dimeric zinc(II) phthalocyanines as gate dielectric for OFET device

•An unsymmetrical phthalocyanine with t-BuCH3 group has been prepared.•A novel benzene-1,4-diyldimethanimine bridged dimeric zinc-phthalocyanine groups was synthesized.•The potential of these compounds as gate dielectric were investigated by fabricating bottom gate top contact OFET. A novel multicom...

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Bibliographic Details
Published in:Synthetic metals 2017-08, Vol.230, p.7-11
Main Authors: Karaoğlan, Gülnur Keser, Gümrükçü, Gülşah, Gördük, Semih, Can, Nursel, Gül, Ahmet
Format: Article
Language:English
Subjects:
Benzene
Chemical synthesis
Coated electrodes
Dielectric
Dielectrics
Dimeric
Electrodes
Leakage current
NMR
Nuclear magnetic resonance
Ofet
Phthalocyanine
Synthesis
Zinc
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Summary:•An unsymmetrical phthalocyanine with t-BuCH3 group has been prepared.•A novel benzene-1,4-diyldimethanimine bridged dimeric zinc-phthalocyanine groups was synthesized.•The potential of these compounds as gate dielectric were investigated by fabricating bottom gate top contact OFET. A novel multicomponent system consisting of benzene-1,4-diyldimethanimine bridged dimeric zinc-phthalocyanine groups was synthesized. Firstly, a novel unsymmetrically nitro and 2,4-di-tert-butylphenoxy groups substituted zinc (II) phthalocyanine was synthesized and then nitro group was reduced to amino functional group. All newly synthesized compounds were characterized by UV–Vis, FTIR, 1H-NMR, MALDI-TOF MS and elemental analysis spectral data. The potential of these compounds as gate dielectric were investigated by fabricating bottom gate top contact OFET using poly 3-hexylthiophene-2,5-diyl as active layer. Field effect mobility values of 3.2×10−4cm2/Vs was obtained when using ITO-coated glass as gate electrode. It was found that the density of leakage current was about 2nA/cm2 at 5V. The capacitance density of 11.8nF/cm2 was achieved at a frequency of 5Hz with slightly smaller values at higher frequency.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2017.04.019