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Synthesis, interface (Au/M2Pc2/p-Si), electrochemical and electrocatalytic properties of novel ball-type phthalocyaninesElectronic supplementary information (ESI) available. See DOI: 10.1039/c2dt00041e
The phthalodinitrile derivative ( 3 ) was prepared by the reaction of 4,4′-(octahydro-4,7-methano-5 H -inden-5-ylidene)bisphenol ( 1 ) and 4-nitrophthalonitrile ( 2 ) with dry DMF as the solvent in the presence of the base K 2 CO 3 by the method of nucleophilic substitution of an activated nitro gro...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Online Access: | Get full text |
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| Summary: | The phthalodinitrile derivative (
3
) was prepared by the reaction of 4,4′-(octahydro-4,7-methano-5
H
-inden-5-ylidene)bisphenol (
1
) and 4-nitrophthalonitrile (
2
) with dry DMF as the solvent in the presence of the base K
2
CO
3
by the method of nucleophilic substitution of an activated nitro group in an aromatic ring. The template reaction of
3
with the corresponding metal salts gave the novel bi-nuclear ball-type metallophthalocyanines, MPcs {M = Co (
4
), Cu (
5
), Zn (
6
)}. Newly synthesized compounds were characterized by elemental analysis, UV-vis, FT-IR (ATR), MALDI-TOF mass and
1
H-NMR spectroscopy techniques. The electronic spectra exhibit an intense π → π* transition of characteristic Q and B bands of the Pc core. The dielectric properties and interface between the spin coated films of
4-6
and a p-type silicon substrate have been studied by fabricating metal-insulator-semiconductor capacitors. The results indicated that the frequency dependence of the dielectric permittivity,
′(
ω
), exhibits non-Debye type relaxation for all the temperatures investigated. The ac conductivity results indicated that the conduction mechanism can be explained by a hopping model at low temperatures ( |
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| ISSN: | 1477-9226 1477-9234 |
| DOI: | 10.1039/c2dt00041e |