This research demonstrates the synthesis of metal-free phthalocyanines with unique electrical properties, indicating potential applications in electronics.
The new metal-free phthalocyanine 2 and phthalocyaninatometals 3–5 ( M = Ni , Co and Zn ) carrying eight hydroxyethylmercapto groups on peripheral positions have been synthesized from 1,2-bis(hydroxyethylmercapto)-4,5-dicyanobenzene in the presence of a suitable anhydrous metal salt [ NiCl 2, CoCl 2 or Zn ( O 2 CMe )2] or hydroquinone. Zinc (II) phthalocyaninate reacted with palladium(II) salt to form complexes with a phthalocyanine (metal ratio of 1:4). The electrical conductivity of the phthalocyanines 2, 3, 5, 5a are in the semiconductor range.
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Bayir et al. (1997) studied this question.
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