Synthesis and electrochemistry of tetrakis(7-coumarinthio-4-methyl)-phthalocyanines, and preparation of their cinnamic acid and sodium cinnamate derivatives

Esenpinar A. A. , ÖZKAYA A. R. , Bulut M.

POLYHEDRON, cilt.28, sa.1, ss.33-42, 2009 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 28 Konu: 1
  • Basım Tarihi: 2009
  • Doi Numarası: 10.1016/j.poly.2008.09.021
  • Dergi Adı: POLYHEDRON
  • Sayfa Sayıları: ss.33-42


Novel water soluble free-base, Zn(II) and Co(II) metallo phthalocyanines with four cinnamic acid moieties were prepared from the corresponding tetrakis(7-coumarinthio-4-methyl)-phthalocyanine by the lactone ring opening reaction. The new compounds were purified and characterized by elemental analysis, H-1 NMR, Maldi-TOF, FT-IR and UV-Vis spectral data. Cyclic and differential pulse voltammetry and in situ spectroelectrochemistry of the 2,9,16,23-tetrakis(7-coumarinthio-4-methyl) substituted free-base 1a, Zn(II) 1b and Co(II) 1c phthalocyanines, employed as the starting compounds have been studied. This allowed us not only to identify metal- and phthalocyanine ring-based redox processes of the complexes, but also the effect of aggregation on these processes. (C) 2008 Elsevier Ltd. All rights reserved.