Synthesis,characterization,electrochemistry,and spectroscopic properties of some anthracenyl functionalized phthalocyanine complexes of ruthenium(II)

The synthesis of single- and double-decked anthracenyl functionalized ruthenium(ii) phthalocyanine complexes has been achieved through a controlled electrophilic aromatic substitution reaction of the free unsubstituted ruthenium(ii) phthalocyanine with preformed 9-bromo-10-(2,3-dimethylacrylic acid)-anthracene and/or 9-bromo-10-(2,3-dimethylacrylic acid)-dianthracene using 1,8-diazabicyclo[5.4.0]undec-7-ene (dbu) as catalyst. the complexes were characterized by ir,uv-vis,fluorescence,1h,13c nmr,and elemental analyses. a dimeric complex (c 3 r ′ ′ r u p c,where r ′ ′ is 9-dianthracenyl-10-(2,3-dimethylacrylic acid),obtained as the major product of the dianthracenyl-substituted ruthenium phthalocyanine complex displays a strong near-infrared visible absorption band wavelength maxima at 1027 nm (ε = 5.47 × 10 3 m-1 cm-1),with an interesting photoluminescent and electroredox active properties. © 2014 adewale o. adeloye and peter a. ajibade.