Synthesis, Spectroscopic, and Electrochemical Properties of Homoleptic Bis(substituted-phthalocyaninato) Cerium(IV) Complexes

摘要

The sandwich-type double-decker homoleptic phthalocyaninato rare earth complexes RE(Pc)_2 have been intensively studied over several decades as prospective molecular semi-conductor, molecular magnetic, electrochromic and NLO materials. More recently, the bisphthalocyaninato rare earth complexes in which long alkyl or crown ether substitutents are introduced onto the Pc rings started to arouse research interest as novel forms of mesogenic liquid crystals or potential iono-electronic materials. Within the lanthanide series cerium possesses an exceptional position as there is a low lying redox couple Ce~(3+)/Ce~(4+). which should give specific affection to the interaction between the two Pc ring in the molecules of double-decker when it is inserted into the phthalocyaninato double-decker.