INFLUENCE OF MOLECULAR AGGREGATION DECREA SE ON THE COMPLEX-FORMATIONREACTIVITY IN CODEPOSITION OF NICKEL, PHTHALOCYANINE, AND PARAFFIN

A co-deposition of nickel (Ni), phthalocyanine (Pc), and paraffin (Pa) (Ni Pc * Pa) was prepared by evaporating Ni, Pc, and Pa simultaneou sly in vacuum. The visible absorption spectrum of a dilute 1-chloronap hthalene solution of Ni Pc * Pa was compared with that of the co-dep osition of Ni and Pc (N Pc). The nickel phthalocyanine complex (NiPc ) formation increased to about 70% in Ni Pc * Pa, while it was about 50% in Ni Pc. X-Ray diffraction patterns, electron diffraction patt erns, and TEM images showed that the crystallinity and crystallite siz e of the Pc or NiPc component in Ni Pc * Pa decrease greatly compare d with those in Ni Pc or in the deposition of Pc alone. These result s indicated that the aggregation decrease of the Pc component in co-de position was found to be one of the most important factors for the rea ctivity increase for the NiPc formation.