Abstract
AbstractA series of thin films of an axially substituted silicon phthalocyanine, PcSi(OsiCH3C6H5OH)2, were made by spin coating and vacuum evaporation techniques. Electronics spectra of these films exhibit a bathochromic shift of the Q band compared with that of a chloroform solution. This bathochromic shift is ascribed to the formation of aggregates in films as seen by the scanning electron micrographs of them. Neither electronic nor vibrational spectra provide evidence for the formation of cofacial dimers which are usually found in evaporated films of axially substituted silicon phthalocyanines. The evaporated films that are redissolved in chloroform exhibit the same electronic and proton NMR spectra as the fresh solutions. The Raman and infrared spectra suggest that both evaporated and spin‐coated films possess similar molecular structures.
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