근적외선용 Phthalocyanine Dye의 합성과 특성

Abstract

In 1907, phthalocyanine was found by Braun, in turn, synthesis was made by Linstead and industrialization was settled by Wyler. Phthalocyanines are macrocyclic complexes whose π systems provide their unique chemical and physical properties and owe their dominant positions as blue and green dye to their intense absorption at long wavelengths of the visible spectrum and near infrared. In addition to high stability, they has been investigated in variable fields such as optical data storage, solar cell, sensors and OLED. But owing to extended π system, co-planar association of the phthalocyanine rings cause aggregation and it negatively impact solubility in common organic solvent. In this study, we have solved the problem of insolubility by introducing alkyl and aromatic substituents at phthalocyanine. Substituents cause substantial disruption of the van der Waals and strong lattice forces of the parent phthalocyanine and hence help confer solubility. Also, substituents gave rise to bathochromic shifts of red and near infrared region.