Synthesis, photophysical and photochemical properties of highly soluble phthalocyanines substituted with four 3,5-dimethylpyrazole-1-methoxy groups


Bayrak R., AKÇAY H. T. , Durmus M., DEĞİRMENCİOĞLU İ.

JOURNAL OF ORGANOMETALLIC CHEMISTRY, vol.696, no.23, pp.3807-3815, 2011 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 696 Issue: 23
  • Publication Date: 2011
  • Doi Number: 10.1016/j.jorganchem.2011.09.002
  • Title of Journal : JOURNAL OF ORGANOMETALLIC CHEMISTRY
  • Page Numbers: pp.3807-3815

Abstract

The synthesis and characterization of new peripherally tetra-3,5-dimethylpyrazole-1-methoxy substituted metal-free (4), zinc (5), nickel (6), cobalt (7), copper (8) and lead (9) phthalocyanines are described for the first time in this study. The photophysical (fluorescence quantum yields and fluorescence lifetimes) and photochemical (photodegradation and singlet oxygen quantum yields) properties of metal-free (4), zinc (5) and lead (9) phthalocyanines are studied in dimethylsulfoxide (DMSO). Nickel (6), cobalt (7) and copper (8) phthalocyanines (6-8) did not evaluate for this purpose due to transition metal and paramagnetic behavior of central metals in the phthalocyanine cavity. The fluorescence quenching behavior of metal-free (4), zinc (5) and lead (9) phthalocyanines are also investigated. The fluorescence emissions of these phthalocyanines are effectively quenched by 1,4-benzoquinone in DMSO. (C) 2011 Elsevier B.V. All rights reserved.