Synthesis and photophysical properties phthalocyanine-pyrene dyads


Özçeşmeci İ. , GELIR A. , Gül A.

DYES AND PIGMENTS, vol.92, no.3, pp.954-960, 2012 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 92 Issue: 3
  • Publication Date: 2012
  • Doi Number: 10.1016/j.dyepig.2011.08.013
  • Title of Journal : DYES AND PIGMENTS
  • Page Numbers: pp.954-960

Abstract

Metal-free, zinc (II) and nickel(II) phthalocyanines (3-5) with a 1-pyrenylmethoxy substituent on each benzo group were prepared from 4-(1-pyrenylmethoxy)phthalonitrile (2). The new compounds have been characterized by elemental analyses, IR, UV/vis, mass and H-1 NMR spectroscopy. The electronic spectra exhibit an intense pi-pi* transition of pyrene unit identity together with characteristic Q and B bands of the phthalocyanine core. The energy transfer to phthalocyanine core and radiative decays of the pyrene emission and phthalocyanine core were examined. Energy transfer through methoxy bridges has been confirmed by ultraviolet irradiation of pyrene antenna leading to red light emission in 3 and 4. (C) 2011 Elsevier Ltd. All rights reserved.