Synthesis and photophysical properties phthalocyanine-pyrene dyads


Özçeşmeci İ., GELIR A., Gül A.

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

  • Publication Type: Article / Article
  • Volume: 92 Issue: 3
  • Publication Date: 2012
  • Doi Number: 10.1016/j.dyepig.2011.08.013
  • Journal Name: DYES AND PIGMENTS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.954-960
  • Istanbul Technical University Affiliated: Yes

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.