Novel triazole substituted phthalocyanines showing high singlet oxygen quantum yields


DEMİRBAŞ Ü. , Bayrak R., DİLBER G. , Mentese E., Akcay H. T.

JOURNAL OF LUMINESCENCE, cilt.206, ss.199-204, 2019 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 206
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1016/j.jlumin.2018.10.051
  • Dergi Adı: JOURNAL OF LUMINESCENCE
  • Sayfa Sayıları: ss.199-204

Özet

In this study, novel triazole peripherally substituted phthalocyanine zinc(II) complexes 3(a-d) were synthesized from four different phthalonitrile derivative and characterized by FT-IR NMR, MALDI-TOF, UV-Vis methods. Aggregation-concentration relations of the compounds 3(a-d) were investigated by UV-Vis spectroscopy. Fluorescence quenching properties of the phthalocyanines 3(a-d) were studied and fluorescence quantum yields were calculated by comparative method. Photodegradation quantum yields of the compound 3(a-d) were calculated. In addition, singlet oxygen quantum yields of the compounds 3(a-d) were measured by comparative method by using 1,3-diphenylisobenzofuran (DPBF) as singlet oxygen quencher. In this work, it has been observed that the synthesized novel phthalocyanines have higher quantum yield values (the range of 0.8-0.85) compared to the Zn (II) complex of unsubstituted phthalocyanine (0.67). Especially the compound 3d substituted tolyl group has the highest singlet oxygen quantum yield (0.85) seen rarely in literature.