Novel fully-BODIPY functionalized cyclotetraphosphazene photosensitizers having high singlet oxygen quantum yields

Senkuytu E., Ecik E.

Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, vol.182, pp.26-31, 2017 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 182
  • Publication Date: 2017
  • Doi Number: 10.1016/j.saa.2017.03.065
  • Journal Name: Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.26-31
  • Keywords: Cyclotetraphosphazene, BODIPY, Photosensitizers, NMR, TRIPLET EXCITED-STATE, PHOTOPHYSICAL PROPERTIES, PHOTODYNAMIC THERAPY, CYCLOTRIPHOSPHAZENE, EFFICIENT, PHOSPHAZENES, GENERATION, PLATFORMS
  • Ataturk University Affiliated: No

Abstract

Novel fully-BODIPY functionalized dendrimeric cyclotetraphosphazenes (FBCP 1 and 2) have been synthesized and characterized by H-1, C-13 and P-31 NMR spectroscopies. The photophysical and photochemical properties of FBCP 1 and 2 are investigated in dichloromethane solution. The effectiveness of singlet oxygen generation was measured for FBCP 1 and 2 by UV-Vis spectra monitoring of the solution of 1,3-diphenylisobenzofuran (DPBF), which is, a well-known trapping molecule used in detection of singlet oxygen. FBCP 1 and 2 show high molar extinction coefficients in the NIR region, good singlet oxygen quantum yields and appropriate photo degradation. The data presented in the work indicate that the dendrimeric cyclotetraphosphazenes are effective singlet oxygen photosensitizers that might be used for various areas of applications such as photodynamic therapy and photocatalysis. (C) 2017 Elsevier B.V. All rights reserved.