Photooxidation studies with perylenediimides in solution, PVC and sol-gel thin films under concentrated sun light


KARAPIRE C., KUŞ M., Turkmen G. , Trevithick-Sutton C., FOOTE C., ICLI S.

SOLAR ENERGY, vol.78, no.1, pp.5-17, 2005 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 78 Issue: 1
  • Publication Date: 2005
  • Doi Number: 10.1016/j.solener.2004.07.003
  • Title of Journal : SOLAR ENERGY
  • Page Numbers: pp.5-17

Abstract

The singlet oxygen quantum yields (phi(Delta)), LUMO energy levels (eV). photo stabilities under Xe-lamp irradiation of N,N'-di-dodecyl-3,4,9,10-bis(dicarboximide)perylene and N,N'-di-(1-dehydroabiethyl)-3,4,9,10-bis(dicarboximide)perylene, N-DODEPER and ABIPER, respectively, in different host matrices (solution. PVC and sol-gel matrix) are determined. Quenching of their emission by KI is found to give k(q) values of 3.5-37.4 x 10(9)M(-1) s(-1). Quenching is more efficient in solution phase than it is in immobilized phases. phi(Delta)'s of ABIPER and N-DODEPER are in negligible range. 0.090 and 0.095, respectively. The LUMO energy levels determined by cyclic voltammetric studies are 3.65 and 3.49eV for ABIPER and N-DODEPER, respectively. Neither ABIPER nor N-DODEPER showed degradation tendency in sol- gel matrix.