Abstract
The synthesis of ball-type dinuclear Zn(II) phthalocyanine containing four 4,4′-(9H-fluorene-9,9-diyl)diphenol substituents at the non-peripheral position is presented. The structure of the synthesized compound was characterized using elemental analyzes, and UV-vis, FT-IR, 1H NMR and mass spectroscopies. The ΦF value was 0.16 and ΦT value was 0.72. The complex showed reasonably long triplet lifetimes with τT 7210 μs in DMSO. The frequency and temperature dependence of the dielectric properties of ZnPc were also investigated in the frequency range of 40-105 Hz and in the temperature range of 300-440 °K. It has been observed that both dielectric constant ε′ and dielectric loss ε″ decrease with the rise in frequency as they increase with the rise in temperature. The decrease in ε′ with increasing frequency is attributed to the fact that as the frequency increases, the polarizability contribution from orientation sources decreases and finally disappears.
| Original language | English |
|---|---|
| Pages (from-to) | 826-832 |
| Number of pages | 7 |
| Journal | Journal of Porphyrins and Phthalocyanines |
| Volume | 16 |
| Issue number | 7-8 |
| DOIs | |
| Publication status | Published - 2012 |
| Externally published | Yes |
Funding
This work was supported by the Department of Science and Technology (DST) and National Research Foundation (NRF), South Africa through DST/NRF South African Research Chairs Initiative for Professor of Medicinal Chemistry and Nanotechnology and Rhodes University.
| Funders | Funder number |
|---|---|
| DST/NRF | |
| National Research Foundation | |
| Rhodes University | |
| Department of Science and Technology, Government of Kerala |
Keywords
- dielectric properties
- non-peripheral phthalocyanine
- photodynamic therapy
- triplet quantum yield
- Zn ball-type phthalocyanine