Abstract
The syntheses and photophysical properties of metallophthalocyanines containing Mg 2+ and Al 3+ as central metal ions and their unmetallated derivative (complexes 3-8) tetra- substituted at the non-peripheral (α) and peripheral (β) positions with 2-mercaptopyridine are reported. The trends in triplet and fluorescence quantum yields are described for these compounds. The complexes exhibited relatively high triplet quantum yields (Φ T) ranging from 0.33 to 0.54 and fluorescence quantum yields (Φ F) ranging from 0.02 to 0.29. Triplet state lifetimes of the complexes were long ranging from 120 to 460 μs, indicating a potential use of these complexes as photosensitizers.
| Original language | English |
|---|---|
| Pages (from-to) | 407-413 |
| Number of pages | 7 |
| Journal | Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy |
| Volume | 95 |
| DOIs | |
| Publication status | Published - Sept 2012 |
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 as well as Rhodes University. YA thanks Istanbul Technical University, DPT and TUBITAK for leave. MI thanks UNAAB for leave.
| Funders | Funder number |
|---|---|
| National Research Foundation | |
| Rhodes University | |
| Department of Science and Technology, Ministry of Science and Technology, India |
Keywords
- 2-mercaptopyridine
- Fluorescence lifetime
- Metallophthalocyanine
- Triplet quantum yield