Photoinduced triplet-state electron transfer of platinum porphyrin: A one-step direct method for sensing iodide to an unprecedented detection limit

Photoinduced triplet-state electron transfer of platinum porphyrin: A one-step direct method for sensing iodide to an unprecedented detection limit

Photoinduced triplet-state electron transfer of platinum porphyrin: A one-step direct method for sensing iodide to an unprecedented detection limit
Dilshad Masih, Shawkat M. Aly, Erkki Alarousu, and Omar F. Mohammed
J. Mater. Chem. A, 3, 6733-6738, (2015)
Dilshad Masih, Shawkat M. Aly, Erkki Alarousu, and Omar F. Mohammed
Photoinduced triplet-state electron transfer, platinum porphyrin, sensing iodide
2015

Here, we report for the first time a one-step direct method for sensing halides in aqueous solution using phosphorescence quenching of platinum-cationic porphyrin. This method offers an easy, rapid, environmentally friendly, ultra-sensitive (with a previously unattained detection limit of 1 ×10-12 M) and economical method for the determination of iodide. To fully understand the reaction mechanism responsible for the phosphorescence quenching process, we have employed cutting-edge time-resolved laser spectroscopy with broadband capabilities.











DOI: 10.1039/C4TA07033J