Photo Induced Electron Transfer Study of Nile Red in the Presence of Metalsemiconductor Nanoparticals
The significance of this project work is to study the electron transfer reactions occurred between fluorescent dye (Nile red) and semiconductor nanoparticles. The interaction of excited state of Nile red with semiconductors such as Cu-TiO2, Cu-ZnO has been evaluated using absorption and fluorescence measurements.
Fluorescence quenching of Nile red with and without metal dopants on semiconductors have been studied by taking advantage of the effect of dopant (Cu) on semiconductor surface such as TiO2 and ZnO. It suggests that metal dopant on semiconductors reduces the exciton recombination.
Also, the metal doped TiO2 and ZnO give some interesting results in quenching efficiency. From spectroscopic measurements it reveal that the retention time of electrons in the excited state of Nile red noticeably changes when metals ions are doped with semiconductors compared to bare semiconductors. This can be evidenced from Stern-Volmer plot. We believe that, this discrepancy was mainly due to the delocalisation of conduction band electrons from semiconductors to metal dopant.
- Paperback: 52 pages
- Publisher: White Falcon Publishing ; 1 edition (2019)
- Author: MOHAMED JAFFER SADIQ M
- Product Dimensions: 8.5 x 0.2 x 11 INCH