Estimation of Electron Transfer Rate Constant from Static (Optical and Thermodynamic) Measurements:  A Study of Ru(NH3)5pz2++ Fe(CN)63-⇌ Ru(NH3)5pz3++ Fe(CN)64-Electron Transfer Reactions

1999 ◽  
Vol 38 (8) ◽  
pp. 1780-1784 ◽  
Author(s):  
F. Sánchez ◽  
P. Pérez-Tejeda ◽  
M. López-López
Keyword(s):  
Electron Transfer ◽  
Rate Constant ◽  
Transfer Rate ◽  
Transfer Reactions ◽  
Electron Transfer Rate ◽  
Electron Transfer Reactions ◽  
Transfer Rate Constant ◽  
Electron Transfer Rate Constant ◽  
Thermodynamic Measurements

Investigate and Calculation Electron Transfer Rate Constant in the N749 Sensitized Dye Contact to ZnSe Semiconductor

2021 ◽  
Vol 19 (11) ◽  
pp. 102-107
Author(s):  
Mohammed Kamilharmoosh ◽  
Mohsin A. Hassooni ◽  
Hadi J.M. Al-Agealy
Keyword(s):  
Electron Transfer ◽  
Rate Constant ◽  
Transfer Rate ◽  
Energy Levels ◽  
Electron Transfer Rate ◽  
Semiconductor Interface ◽  
Transfer Rate Constant ◽  
Electron Transfer Rate Constant ◽  
Electron Transfer Processes ◽  
Polarity Of Solvents

The dye–semiconductor interface between N749 sensitized and zinc semiconductor (ZnSe) has been investigated and studied according to quantum transition theory with focusing on the electron transfer processes from the N749 sensitized (donor) to the ZnSe semiconductor (acceptor). The electron transfer rate constant and the orientation energy were studied and evaluated depended on the polarity of solvents according to refractive index and dielectric constant coefficient of solvents and ZnSe semiconductor. Attention focusing on the influence of orientation energies on the behavior of electron transfer rate constant. Differentdata of rate constant was discussion with orientation energy and effective driving energy for N749-ZnSe system. Furthermore, the electron transfer rate constant is increased with less orientation energy at less effective driving energy while the electron transfer rate constant increased with large orientation energy with large effective driving energy, as seen as the electron transfer rate reach to 1.3109 × 1011 with less orientation energy has 0.188708eV at effective driving energy E=0.22eV comparing the rate reach to 9.7207× 10−96 with driving energy E=1.89eV and same orientation energy. In general, the electron transfer rate constant increases with increases the coupling coefficient of system, its indicate that alignment of energy levels are very good between N749 sensitized metal and ZnSe semiconductor.

Sign in / Sign up

Export Citation Format

Share Document