Experimental Test of Bridge-assisted Electron Transfer Models

4 Experimental Test of Bridge-assisted Electron Transfer Models 

For the time being, qualitative or semi-quantitative analysis of the influence of the medium on the electronic factor value rest on the description given by the 

In a first type of systems, redox centers are randomly distributed in a rigid matrix, glass or polymer [73, 74, 75], Donor or acceptor centers are initially created photochemically or by pulse radiolysis, and the study of the return to equilibrium of the system allows the determination of the law k(R) giving the rate variation as a function of the intercenter distance R. The experimental data are well described by an exponential law, which is considered as reflecting an exponential variation of the electronic factor  

Similar experimental studies were carried out on molecules in which the bridge is constituted by conjugated groups [83, 84]. General references on photoinduced intramolecular electron transfers may also be found in two recent reviews [85, 86]. 

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