Physically sensitised photoreactions

Both the photo-parallel reaction and the consecutive photoreaction, being physically sensitised, form two linear independent steps of the reaction. Their mechanisms and the reduced reaction scheme are listed in Table 3.5. The overall reaction schemes are derived in Appendix 6.6.2. 

The parallel photoreaction according to the details given in Table 3.5 

Mechanisms and reaction schemes of parallel and consecutive photoreactions, physically sensitised 

Reduced reaction scheme and dependencies of the degrees of advancement 

The consecutive photoreaction according to the details given in Table 3.5 and the reaction scheme in Appendix 6.6.2.2 gives the concentrations of the excited intermediates as 

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Survey on different mechanisms of physically sensitised photoreactions... 

Example 3.10 Physically sensitised photoreaction with another partner Another possible scheme for the physically sensitised reaction... 

Start from the molecules B or B", formed according to eqs. (1.19) and (1.20). If these reactions are followed by another chemical reaction, the photoreaction of B is called a (physically) sensitised reaction. On the other hand, if A shows a photoreaction, then the processes (1.19) and (1.20) are competitive reactions. Therefore the molecule B desensitises A and quenches the photoreaction starting at A. The process (1.20) is photochemi-cally very important. It allows the transfer of a precise amount of energy to the molecule B. 

Details for simple non-uniform photoreactions 6.6.2.1 Physically sensitised parallel photoreaction... 

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