Representative Kinetic Data on Reactions of Photoinitiator Free Radicals

2 Representative Kinetic Data on Reactions of Photoinitiator Free Radicals 

In a series of reactions of phosphinoyl free radicals with different HFC ap a rate constant of addition A add to NBA decreases with a decrease in ap Such a correlation 

FIGURE 12.10 TR-EPR spectra produced by photolysis of IRG651 in the presence of ( N-0- N) in acetonitrile, (a) 2D spectrum, (b) ID spectrum at 1 ls after the laser flash (solid line) after subtraction of the spectmm of r of IRG651 contribution and its simulation (dotted line), and (c) relative contributions of each of three polarized species into the simulation spectrum, see the text for discussion.  

FIGURE 12.11 Transient absorption spectrum obtained under laser flash photolysis of TPO in -hexane. The spectrum is ascribed to phospinoyl radical. The inset demonstrates a transient decay measured at = 330nm.  

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