Abstract
The photochemical behavior of the two isomeric endoperoxides (9,10-PMO2 and 1 ,4-PMO2) of 1,4-dimethyl-9,lO-diphenylanthracene was found to differ in their kinetics and reaction efficiencies. Consistent with the work of Rigaudy et al. and Brauer et al. on a related endoperoxide we find that the generation of IO2 is wavelength dependent, occurring from upper excited singlet states of the endoperoxide, whereas bond cleavage of the 0-0 endoperoxide bond occurs principally from the lowest excited singlet and triplet states. Results of picosecond kinetics and absolute quantum yield measurements are discussed in terms of various concerted and nonconcerted mechanisms for the formation of IO2 and the anthracene fragment.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
