FORMATION OF RADICAL PAIRS IN THE PHOTOLYSIS OF 2,6-DI(TERT-BUTYL)-1,4-BENZOQUINONEDIAZIDE IN SINGLE CRYSTALS OF 2,6-DI(TERT-BUTYL)-4-METHYLPHENOL

Article abstract of DOI:10.1007/BF00957980

In the photolysis of single crystals of 2,6-di(tert-butyl)-4-methylphenol with the addition of 2,4-di(tert-butyl)-1,4-benzoquinonediazide it was found that they form carbenes and radical pairs with r₁ = 6.0 Angstroem, which are secondary products of the photolysis of the quinonediazide and which form as a result of transfer of a hydrogen atom from the phenol to the carbene.The high thermal stability of these radical pairs makes it possible to use them as two-spin probes.Also found were radical products that are annealed by light with wavelength greater than 560 nm and are hypothetically classified as ion-radical pairs with r_av = 8.9 Angstroem.