A peroxide-bridged imidazole dimer formed from a photochromic naphthalene-bridged imidazole dimer

Literature Information

Publication Date 2012-03-01
DOI 10.1039/C2CP40239D
Impact Factor 3.676
Authors

Sayaka Hatano


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Abstract

2,4,5-Triphenylimidazole (lophine) is known as the first chemiluminescence substrate, and its oxidized derivative, the 2,4,5-triphenylimidazolyl radical, corresponds to the coloured species in the photochromic reaction of hexaarylbiimidazole (HABI). We report the first direct observation of the O2 adduct of the imidazolyl radical that forms the end-on peroxide-bridged imidazole dimer. The ring-opening reaction of the peroxide-bridged imidazole dimer leading to the formation of an N-benzoylbenzamidine derivative supports the presence of the 4,5-epidioxide of lophine as a reaction intermediate of its chemiluminescence.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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