Work

Competitive photoenolization in the photochemistry of the free radical photoinitiator OXE02

Year: 2026

Type: article

Abstract: -methylbenzophenone moiety raises the possibility of a competing Norrish type II photoenolization pathway. In this study, we investigated whether photoenolization competes with the primary fragmentation process. The results of quantum yield measurements and transient absorbance spectroscopy provide strong evidence that photoenolization is a competing photochemical pathway, which can decrease the efficiency of radical generation and should therefore be considered when evaluating the photochemical performance of OXE02. While it has been reported that OXE02 shows anomalous photochemical behavior, in our hands OXE02 appears to follow the fundamental paradigms of photochemistry without any problem.

Source: RSC Advances

DOI: 10.1039/d6ra07302f

Authors: Saba Didarataee, Juan C. Scaiano

Institution: University of Ottawa

Language: English

Topic: Photopolymerization techniques and applications

Subfield: Organic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,042

Funders: Canada Foundation for Innovation, Natural Sciences and Engineering Research Council of Canada