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- W2911458869 abstract "Luminol, the first discovered and man-made effective chemiluminescence (CL) system, is the best known and one of the most widely used CL materials. The chemiluminescent process of the luminol CL has not yet been fully elucidated, although the decomposition of 1,2-dioxane-3,6-dione dianion (CP2–) is verified to be the key step to produce light emitter. However, the mechanisms of the CP2– decomposition and the effective singlet chemiexcitation are totally unknown, which is the outstanding obstacle to comprehending luminol CL. In the present work, by means of the state-of-the-art multireference computation and the nonadiabatic molecular dynamics (NAMD) simulation, the decomposition mechanism of CP2– is clearly revealed. A stepwise single electron transfer from the aminophthaloyl to the O–O bond initiates the decomposition of CP2–, and the light emitter is produced via the two crossings of the potential energy surfaces of the ground state (S0) and the first singlet excited state (S1). The NAMD simulated quantum yield of the light emitter demonstrates that the located two conical intersections control an effective nonadiabatic pathway in luminol CL. The proposed mechanism of “two conical intersections” is suitable not only to luminol but also to other CL materials with cyclic peroxide as the chemical energy provider." @default.
- W2911458869 created "2019-02-21" @default.
- W2911458869 creator A5074303262 @default.
- W2911458869 creator A5082557734 @default.
- W2911458869 date "2019-02-04" @default.
- W2911458869 modified "2023-10-18" @default.
- W2911458869 title "Two Conical Intersections Control Luminol Chemiluminescence" @default.
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- W2911458869 doi "https://doi.org/10.1021/acs.jctc.8b01114" @default.
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