发布时间：

2025-04-30

论文名称：

Two Conical Intersections Control Luminol Chemiluminescence

发表刊物：

Journal of Chemical Theory and Computation

摘要：

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.

合写作者：

Yue, L.; Liu, Y.-J.

卷号：

15(3)

页面范围：

1798–1805

是否译文：

否

发表时间：

2019-02-04