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Oscillating chemiluminescence reaction in the L‐012–H 2 O 2 –KSCN–CuSO 4 –NaOH system
Author(s) -
Tsuoka Kazuki,
Samejima Nobutoshi,
Toki Erika,
Nakashima Tetsuto,
Abe Rin,
Oyama Takahiro,
Tsukiyama Koichi
Publication year - 2021
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.21524
Subject(s) - chemiluminescence , chemistry , radical , analytical chemistry (journal) , oscillation (cell signaling) , emission intensity , photochemistry , nuclear chemistry , chromatography , organic chemistry , ion , biochemistry
Abstract The oscillating chemiluminescence of the L‐012–H 2 O 2 –KSCN–CuSO 4 –NaOH system was investigated both experimentally and numerically. The oscillation behavior could be classified into two patterns: (i) intense sharp spike‐like emission of a very short duration and (ii) slowly varying emission with a slow rise and a faster fall between the adjacent spike‐like emissions. The concentrations of OH·, HO 2 ·, ·OS(O)CN, and SO 3 · − were simulated using the Runge–Kutta method. Comparing the time‐dependent emission intensities with calculated radical concentrations, we concluded that the pulsed sharp emission and slowly varying chemiluminescence were caused due to the reaction of L‐012 with ·OS(O)CN and HO 2 ·, respectively. The OH· radicals did not participate in the chemiluminescence.