Kinetic Resonance Raman Spectroscopy of the Briggs–Rauscher Oscillator

Abstract

Complementary colours of laser light can be used in the investigation of chemical oscillations, such as the Briggs–Rauscher reaction, by kinetic resonance Raman spectroscopy. Samples are excited with red laser light and show an oscillatory dark state which switches to the oxidised steady state during illumination by green laser light (see picture).

Modulation of spatiotemporal dynamics in the bromate–sulfite–ferrocyanide reaction system by visible light

“…13 By virtue of the process, photophobic and phototropic movements of a self-oscillating gel hosting the photosensitive BZ reaction were designed to approach its favorable environments spontaneously. 14,15 In another case, the photosensitive dissociation of molecular iodine was utilized in the chlorine dioxideiodine-malonic acid (CDIMA) reaction, Briggs-Rauscher reaction, and Bray-Liebhafsky reaction, leading to the cessation or promotion of oscillations, [16][17][18] and pattern structures modulation 11,19,20 under the forcing of light illumination.…”