The study of application of nonlinear dynamics on green chemistry

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This program will investigate the kinetics and mechanism of the oxidation of several organic reagents which can be employed to (1) reduce dyestuffs, (2) form novel photochemical oscillators, and (3) prepare modified electrodes. Both illuminated and non-illuminated systems will be studied in order to devise a green process in which the reducing agent can be re-generated through photoreduction. Research will be pursued from the following three directions: (1) Reaction dynamics and mechanism in homogeneous systems, (2) pattern formation in reaction-diffusion media, and (3) the construction of modified electrodes. For kinetic measurements, reactions will be followed by a Pt or an ion selective electrode, coupled with a reference electrode. Spectroscopic method will also be employed to follow and analyze the reaction. State-of-the-art instruments such as NMR, HPLC, and mass spectrometry will be employed to determine and quantify the reaction products, which will in turn provide guidance to our modeling. In addition to the long term impacts on the development of new green technology for dyeing industry and chemical analysis, the achievement of a new class of photo-controlled chemical oscillators will also greatly facilitate studies of perturbed nonlinear spatiotemporal dynamics, a subject which has recently attracted increasing attention due to its potential applications in catalysis, biology, information processing, etc.