The Method for Investigating the Structurization of Water-Organic Mixtures

2nd International Conference on Competitive Materials and Technological Processes

Karitskaya, S.^1

Ural Federal University, Yekaterinburg, Russia^1

关键词: Aqueous-organic solutions;    Dissipative structure;    Electronic excitation energy;    Practical importance;    Solvent composition;    Spatial-temporal structure;    Structurization of water;    Time characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/47/1/012051/pdf
DOI  :  10.1088/1757-899X/47/1/012051

来源: IOP

【 摘 要 】

The investigation of the properties of micellar systems is of great practical importance, since the microheterogeneous structure, in particular, of aqueous-organic solutions can be used to create reaction centers with designed properties, which will make it possible to increase the efficiency of processes associated with the intramolecular conversion of the electronic excitation energy of a molecule. In the present paper, model systems to stimulate chemical reactions are the spatial-temporal structures (STS) formed as a result of photophysical and photochemical reactions, whose time characteristics are highly sensitive to a change in the solvent compositions. The STS evolution processes are slow and the structures formed have macroscopic sizes, which makes the system under consideration a convenient object for experimental studies. The spectral and time characteristics of the spatial-temporal structures luminescing when exposed to UV radiation in aqueous alcohol solutions of anthraquinone are investigated experimentally depending on the volume content of alcohol in a mixture. It is shown that the microheterogeneous structure of aqueous alcohol solutions considerably influences the behavior of the dissipative structures formed.