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Processes of absorption, spreading and emitting of light.

ВК4

Вибіркова дисципліна для ОП

First

2022/2023

6 Semester

3

The result of the course is an understanding of the processes of optical absorption, transfer of excitation energy, and their deactivation (fluorescence, phosphorescence, internal conversion, photogeneration of current carriers, photochemical reactions); knowledge of the basic physical quantities and laws that characterize the above processes; approaches to the analytical description of these processes, applied aspects of the photonics of condensed matter.

Full-time form

Knowledge of the basic laws of physics, formulated in the course of general physics and the basics of quantum mechanics. Be able to apply previous knowledge of the courses of mathematical analysis, mathematical physics, basics of vector and tensor analysis, and differential equations to solve theoretical problems of the course. Posses the basic skills in conducting and analyzing the results of experimental work previously obtained in the training laboratories on the general course of physics.

Interaction of photons with the matter in the condensed state. The main stages of photophysical and photochemical processes in environments of different types. Energy diagrams of different types of environments: discrete, energy, and band models. Features of the energy structure of organic and inorganic media. Application of the PEFO model to estimate the position of the electronic energy levels of organic molecules containing P-electronic systems. Quantum transitions in energy systems of different types. Jablonski's scheme for organic media. Selection rules. Absorption processes. Basic characteristics and patterns of absorption processes. Luminescence. Basic characteristics and patterns. Fluorescence and phosphorescence. Transfer of electronic excitations in inorganic and organic media. Mechanisms of elementary acts of energy transfer. Kinetics of deactivation processes. Photochemical and photoelectric processes.

1. Pope M. and Svenberg Ch.Electronic processes in organic materials. -M. Mir.-1985 v.1,2 544 p. 2. V.M.Yashchuk, V.Yu.Kudrya, S.Ya.Shevchenko, L.O. Vretic Introduction to photonics of organic media –K.: VD “Soft-Press”, 2010.-132 (in Ukrainian) 3. V.M.Yashchuk. Migrating Electronic Excitations in *-electron-containing Polymers //Molecular Crystals and liquid Crystals.-1998.-Vol.324.-P.211-222. 4 .V.M.Yashchuk, V.Yu.Kudrya. The spectral properties of DNA and RNA RNA macromolecules at low temperatures: fundamental and applied aspects // Methods Appl. Fluoresc.- 2017.- V.5.- 014001.

Lectures

The results of students' learning activities are evaluated on a 100-point scale. Forms of current control: assessment of homework, written and oral answers to independent tasks. The student can receive a maximum of 40 points for homework, independent assignments, oral answers. The final semester control is conducted in the form of an exam (60 points). The exam ticket includes 2 theoretical questions (20 points each) and a task (20 points).

Ukrainian