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Luminescencyjne sensory tlenu, ciśnienia i temperatury

Tsvirko M., Kalota B.

Wiadomości Chemiczne

2011

[Z] 65, 11-12

1069-1097

Optical chemical sensors enlarge the definition of a classical chemical sensor; they present results in two-dimensional (2D) or three-dimensional (3D) aspect. They can determine parameters of micro and macro scale objects without using a lot of electronic equipment. This article is focused on sensors based on porphyrin derivatives and europium complexes, being the most frequently used substances sensitive to oxygen concentration, pressure and temperature changes. Along with the presentation of characteristics of substances employed to sensors’ construction, also the general principle of luminescent sensors operation, composition and operation range of selected mono- and bifunctional luminescent sensors are described; moreover the selected achievements, such as the “traffic light” sensor are shown.

Model of energy transfer and luminescence of europium complexes

Tsvirko M., Venchikov V.

Prace Naukowe. Chemia i Ochrona Środowiska / Akademia im. Jana Długosza w Częstochowie

2005

Vol. 10

71--89

The absolute quantum yield and lifetime of 5Do → 7Fj luminescence of Eu3+ ion in europium complexes with fluorinated β diketones has been measured on excitation of luminescence in the UV So → Si absorption band of the ligand in the temperature range 77-365 K. Based on the analysis of the experimental dependences obtained and solution of the balance equations for stationary and nonstationary cases, we have developed a new approach to the determination of the scheme and rate constants of actual transitions. The rate constants of all processes of electron excitation energy conversion have been determined. The role of the state with charge transfer in these processes has been revealed.