Aleksander Jabłoński
Aleksander Jabłoński | |
---|---|
Born | 26 February 1898 Woskresenówka, then Russian Empire, now Ukraine |
Died | 9 September 1980 | (aged 82)
Citizenship | Polish |
Alma mater | Kharkiv University University of Warsaw |
Known for | Jablonski diagram |
Scientific career | |
Fields | Physics - photoluminescence |
Institutions | Friedrich-Wilhelms-Universität Nicolaus Copernicus University |
Professor Aleksander Jabłoński (born 26 February 1898 in Woskresenówka, in Ukraine, died 9 September 1980 in Skierniewice, Poland) was a Polish physicist and member of the Polish Academy of Sciences.
Jablonski received a Ph.D. from the University of Warsaw in 1930, writing a thesis On the influence of the change of the wavelength of excitation light on the fluorescence spectra. Then he went to Friedrich-Wilhelms-Universität in Berlin, Germany for two years (1930-31) as a fellow of the Rockefeller Foundation. He was working with Peter Pringsheim at the FWU and later with Otto Stern in Hamburg. In 1934 Jablonski returned to Poland to receive habilitation from the University of Warsaw. The habilitation thesis was On the influence of intermolecular interactions on the absorption and emission of light, the subject he would devote the rest of his life to.
Jabloński was one of the pioneers of molecular photophysics, created the concept of the "luminescent centre" and own theories of concentrational quenching and depolarization of photoluminescence. He was also working on the pressure broadening of the emission spectra lines and was the first person to recognize the analogy between the pressure broadening and molecular spectra. This lead to development of the quantum-mechanical pressure broadening theory.
Fluorescence is schematically illustrated with the classical Jablonski diagram, first proposed by Jablonski in 1935 to describe absorption and emission of light.