Fluorescence of complex molecules in crossed electron and molecular beams

Baranov, I. Yu.; Burshtein, M. L.; Gruzinskii, V. V.; Kaputerko, M. N.; Prosikhin, V. P.

doi:10.1007/bf02606490

Cited by 1 publication

(1 citation statement)

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“…The fluorescence kinetics of free organic molecules has been little studied. Anthracene vapor fluorescence [38], which arises in irradiation by low-energy monochromatic electrons, decays exponentially. A change in the electron energy from 3.5 eV to 38 eV led to a decrease in the lifetime from 10 AE 3 ns (3.5 eV) to 6X7 AE 0X4 ns (38 eV), which is in good agreement with optical excitation data, where changing l exc from 369 nm to 216 nm reduced the fluorescence duration from 6.4 ns to 4 ns.…”

Section: Fluorescence Kineticsmentioning

confidence: 99%

Spectroscopy of the interaction of a low-energy electron beam with organic luminescent molecules

Kukhta

Kazakov

2022

Phys. Usp.

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We present a brief review of the results of spectroscopic studies of the interaction of a beam of low-energy monokinetic tunable-energy electrons with organic luminescent molecules. Data are presented on elastic scattering, the excitation of vibrational and electronic transitions, luminescence properties, and the formation of positive and negative ions for a number of molecules. It is shown that the passage of electrons through the gaseous and thin-film phases of organic samples is close in nature. For all processes, except the excitation of triplet transitions and the formation of negative ions, the dipole interaction prevails, even in the near-threshold region. The results of the conducted research will be useful for understanding the conversion of electron energy by organic molecules in electronics, where the direct study of elementary processes is very difficult, as well as in biology and plasma chemistry.

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Section: Fluorescence Kineticsmentioning

confidence: 99%