Inhibited spontenaous emission of perylene dye molecules embedded in nano-cavities

Ünal, Akın Ahmet (2005) Inhibited spontenaous emission of perylene dye molecules embedded in nano-cavities. [Thesis]

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Abstract

Abstract:{|}The radiative properties of molecules placed in cavities differ fundamentally from the radiative properties in free space. Fluorescence lifetime measurements of perylene dye molecules in polymer nanocavities are experimentally studied using time-correlated single photon counting techniques. The fluorescence lifetime of perylene is measured to be 4.8 ns. Perylene is embedded into polyacrylonitrile nanofibers and polymethylmethacrylate films. Spontaneous emission rate of perylene is inhibited by a factor of up to 2.6. Thus, the enhancement of fluorescence lifetime of perylene from 4.8 ns to 12.36 us for polyacrylonitrile nanofibers and to 12.3 ns for polymethylmethacrylate films is observed.
Item Type: Thesis
Uncontrolled Keywords: Time domain. -- Fluorescence spectroscopy. -- Inhibition. -- Einstein's equation. -- Polymethylmethacrylate. - Spontaneous emission. -- Ployacrylonitrile
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering and Natural Sciences > Academic programs > Electronics
Faculty of Engineering and Natural Sciences
Depositing User: IC-Cataloging
Date Deposited: 15 Apr 2008 15:57
Last Modified: 26 Apr 2022 09:45
URI: https://research.sabanciuniv.edu/id/eprint/8286

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