title   
  

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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Official URL: http://risc01.sabanciuniv.edu/record=b1143163 (Table of Contents)

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
ID Code:8286
Deposited By:IC-Cataloging
Deposited On:15 Apr 2008 15:57
Last Modified:27 Dec 2008 12:58

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