Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/1905
Title: Investigation of the spontaneous emission rate of perylene dye molecules encapsulated into three-dimensional nanofibers via FLIM method
Authors: Açıkgöz, Sabriye
Demir, Mustafa Muammer
Yapaşan, Ece
Kiraz, Alper
Ünal, Ahmet A.
İnci, Mehmet Naci
Keywords: Molecules
Electrospinning
Fluorescence
Monomers
Decay dynamics
Issue Date: Sep-2014
Publisher: Springer Verlag
Source: Açıkgöz, S., Demir, M. M., Yapasan, E., Kiraz, A., Ünal, A. A., and İnci, M. N. (2014). Investigation of the spontaneous emission rate of perylene dye molecules encapsulated into three-dimensional nanofibers via FLIM method. Applied Physics A: Materials Science and Processing, 116(4), 1867-1875. doi:10.1007/s00339-014-8346-y
Abstract: The decay dynamics of perylene dye molecules encapsulated in polymer nanofibers produced by electrospinning of polymethyl methacrylate are investigated using a confocal fluorescence lifetime imaging microscopy technique. Time-resolved experiments show that the fluorescence lifetime of perylene dye molecules is enhanced when the dye molecules are encapsulated in a three-dimensional photonic environment. It is hard to produce a sustainable host with exactly the same dimensions all the time during fabrication to accommodate dye molecules for enhancement of spontaneous emission rate. The electrospinning method allows us to have a control over fiber diameter. It is observed that the wavelength of monomer excitation of perylene dye molecules is too short to cause enhancement within nanofiber photonic environment of 330 nm diameters. However, when these nanofibers are doped with more concentrated perylene, in addition to monomer excitation, an excimer excitation is generated. This causes observation of the Purcell effect in the three-dimensional nanocylindrical photonic fiber geometry.
URI: http://doi.org/10.1007/s00339-014-8346-y
http://hdl.handle.net/11147/1905
ISSN: 0947-8396
0947-8396
1432-0630
Appears in Collections:Materials Science and Engineering / Malzeme Bilimi ve Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Sürdürülebilir Yeşil Kampüs Koleksiyonu / Sustainable Green Campus Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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