Concentration - dependent fluorescence properties of Nile Red in TiO2 based thin films
Anna Synak , Piotr Bojarski , Beata Grobelna , Leszek Kułak , Elżbieta Szczepańska , Michał Mońka
AbstractThin films of Nile Red in TiO2 matrix were prepared with the sol–gel method for different dye concentrations. It was found that at high dye concentration fluorescence and absorption spectra as well as fluorescence intensity decay and time-resolved fluorescence spectra exhibit strong changes. In particular, fluorescence spectra profiles are strongly shifted to the red in a way typical of aggregate formation. Fluorescence intensity decays much faster with increase in concentration in the monomer band due to Nile Red aggregate formation and excitation energy trapping. Time-resolved fluorescence spectra exhibit strong evolution. Clear formation of aggregate band at the red part of time-resolved emission spectra was observed.
|Journal series||Journal of Molecular Liquids, ISSN 0167-7322, e-ISSN 1873-3166, (N/A 100 pkt)|
|Publication size in sheets||0.50|
|ASJC Classification||; ; ; ; ;|
|Score||= 100.0, 20-07-2020, ArticleFromJournal|
|Publication indicators||= 0.000; : 2018 = 1.275; : 2018 = 4.561 (2) - 2018=4.136 (5)|
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