Metal-enhanced fluorescence exciplex emission.
In this letter, we report the first observation of metal-enhanced exciplex fluorescence, observed from anthracene in the presence of diethylaniline. Anthracene in the presence of diethylaniline in close proximity to Silver Island Films (SIFs) shows enhanced monomer and exciplex emission as compared to a non-silvered control sample containing no silver nanoparticles. Our findings suggest two complementary methods for the enhancement: (i) surface plasmons can radiate coupled monomer and exciplex fluorescence efficiently, and (ii) enhanced absorption (enhanced electric near-field) further facilitates enhanced emission. Our exciplex studies help us to further understand the complex photophysics of the metal-enhanced fluorescence technology.
Institute of Fluorescence and Department of Chemistry and Biochemistry, University of Maryland Baltimore County, 701 East Pratt Street, Baltimore, MD 21202, USA.
Yongxia
Y
Zhang
Buddha L
BL
Mali
Chris D
CD
Geddes
D000814:Aniline Compounds / Q000737:chemistry*; D000873:Anthracenes / Q000737:chemistry*; D005453:Fluorescence; D012834:Silver / Q000737:chemistry*
D000814:Aniline Compounds; D000873:Anthracenes; D012834:Silver; C034020:anthracene; C085691:2,6-diethylaniline