Time-resolved evanescent wave induced fluorescence spectroscopy. Part 1.—Deviations in the fluorescence lifetime of tetrasulphonated aluminium phthalocyanine at a fused silica/methanol interface

1991 ◽  
Vol 87 (6) ◽  
pp. 825-830 ◽  
Author(s):  
Garry Rumbles ◽  
Alan J. Brown ◽  
David Phillips
Keyword(s):  
Fluorescence Spectroscopy ◽  
Fluorescence Lifetime ◽  
Evanescent Wave ◽  
Fused Silica ◽  
Time Resolved ◽  
Wave Induced ◽  
Aluminium Phthalocyanine

Fluorescence spectroscopy of semiconductor CdTe nanocrystals: preparation effect on photostability

Open Physics ◽  
2011 ◽  
Vol 9 (2) ◽  
Author(s):  
Łukasz Bujak ◽  
Maria Olejnik ◽  
Radek Litvin ◽  
Dawid Piątkowski ◽  
Nicholas Kotov ◽  
...  
Keyword(s):  
Fluorescence Spectroscopy ◽  
Fluorescence Lifetime ◽  
Continuous Wave ◽  
Maximum Energy ◽  
Water Soluble ◽  
Efficient Energy Transfer ◽  
Time Resolved ◽  
Cdte Nanocrystals ◽  
Fluorescence Maximum ◽  
The Stability

AbstractWe report on continuous-wave and time-resolved fluorescence spectroscopy studies of CdTe water-soluble nanocrystals at room temperature. For nanocrystals spread directly on the substrate we observe large variation both in fluorescence maximum energy and fluorescence lifetime. We attribute this to the influence of the surface of the nanocrystals on the stability of excitations in the nanocrystals. As the fluorescence lifetime of the nanocrystals is monitored, we find it increases with time from 6 to 18 ns and then saturates. Placing the nanocrystals in a polymer matrix remarkably improves the photostability and all the above-mentioned effects are diminished. Upon mixing the nanocrystals with gold spherical nanoparticles we observe a decrease of the fluorescence intensity due to efficient energy transfer to the nanoparticles.

Time-resolved evanescent wave induced fluorescence studies of polymer-surface interactions

1994 ◽  
pp. 269-286 ◽  
Author(s):  
G. Rumbles ◽  
D. Bloor ◽  
A.J. Brown ◽  
A.J. DeMello ◽  
B. Crystall ◽  
...  
Keyword(s):  
Evanescent Wave ◽  
Polymer Surface ◽  
Surface Interactions ◽  
Time Resolved ◽  
Fluorescence Studies ◽  
Wave Induced
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