Time-resolved analysis of intramolecular electronic energy transfer in methylenes-linked naphthalene–anthracene compounds

2000 ◽  
Vol 323 (1-2) ◽  
pp. 117-124 ◽  
Author(s):  
Yoshinobu Nishimura ◽  
Akira Yasuda ◽  
Shammai Speiser ◽  
Iwao Yamazaki
Keyword(s):  
Energy Transfer ◽  
Electronic Energy ◽  
Time Resolved ◽  
Electronic Energy Transfer

Time-resolved analysis of intramolecular electronic energy transfer in methylenes-linked naphthalene–anthracene compounds in solution and in stretched polymer films

2003 ◽  
Vol 102-103 ◽  
pp. 278-282 ◽  
Author(s):  
Shammai Speiser ◽  
Miki Hasegawa ◽  
Shigendo Enomoto ◽  
Toshihiko Hoshi ◽  
Katsuyuki Igarashi ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Polymer Films ◽  
Electronic Energy ◽  
Time Resolved ◽  
Electronic Energy Transfer

The Dynamics of Electronic Energy Transfer in Novel Multiporphyrin Functionalized Dendrimers:  A Time-Resolved Fluorescence Anisotropy Study

2000 ◽  
Vol 104 (12) ◽  
pp. 2596-2606 ◽  
Author(s):  
Kenneth P. Ghiggino ◽  
Joost N. H. Reek ◽  
Maxwell J. Crossley ◽  
Anton W. Bosman ◽  
Albert P. H. J. Schenning ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Fluorescence Anisotropy ◽  
Electronic Energy ◽  
Time Resolved Fluorescence ◽  
Time Resolved ◽  
Electronic Energy Transfer

Sub-picosecond time-resolved intramolecular electronic energy transfer in bichromophoric rhodamine dyes in solution

1988 ◽  
Vol 122 (3) ◽  
pp. 431-442 ◽  
Author(s):  
N.P. Ernsting ◽  
M. Kaschke ◽  
J. Kleinschmidt ◽  
K.H. Drexhage ◽  
V. Huth
Keyword(s):  
Energy Transfer ◽  
Electronic Energy ◽  
Time Resolved ◽  
Electronic Energy Transfer ◽  
Rhodamine Dyes

Electronic Energy Transfer from Excitons Confined in Silicon Nanocrystals to Molecular Oxygen

2003 ◽  
Vol 770 ◽  
Author(s):  
E. Gross ◽  
D. Kovalev ◽  
N. Künzner ◽  
J. Diener ◽  
F. Koch ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Molecular Oxygen ◽  
Elevated Temperatures ◽  
Electronic Energy ◽  
Time Resolved ◽  
Electronic Energy Transfer ◽  
Si Nanocrystals ◽  
Developed Surface ◽  
Quenching Efficiency ◽  
Resonant Electron

AbstractWe report on efficient electronic energy transfer from excitons confined in silicon (Si) nanocrystals to molecular oxygen (MO). The remarkable photosensitizing properties of Si nanocrystal assemblies result from a broad energy spectrum of photoexcited excitons, a long triplet exciton lifetime and a highly developed surface area. Quenching of photoluminescence (PL) of Si nanocrystals by MO physisorbed on their surface is found to be most efficient when the energy of excitons coincides with the triplet-singlet splitting energy of oxygen molecules. Spectroscopic analysis of the quenched PL spectrum evidences that energy transfer is accompanied by multi-phonon emission. From time-resolved measurements the characteristic time of energy transfer is found to be in the range of microseconds. The dependence of PL quenching efficiency on the surface termination of nanocrystals is consistent with short-range resonant electron exchange mechanism of energy transfer. The energy transfer to oxygen molecules in the gaseous phase at elevated temperatures is demonstrated.

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