Fluorescence spectra and quantum yields of buckminsterfullerene (C60) in room-temperature solutions. No excitation wavelength dependence

1993 ◽  
Vol 115 (14) ◽  
pp. 6378-6381 ◽  
Author(s):  
Ya Ping Sun ◽  
Ping Wang ◽  
Norwood B. Hamilton
Keyword(s):  
Fluorescence Spectra ◽  
Room Temperature ◽  
Wavelength Dependence ◽  
Quantum Yields ◽  
Excitation Wavelength ◽  
Excitation Wavelength Dependence ◽  
Buckminsterfullerene C60

Excitation Wavelength Dependence of ACRYLODAN Fluorescence Spectra in Some Polar Solvents

2002 ◽  
Vol 57 (1-2) ◽  
pp. 94-97
Author(s):  
A. Kawski ◽  
P. Bojarski ◽  
B. Kukliński
Keyword(s):  
Intensity Ratio ◽  
Fluorescence Spectra ◽  
Wavelength Dependence ◽  
Excitation Wavelength ◽  
Polar Solvents ◽  
Excitation Wavelength Dependence

The fluorescence of ACRYLODAN (6-acryloyl-2-dimethylamino-naphtalene) consists of two bands in liquid polar solvents like 1,2-dichloroethane, N,N-dimethylformamide, or acetonitrile. The intensity ratio of long emission (LE) and short emission (SE) bands, LE/SE, depends on the excitation wavelength. For λexe = 420 nm only LE band appears. The observed two fluorescence bands of ACRYLODAN in polar solvents containing trace amounts of water originate from two different components: LE of ACRYLODAN and SE of the product resulting from hydrolysis back to 2-dimethylaminonaphtalenic acid.

Excitation Wavelength Dependence of ACRYLODAN Fluorescence Spectra in Some Polar Solvents

2002 ◽  
Vol 57 (9-10) ◽  
pp. 94-97 ◽  
Author(s):  
A. Kawski ◽  
P. Bojarski ◽  
B. Kukliński
Keyword(s):  
Intensity Ratio ◽  
Fluorescence Spectra ◽  
Wavelength Dependence ◽  
Excitation Wavelength ◽  
Polar Solvents ◽  
Excitation Wavelength Dependence

The fluorescence of ACRYLODAN (6-acryloyl-2-dimethylamino-naphtalene) consists of two bands in liquid polar solvents like 1,2-dichloroethane, N,N-dimethylformamide, or acetonitrile. The intensity ratio of long emission (LE) and short emission (SE) bands, LE/SE, depends on the excitation wavelength. For λexc = 420 nm only LE band appears. The observed two fluorescence bands of ACRYLODAN in polar solvents containing trace amounts of water originate from two different components: LE of ACRYLODAN and SE of the product resulting from hydrolysis back to 2-dimethylaminonaphtalenic acid.

Excitation wavelength dependence of the photoluminescence quantum yield and decay behavior of CdSe/CdS quantum dot/quantum rods with different aspect ratios

2017 ◽  
Vol 19 (19) ◽  
pp. 12509-12516 ◽  
Author(s):  
D. Geißler ◽  
C. Würth ◽  
C. Wolter ◽  
H. Weller ◽  
U. Resch-Genger
Keyword(s):  
Quantum Dot ◽  
Wavelength Dependence ◽  
Quantum Yields ◽  
Excitation Wavelength ◽  
Quantum Rods ◽  
Aspect Ratios ◽  
Decay Times ◽  
Cds Quantum Dot ◽  
Excitation Wavelength Dependence ◽  
Decay Behavior

Our results reveal a strong λexc-dependence of PL quantum yields and decay times, particularly for longer quantum dot-quantum rods with high aspect ratios.

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