Luminescence quenching mechanism for microheterogeneous systems

1991 ◽  
Vol 63 (4) ◽  
pp. 332-336 ◽  
Author(s):  
E. R. Carraway ◽  
J. N. Demas ◽  
B. A. DeGraff
Keyword(s):  
Luminescence Quenching ◽  
Quenching Mechanism ◽  
Microheterogeneous Systems

Synthesis and competitive luminescence quenching mechanism of Ca3Al2O6:Ln3+ (Ln: Dy and Sm) phosphors

2020 ◽  
Vol 132 ◽  
pp. 111010
Author(s):  
M. Bakr ◽  
Ümit H. Kaynar ◽  
M. Ayvacikli ◽  
S. Benourdja ◽  
Y. Karabulut ◽  
...  
Keyword(s):  
Luminescence Quenching ◽  
Quenching Mechanism

Optical properties, luminescence quenching mechanism and radiation hardness of Eu-doped GaN red powder phosphor

2010 ◽  
Vol 45 (3-6) ◽  
pp. 500-502 ◽  
Author(s):  
W. Jadwisienczak ◽  
K. Wisniewski ◽  
M. Spencer ◽  
T. Thomas ◽  
D. Ingram
Keyword(s):  
Optical Properties ◽  
Luminescence Quenching ◽  
Radiation Hardness ◽  
Quenching Mechanism ◽  
Powder Phosphor

scholarly journals Software for simulation of luminescence quenching mechanism: the stern-volmer kinetic model.

Química Nova ◽  
2014 ◽  
Vol 37 (2) ◽  
Author(s):  
Lauro Camargo Dias Júnior ◽  
João Batista Marques Novo
Keyword(s):  
Kinetic Model ◽  
Luminescence Quenching ◽  
Quenching Mechanism

Fluorescence Quenching of Aminodiphenylamines with Chloromethanes

2002 ◽  
Vol 67 (8) ◽  
pp. 1154-1164 ◽  
Author(s):  
Nachiappan Radha ◽  
Meenakshisundaram Swaminathan
Keyword(s):  
Charge Transfer ◽  
Fluorescence Quenching ◽  
Ground State ◽  
Rate Constants ◽  
Quenching Mechanism ◽  
Quenching Rate ◽  
Charge Transfer Interaction ◽  
Electronically Excited ◽  
A Charge

The fluorescence quenching of 2-aminodiphenylamine (2ADPA), 4-aminodiphenylamine (4ADPA) and 4,4'-diaminodiphenylamine (DADPA) with tetrachloromethane, chloroform and dichloromethane have been studied in hexane, dioxane, acetonitrile and methanol as solvents. The quenching rate constants for the process have also been obtained by measuring the lifetimes of the fluorophores. The quenching was found to be dynamic in all cases. For 2ADPA and 4ADPA, the quenching rate constants of CCl4 and CHCl3 depend on the viscosity, whereas in the case of CH2Cl2, kq depends on polarity. The quenching rate constants for DADPA with CCl4 are viscosity-dependent but the quenching with CHCl3 and CH2Cl2 depends on the polarity of the solvents. From the results, the quenching mechanism is explained by the formation of a non-emissive complex involving a charge-transfer interaction between the electronically excited fluorophores and ground-state chloromethanes.

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