Determination of the excited-state lifetimes of the tryptophan residues in barnase, via multifrequency phase fluorometry of tryptophan mutants

Biochemistry ◽  
1992 ◽  
Vol 31 (3) ◽  
pp. 711-716 ◽  
Author(s):  
K. Willaert ◽  
R. Loewenthal ◽  
J. Sancho ◽  
M. Froeyen ◽  
A. Fersht ◽  
...  
Keyword(s):  
Excited State ◽  
Phase Fluorometry ◽  
Tryptophan Residues ◽  
Excited State Lifetimes

Determination of Atomic and Molecular Excited-State Lifetimes Using an Optoelectronic Cross-Correlation Method

1982 ◽  
Vol 36 (2) ◽  
pp. 92-99 ◽  
Author(s):  
R. E. Russo ◽  
G. M. Hieftje
Keyword(s):  
Excited State ◽  
Cross Sections ◽  
Cross Correlation ◽  
Correlation Method ◽  
Correlation Technique ◽  
Atomic Fluorescence ◽  
Excited State Lifetimes ◽  
Cross Correlation Technique ◽  
Molecular Excited State

A new optoelectronic cross-correlation technique has been used to measure excited-state lifetimes of several organic fluorophores in solution and of sodium atoms in both air-acetylene and methane-air flames. Capable of time resolution in the picosecond range, the new method was validated by the excellent agreement between measured and literature values for fluorescence lifetimes of the organic species. Lifetime values for Na atoms in flames are among the most precise ever reported and agree closely with values calculated from the known flame gas composition, temperature, and the quenching cross-sections of the two dominant quenching species in the flame, N2 and CO2. From the Na excited-state lifetimes (0.72 ± 0.07 ns for air-acetylene and 0.48 ± 0.08 ns for methane-air flames), quantum efficiencies for atomic fluorescence were calculated.

Nanomolar Determination of Nitrofurans in Water via Excited-State Inter-Ligand Proton Transfer

2021 ◽  
pp. 338905
Author(s):  
Xiaojun Zhang ◽  
Lina Zhao ◽  
Xiaomeng Jin ◽  
Zijun Zhang ◽  
Yuxin Li
Keyword(s):  
Excited State ◽  
Proton Transfer

Studies of Glutamate Dehydrogenase: Chemical Modification and Quantitative Determination of Tryptophan Residues

1974 ◽  
Vol 43 (2) ◽  
pp. 319-325 ◽  
Author(s):  
Veit Witzemann ◽  
Rudolf Koberstein ◽  
Horst Sund ◽  
Ihab Rasched ◽  
Hans Jornvall ◽  
...  
Keyword(s):  
Chemical Modification ◽  
Quantitative Determination ◽  
Glutamate Dehydrogenase ◽  
Tryptophan Residues

Ultrafast Spectroscopy of Arylchlorodiazirines: Hammett Correlations of Excited State Lifetimes

2009 ◽  
Vol 131 (46) ◽  
pp. 16652-16653 ◽  
Author(s):  
Yunlong Zhang ◽  
Lei Wang ◽  
Robert A. Moss ◽  
Matthew S. Platz
Keyword(s):  
Excited State ◽  
Ultrafast Spectroscopy ◽  
Excited State Lifetimes

Steric Effects in the Electronic Spectra of the 3,5-Diarylaminobenzene Derivatives

1986 ◽  
Vol 41 (11) ◽  
pp. 1311-1314 ◽  
Author(s):  
A. Balter ◽  
W. Nowak ◽  
P. Milart ◽  
J. Sepioł
Keyword(s):  
Excited State ◽  
Electronic Spectra ◽  
Fluorescence Properties ◽  
Steric Effects ◽  
Quantum Yields ◽  
Spectroscopic Behaviour ◽  
Fluorescence Quantum Yields ◽  
Excited State Lifetimes ◽  
Methyl Phenyl

Absorption and fluorescence properties, excited state lifetimes and fluorescence quantum yields were determined for a series of 3,5-diarylaminobenzene derivatives in solvents of different polarities. The role of the nitrile, methyl, phenyl and naphthyl substituents is discussed. Especially the steric effects on the spectroscopic behaviour of the investigated molecules are studied.

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