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Fluorescence quenching of tryptophan by trifluoroacetamide
Biochimica et Biophysica Acta (BBA) - General Subjects, 1984Trifluoroacetamide was found to be a good quencher of tryptophan fluorescence, and the quenching was shown to proceed via both a dynamic and a static process. The respective quenching constants were determined by the measurement of the decrease of the fluorescence lifetime in the presence of the quencher.
Midoux, Patrick +3 more
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Fluorescence quenching of acridines by strandin
Archives of Biochemistry and Biophysics, 1961Abstract The interaction of four acridine compounds with strandin has been studied, with special attention being directed to acriflavine. In all cases fluorescence quenching by strandin occurs, the nature of the quenching curve depending on the dye involved.
A F, HARRIS, A, SAIFER, S K, WEINTRAUB
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Steric effect on fluorescence quenching
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2005In this communication we have reported the steric effect on the fluorescence quenching rate constants of the electron transfer (ET) process. We have done a comparative study using donor (D)-acceptor (A) systems with different exergonicity (-deltaG(f)). Different carbazole derivatives (CZ): 1,4-dicyanobenzene (DCB) systems (-deltaG(f) = 0.7-0.8 eV) were
Suchandra, Chatterjee +3 more
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Magnetic quenching of fluorescence
Chemical Physics Letters, 1977Abstract The direct and indirect mechanisms for the magnetic enhancement of radiationless decay processes are described, and used to account for the experimental observations of the magnetic quenching of fluorescence from carbon disulphide, glyoxal, and nitrogen dioxide.
P.W. Atkins, Paul.R. Stannard
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Fluorescence Quenching by Redox Molecular Pumping
Journal of the American Chemical Society, 2022Artificial molecular pumps (AMPs), inspired by the active cellular transport exhibited in biological systems, enable cargoes to undergo unidirectional motion, courtesy of molecular ratchet mechanisms in the presence of energy sources. Significant progress has been achieved, using alternatively radical interactions and Coulombic repulsive forces to ...
Li, Xuesong +11 more
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Fluorescence quenching in Nd:YAG
Applied physics, 1973We show that quenching of the Nd fluorescence is in principle not associated with the Nd3+ ion but with the host. The process is due to near-field electric dipole interaction between Nd pairs, and cross relaxation via the4I1 5/2 manifold. We present for the first time the complete fluorescence spectrum and level scheme of Nd∶YAG, and find that Nd∶YAG ...
H. G. Danielmeyer, M. Blätte, P. Balmer
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The Journal of Chemical Physics, 1966
Quenching constants for NO2 fluorescence were obtained for 13 different inert gases. Quenching cross sections range from 1/25 to 1/2 of gas kinetic and increase with increasing molecular complexity, and dipole moment. No unusual resonance effect for quenching by ground-state NO2 was found.
G. H. Myers, D. M. Silver, F. Kaufman
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Quenching constants for NO2 fluorescence were obtained for 13 different inert gases. Quenching cross sections range from 1/25 to 1/2 of gas kinetic and increase with increasing molecular complexity, and dipole moment. No unusual resonance effect for quenching by ground-state NO2 was found.
G. H. Myers, D. M. Silver, F. Kaufman
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Fluorescence Anisotropy Controlled by Light Quenching
Photochemistry and Photobiology, 1998We demonstrated that fluorescence anisotropy can be effectively decreased or increased in the presence of light quenching, depending on relative polarizations of excitation and quenching pulses. For parallel light quenching, anisotropy decreases to 0.103 and z-axis symmetry is preserved.
I, Gryczynski +2 more
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An internally quenched fluorescent substrate for collagenase
Peptide Science, 2008AbstractA synthetic collagenase substrate containing the internal peptide sequence—Gly‐Gly‐Pro‐Leu‐Gly‐Pro‐Pro‐Gly‐Pro—has been synthesized, with an N‐terminus 4‐((4‐(dimethylamino)phenyl)azo)‐benzoyl (DABCYL) group and C‐terminus 5‐[2‐(acetamido)ethylamino] naphthalene‐1‐sulfonic acid (AEDANS) moiety resulting in internal quenching of AEDANS ...
Saikumari, YK, Balaram, P
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Quenching of the Fluorescence of Aromatic Pterins by Deoxynucleotides
The Journal of Physical Chemistry A, 2009Steady-state and time-resolved studies of the fluorescence of four aromatic unconjugated pterins (pterin (Ptr), 6-(hydroxymethyl)pterin (Hmp), 6-methylpterin (Mep), and 6,7-dimethylpterin (Dmp)) in aqueous solutions in the presence of different nucleotides (2'-deoxyguanosine 5'-monophosphate (dGMP), 2'-deoxyadenosine 5'-monophosphate (dAMP), and 2 ...
Gabriela, Petroselli +6 more
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