Fluorescence quenching of anthracene in charged micelles by pyridinium and iodide ions

Biochemistry ◽  
1974 ◽  
Vol 13 (12) ◽  
pp. 2594-2597 ◽  
Author(s):  
Henry J. Pownall ◽  
Louis C. Smith
Keyword(s):  
Fluorescence Quenching ◽  
Iodide Ions

Fluorescence quenching of 1-pyrene-carboxaldehyde by iodide ions in the presence of anionic (SDS) and cationic (CTAC) micelles: a quantitative treatment

RSC Advances ◽  
2015 ◽  
Vol 5 (58) ◽  
pp. 46485-46492 ◽  
Author(s):  
Eva Bernal ◽  
José Antonio Lebron ◽  
Beatriz Sarrion ◽  
Pilar Lopez-Cornejo ◽  
Carmen Carmona ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Equilibrium Condition ◽  
Photochemical Reactions ◽  
Iodide Ions ◽  
Pseudophase Model ◽  
Quantitative Treatment

Applicability of the pseudophase model to photochemical reactions in the presence of receptors (micelles) in spite of the fact that the equilibrium condition between free and bound reactants does not hold.

Highly luminescent nitrogen-doped carbon quantum dots as effective fluorescent probes for mercuric and iodide ions

2015 ◽  
Vol 3 (9) ◽  
pp. 1922-1928 ◽  
Author(s):  
Zi Li ◽  
Huijun Yu ◽  
Tong Bian ◽  
Yufei Zhao ◽  
Chao Zhou ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Fluorescence Quenching ◽  
Fluorescent Probes ◽  
Hydrothermal Reaction ◽  
Carbon Quantum Dots ◽  
Iodide Ions ◽  
Nitrogen Doped ◽  
Recovery Processes ◽  
One Step ◽  
Nitrogen Doped Carbon

Nitrogen-doped carbon quantum dots (N-CQDs) prepared via a one-step hydrothermal reaction exhibited highly selective and sensitive detection of Hg2+ and I− through fluorescence quenching and recovery processes, respectively.

Solvents effects on the fluorescence quenching of anthracene by iodide ions

1991 ◽  
Vol 176 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Marek Mac ◽  
Anna Wach ◽  
Jan Najbar
Keyword(s):  
Fluorescence Quenching ◽  
Iodide Ions

scholarly journals Urea-doped carbon dots as fluorescent switches for the selective detection of iodide ions and their mechanistic study

RSC Advances ◽  
2021 ◽  
Vol 11 (44) ◽  
pp. 27645-27652
Author(s):  
Kai Wang ◽  
Cuihuan Geng ◽  
Fang Wang ◽  
Yajun Zhao ◽  
Zongling Ru
Keyword(s):  
Energy Dissipation ◽  
Fluorescence Quenching ◽  
Carbon Dots ◽  
Mechanistic Study ◽  
Selective Detection ◽  
Iodide Ions ◽  
Quenching Process ◽  
Doped Carbon Dots ◽  
Dynamic Fluorescence

Urea-doped carbon dots (N-CDs) have been successfully fabricated for monitoring iodide ions; the reduced lifetime of N-CDs demonstrated that the excited energy dissipation led to a dynamic fluorescence quenching process.

scholarly journals Interaction of three Caenorhabditis elegans isoforms of translation initiation factor eIF4E with mono- and trimethylated mRNA 5' cap analogues.

2002 ◽  
Vol 49 (3) ◽  
pp. 671-682 ◽  
Author(s):  
Alicja Stachelska ◽  
Zbigniew Wieczorek ◽  
Katarzyna Ruszczyńska ◽  
Ryszard Stolarski ◽  
Monika Pietrzak ◽  
...  
Keyword(s):  
Caenorhabditis Elegans ◽  
Fluorescence Quenching ◽  
Translation Initiation ◽  
Translational Control ◽  
Translation Initiation Factor ◽  
Initiation Factor ◽  
Iodide Ions ◽  
C Elegans ◽  
Eukaryotic Mrnas ◽  
Mechanism Of Recognition

Translation initiation factor eIF4E binds the m(7)G cap of eukaryotic mRNAs and mediates recruitment of mRNA to the ribosome during cap-dependent translation initiation. This event is the rate-limiting step of translation and a major target for translational control. In the nematode Caenorhabditis elegans, about 70% of genes express mRNAs with an unusual cap structure containing m(3)(2,2,7)G, which is poorly recognized by mammalian eIF4E. C. elegans expresses five isoforms of eIF4E (IFE-1, IFE-2, etc.). Three of these (IFE-3, IFE-4 and IFE-5) were investigated by means of spectroscopy and structural modelling based on mouse eIF4E bound to m(7)GDP. Intrinsic fluorescence quenching of Trp residues in the IFEs by iodide ions indicated structural differences between the apo and m(7)G cap bound proteins. Fluorescence quenching by selected cap analogues showed that only IFE-5 forms specific complexes with both m(7)G- and m(3)(2,2,7)G-containing caps (K(as) 2 x 10(6) M(-1) to 7 x 10(6) M(-1)) whereas IFE-3 and IFE-4 discriminated strongly in favor of m(7)G-containing caps. These spectroscopic results quantitatively confirm earlier qualitative data derived from affinity chromatography. The dependence of K(as) on pH indicated optimal cap binding of IFE-3, IFE-4 and IFE-5 at pH 7.2, lower by 0.4 pH units than that of eIF4E from human erythrocytes. These results provide insight into the molecular mechanism of recognition of structurally different caps by the highly homologous IFEs.

Fluorescence Quenching Reaction of Fenaminosulf with Acriflavine and Their Analytical Applications

2012 ◽  
Vol 29 (4) ◽  
pp. 440
Author(s):  
Yaqiong WANG ◽  
Shaopu LIU ◽  
Zhongfang LIU ◽  
Xiaoli HU
Keyword(s):  
Fluorescence Quenching ◽  
Analytical Applications
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