Fluorescent Cyclodextrins Responsive to Molecules and Metal Ions. Fluorescence Properties and Inclusion Phenomena ofNα-Dansyl-l-lysine-β-cyclodextrin and Monensin-IncorporatedNα-Dansyl-l-lysine-β-cyclodextrin

1999 ◽  
Vol 64 (2) ◽  
pp. 382-387 ◽  
Author(s):  
Akihiko Ueno ◽  
Akira Ikeda ◽  
Hiroshi Ikeda ◽  
Tsukasa Ikeda ◽  
Fujio Toda
Keyword(s):  
Metal Ions ◽  
Fluorescence Properties ◽  
Inclusion Phenomena

Effect of protons and metal ions on the fluorescence properties of a polylysin dendrimer containing twenty four dansyl units †

2000 ◽  
pp. 3765-3771 ◽  
Author(s):  
Vincenzo Balzani ◽  
Paola Ceroni ◽  
Sven Gestermann ◽  
Marius Gorka ◽  
Christopher Kauffmann ◽  
...  
Keyword(s):  
Metal Ions ◽  
Fluorescence Properties

[1+1] and [2+2] crown ethers derived from N,N-bis(2-hydroxyalkylbenzyl)alkylamine and their inclusion phenomena with metal ions

2008 ◽  
Vol 62 (3-4) ◽  
pp. 333-338 ◽  
Author(s):  
Thitiporn Rungsimanon ◽  
Apirat Laobuthee ◽  
Mikiji Miyata ◽  
Suwabun Chirachanchai
Keyword(s):  
Metal Ions ◽  
Crown Ethers ◽  
Inclusion Phenomena

Synthesis of highly fluorescent gold nanoclusters and their use in sensitive analysis of metal ions

The Analyst ◽  
2017 ◽  
Vol 142 (23) ◽  
pp. 4486-4493 ◽  
Author(s):  
Yayu Yang ◽  
Ailing Han ◽  
Ruixue Li ◽  
Guozhen Fang ◽  
Jifeng Liu ◽  
...  
Keyword(s):  
Quantum Yield ◽  
Metal Ions ◽  
Gold Nanoclusters ◽  
Emission Peak ◽  
Fluorescence Properties ◽  
Sensitive Analysis ◽  
The Core ◽  
Au Clusters

The fluorescence properties, including emission peak and quantum yield, of Au clusters are dependent upon the ligands capping the core.

Spectroscopic Characterization of the Artificial Siderophore Pyridinochelin

2006 ◽  
Vol 61 (9-10) ◽  
pp. 741-748 ◽  
Author(s):  
Michael U. Kumke ◽  
Carsten Dosche ◽  
Roman Flehr ◽  
Wolfram Trowitzsch-Kienast ◽  
Hans-Gerd Löhmannsröben
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Fluorescence Probe ◽  
Fluorescence Decay ◽  
Molecular Probes ◽  
Transport Processes ◽  
Intrinsic Fluorescence ◽  
Fluorescence Properties ◽  
Free Form ◽  
Fluorescence Characteristics

AbstractSiderophores play a very important role in the uptake process of iron by bacteria. Due to the so-called active transport the uptake of siderophores by bacteria is very specific, which makes the use of siderophores as effective shuttles for antibiotics in the treatment of infections and other diseases caused by bacteria highly attractive. In order to further investigate the transport and incorporation of siderophores into the bacteria cells, distinct molecular probes are needed. Especially artificial siderophores, that show a specific intrinsic fluorescence, are highly attractive for such monitoring purposes. A promising candidate of such a fluorescent artificial siderophore is bis-2,3-dihydroxybenzoyl-2,6-dimethylamino-pyridine (pyridinochelin, PY). The fluorescence properties of PY were investigated in different solvents and in the presence of different metal ions. It was found that PY in its free form shows a complex fluorescence behavior. In methanol a clear dual fluorescence is observed. In aqueous solution intermolecular interactions with water molecules are determining the intrinsic fluorescence. Upon complexation with metal ions (Me3+ = Eu3+, Tb3+, Al3+, Fe3+) the fluorescence characteristics changed. The fluorescence quantum yield of PY decreased upon addition of Me3+ - except for Al3+, which showed no fluorescence quenching. The fluorescence decay of PY loaded with metal ions showed a nicely mono-exponential fluorescence decay, which was in contrast to PY in the absence of metal ions. This drastic change in the fluorescence properties of PY upon metal ion complexation makes PY highly attractive as a fluorescence probe for the investigation of siderophore action and siderophore-mediated transport processes

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