Dithioamide metal ion receptors on fluorescent lipid bilayers for the selective optical detection of mercuric ion

Sasaki, Darryl Y.; Padilla, Benjamin E.

doi:10.1039/a802534g

Cited by 67 publications

(45 citation statements)

References 7 publications

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“…Therefore, at least in principle, the method is of general applicability and by tuning the selectivity of the binding subunit a series of sensors selective for different metal ions (or other substrates) may be prepared, as the sensing scheme does not depend on specific properties of the metal ion itself. This has been demonstrated by Sasaki and Padilla who have developed a sensor for Hg 2+ ions using a similar pyrene-functionalized lipid but for the metal ion binding subunit which was changed to a mercury-selective dithioamide moiety [78].…”

Section: Fluorescent Chemical Sensing In Surfactant Aggregatesmentioning

confidence: 94%

Amphiphilic metalloaggregates: Catalysis, transport, and sensing

Mancin

Scrimin

Tecilla

et al. 2009

Coordination Chemistry Reviews

131

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Section: Fluorescent Chemical Sensing In Surfactant Aggregatesmentioning

confidence: 94%

Amphiphilic metalloaggregates: Catalysis, transport, and sensing

Mancin

Scrimin

Tecilla

et al. 2009

Coordination Chemistry Reviews

131

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“…Due to these peculiar properties and because of its chemical stability, it is also employed as a probe for solid-state studies [11,12], polymer association [13], polymer-polymer interactions, polymer-surfactant interactions, micelle critical concentration determinations, etc. [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Intramolecular excimer formation and sensing behavior of new fluorimetric probes and their interactions with metal cations and barbituric acids

Lodeiro

Lima

Melo

et al. 2006

Sensors and Actuators B: Chemical

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A new family of compounds able to promote host-guest interactions with specific molecules (e.g., cyanuric and parabanic acids) and to coordinate metal ions, namely Zn(II) and Cu(II), has been synthesized and fully characterized. The new probes derive from the attachment of two methylaminopyrene units to the carbonyl precursor 2,6-bis(2-formylphenoxymethyl)pyridine. Its signalling properties result from the fluorescence emission properties, which reveal the existence of intramolecular excimer formation. The compounds have showed to be highly sensitive to the solvent and hydrogen ion concentration of the medium. Depending on these, different monomer-to-excimer fluorescence ratio is displayed by the two probes. The compound with a single pyrene unit revealed absence of excimer formation and was used as model compound. The overall results are discussed on the basis of the studied probes as potentially revealing molecular movements, off-on-off fluorescent photoinduced electron transfer (PET), host-guest interactions with specific compounds and of sensing metal ions.

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“…Synthetic lipid bilayer systems have also been used to gain insights into the complex dynamic processes occurring within the cellular membrane in response to chemical recognition events. These synthetic systems were designed to utilize fluorescence or colorimetric changes as reporters of the receptor aggregation or dispersion that occurs due to hydrogen bonding interactions (Ariga and Kunitake, 1998), protein (Song et al, 1998;Maloney et al, 1996Maloney et al, , 1999 or polypeptide (Ng et al, 1995) binding, virus recognition (Reichert et al, 1995), or metal ion chelation (Singh et al, 1992;Sasaki et al, 1995;Sasaki and Padilla, 1998).…”

Section: Introductionmentioning

confidence: 99%

Lipid Membrane Reorganization Induced by Chemical Recognition

Waggoner

Sasaki

2001

Biophysical Journal

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Nanoscale structural reorganization of a lipid bilayer membrane induced by a chemical recognition event has been imaged using in situ atomic force microscopy (AFM). Supported lipid bilayers, composed of distearylphosphatidylcholine (DSPC) and a synthetic lipid functionalized with a Cu(2+) receptor, phase-separate into nanoscale domains that are distinguishable by the 9 A height difference between the two molecules. Upon binding of Cu(2+) the electrostatic nature of the receptor changes, causing a dispersion of the receptor molecules and subsequent shrinking of the structural features defined by the receptors in the membrane. Complete reversibility of the process was demonstrated through the removal of metal ions with EDTA.

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Dithioamide metal ion receptors on fluorescent lipid bilayers for the selective optical detection of mercuric ion

Cited by 67 publications

References 7 publications

Amphiphilic metalloaggregates: Catalysis, transport, and sensing

Amphiphilic metalloaggregates: Catalysis, transport, and sensing

Intramolecular excimer formation and sensing behavior of new fluorimetric probes and their interactions with metal cations and barbituric acids

Lipid Membrane Reorganization Induced by Chemical Recognition

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