Lanthanide-ion modified cyclodextrin supramolecules

Rudzinski, Christina M.; Hartmann, Wanda K.; Nocera, Daniel G.

doi:10.1016/s0010-8545(98)90021-2

Cited by 29 publications

(17 citation statements)

References 23 publications

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“…30,[80][81][82][83][84][85][86][87] Even fewer have focused on such behavior in the solid state. 28,31,35,38 A potentially significant advantage of a solid-state or materials approach over, for example, an approach based on a monolayer of receptor molecules, is the higher guest-uptake capacity available.…”

Section: Applications: Chemical Sensingmentioning

confidence: 99%

Supramolecular Coordination Chemistry and Functional Microporous Molecular Materials

Dinolfo¹,

2001

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An enormous number and variety of discrete, isolable, supramolecular-coordinationchemistry-based assemblies featuring well-defined nanoscale cavities have been designed, synthesized, and characterized over the past decade. A small number of these have subsequently been used as building blocks for microporous materials and now comprise an important component of an emerging chemistry of microporous molecular materials. The extant materials typically have displayed large void volumes, high internal surface areas, and the ability to withstand the systematic removal of solvent. These and other properties (chemical tailorability, alignment of cavities to form extended channels, good processability, etc.) suggest a number of potentially very exciting applications involving selective molecular transport, sensing, or chemical transformationswith many of these now supported by proofof-concept experiments.

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Section: Applications: Chemical Sensingmentioning

confidence: 99%

Supramolecular Coordination Chemistry and Functional Microporous Molecular Materials

Dinolfo¹,

2001

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“…a) Ion sensing by back-energy transfer in solution, b) Intermolecular energy transfer luminescence of Eu(III) complexed with a Wang-decapeptide-Lariat ether system, c) Metal allosteric interactions induces a reorganization in the peptide chain followed by europium fluorescence enhancement. This type of sensitization is very common for Eu(III) complexes as many triplet states lie just above the 5 D 0 emissive state and it has been reported for many different types of molecules including, Schiff base ligands [23], multidentate pyridine [24], cryptands [25,26], calixarenes [27,28], cyclodextrins [29,30] and crown-ether derivatives [31]. Also, from our studies so far, it seems that the presence of a Cys residue near the Lariat ether moiety may play a role in the backenergy transfer process by complexing metal ions near to the donor/acceptor centers.…”

Section: Sensing Mechanismsmentioning

confidence: 83%

Synthesis of Metallothionein-Mimic Decapeptides with Heavy Atom Signaling Properties

Dı́az-Garcı́a

Rivero

Gonzalez³

2006

CCHTS

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The automated parallel solid-phase synthesis of a 17-member library of metallothionein-mimic decapeptides carrying a Lariat ether group is described. The peptides were synthesized in good yield and the identity and quality of each product were performed by mass spectrometry and IR. Subsequently, in the presence of europium(III) ions as fluorescent reporter, each compound was screened, both attached to the resin and cleaved off, for their sensing behavior towards metal ions (Cd(2+),Hg(2+), Cu(2+), Mg(2+) and Ca(2+)) using fluorimetric techniques. Several of these Cys-enriched synthetic peptides showed surprisingly low detection limits for Cd(2+) and Hg(2+). The analytical potential of these metallothionein-mimic decapeptides as metal ion recognition materials for sensor development is outlined. Finally, the sensing response mechanism, based on an energy transfer process and a metal ion allosteric interaction, is proposed.

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“…Chemosensors comprise molecular-scale structures that recognize and signal the presence of analytes. [1][2][3][4][5][6][7][8][9][10][11][12] A significant advance in chemosensor design in recent years has come about from the use of supramolecules as the basic building block of the sensor architecture. Though only 10-100 A ˚in dimension, supramolecules have many familiar shapes including balls, bowls, boxes, bracelets, buckets, chains, clamps, cubes, ladders, lariats, pagodas, saddles, starbursts and tweezers [13][14][15] to name a few.…”

Section: Introductionmentioning

confidence: 99%

“…However, more than whimsical reflections of chemists' imaginations, these supramolecule frameworks provide a non-covalent receptor site for analytes and a scaffold on which to attach a reporter site. 1,3,4,13,16,17 Signalling from the reporter site may be accomplished by electrical or optical methods, though the latter has come to the forefront owing to its sensitivity and ease of implementation, 18,19 especially when the optical signal is derived from luminescence. In particular, a light emitting signal is superior for chemosensor design because it can: report on nanometre length-scales with nanosecond time responses, [20][21][22] permit analytes and their influences to be monitored continuously in real time and in situ, [23][24][25][26] possess an inherently large bandwidth (and hence information capacity), feature intrinsic selectivity owing to flexible choices of wavelength and polarization, achieve sensitivity down to the single molecule limit, [27][28][29][30][31][32][33][34][35][36][37][38][39] and be married to a variety of imaging technologies including optical wave guides and fibers.…”

Section: Introductionmentioning

confidence: 99%