Chromogenic Anion Sensors

Suksai, Chomchai; Tuntulani, Thawatchai

doi:10.1007/b101166

Cited by 97 publications

(41 citation statements)

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“…Different trends can be observed in Table 2 (12) where a hydroxyl group has substituted one of the thiol-urea ligands originally present in 9. The structure of this complex was unambiguously elucidated by single crystal X-ray structure analysis (see Figure 9).…”

Section: Computational Studiesmentioning

confidence: 94%

Di-palladium Complexes with Urea-containing Ligands as Anion Receptors

Tovilla

Carlqvist

Benet‐Buchholz

et al. 2007

Supramolecular Chemistry

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Section: Computational Studiesmentioning

confidence: 94%

Di-palladium Complexes with Urea-containing Ligands as Anion Receptors

Tovilla

Carlqvist

Benet‐Buchholz

et al. 2007

Supramolecular Chemistry

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“…[41] 6 ]·2 H 2 O·C 2 H 5 OH: Crystals grew as thin orange plates by slow evaporation from ethanol and methanol. The data crystal was a thin, square plate that had approximate dimensions 0.17 0.15 0.04 mm: triclinic, space group P1 , a = 12.3474(7), b = 13.3443(7), c = 13.9268(9) , a = 73.891(2), b = 67.332(3), g = 74.220(3)8, V = 1998.7 (2) 3 , Z = 2, 1 calcd = 1.599 g cm À1 , m = 0.578 mm…”

Section: Wwwchemeurjorg Experimental Sectionmentioning

confidence: 99%

“…In fact, efforts at carrying out standard titrations were completely stymied by the fact that addition of TBA-H 2 PO 4 to millimolar solutions of either 1 or 2 in [D 6 ]DMSO led to precipitation of the dihydrogen phosphate salt, as evidenced by 31 P NMR spectroscopic analysis. On the other hand, the fact that precipitation occurred led us to infer that the interaction between these two receptors and dihydrogen phosphate anion is appreciable.…”

mentioning

confidence: 99%

Dipyrrolyl‐Functionalized Bipyridine‐Based Anion Receptors for Emission‐Based Selective Detection of Dihydrogen Phosphate

Plitt

Gross

Lynch

et al. 2007

Chemistry A European J

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New cationic anion receptors, based on the use of pyrrole-substituted bipyridine and coordinated to transition metals, are described. Specifically, polypyridine-ruthenium and -rhodium cores have been functionalized to generate an anion binding site. The design was chosen to probe the influence of the pyrrole-to-pyrrole separation on anion-binding affinities and selectivities; this distance is greater in the new systems of this report (receptors 1 and 2) relative to that present in related dipyrrolyl quinoxaline based receptors 3 and 4. Solution-phase anion-binding studies, carried out by means of (1)H NMR spectroscopic titrations in [D(6)]DMSO and isothermal titration calorimetry (ITC) in DMSO, reveal that 1 and 2 bind most simple anions with substantially higher affinity than either 3 or 4. In the case of chloride anion, structural studies, carried out by means of single-crystal X-ray diffraction analyses, are consistent with the solution-phase results and reveal that receptors 1 and 2 are both able to stabilize complexes with this halide anion in the solid state.

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“…1 In the last decade, many efforts have been devoted to the development of anion sensors, 2,3 among them receptor molecules, which allow optical detection of anionic species. [4][5][6][7][8][9] One of the main groups of anion receptors consists of neutral molecules having slightly acidic groups, which bind anions by hydrogen bond formation. Examples include amide- [10][11][12] and ureabased [10][11][12][13][14] receptors and host molecules containing heterocycles with slightly acidic NH groups, 11,12,[15][16][17][18] among them bis(phenylureas) and bis(phenylthioureas) having tricyclic heterocyclic units like acridone 17 and carbazole.…”

Section: Introductionmentioning

confidence: 99%