Chiral molecular recognition in intercalated zirconium phosphate

Cao, Guang; Garcia, Maurie E.; Alcala, Monica; Burgess, L.; Mallouk, Thomas E.

doi:10.1021/ja00045a046

Cited by 145 publications

(64 citation statements)

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“…We have used a solvent system that is better matched to the refractive index of the silica particles to reduce the scattering background. The refractive index of silica gel is approximately 1.46, 31 and with DMSO as the solvent, (n = 1.48), we obtain a seven-fold decrease in background signal compared to ethanol (n = 1.36).…”

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confidence: 79%

“…ventional ionic zirconium bisphosphonate (ZP) interlayer linking chemistry, [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] where the phosphonates are sequestered by metal ion complex formation, we use the side groups of these polymer multilayers in their deprotected form 35,36 as active sites for metal ion uptake (Figure 3). 29 Covalent interlayer attachment is accomplished using adipoyl chloride.…”

Section: Figure 9 Synthetic Route To the Growth Of Covalent Polyureamentioning

confidence: 99%

“…The growth of layered assemblies using ionic interlayer linking chemistry is well established. [15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34] While broadly useful, there are some instances where this chemistry is not ideal. To overcome this limitation, we have demonstrated covalent linking chemistry that achieves controlled layer growth using an efficient polymerization reaction (Fig.…”

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confidence: 99%

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Understanding Molecular Interactions within Chemically Selective Layered Polymer Assemblies

Blanchard¹

2009

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confidence: 79%

Section: Figure 9 Synthetic Route To the Growth Of Covalent Polyureamentioning

confidence: 99%

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confidence: 99%

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Understanding Molecular Interactions within Chemically Selective Layered Polymer Assemblies

Blanchard¹

2009

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“…2 Due to the great structural flexibility of these two compounds, it is relatively easy to prepare modified a-and c-structured inorgano-organic functional derivatives by means of intercalation or ion-exchange reactions carried out under mild conditions. [2][3][4][5] These derivatives, whose structures are related to those of their parent compounds, were investigated for potential applications in the fields of photochemistry, 6 molecular and chiral recognition, 7 and bio-catalysis. 8 Furthermore, some of these low-dimensional derivatives are being intensely studied as promising materials for applications in nanocomposite and fuel cell technologies.…”

Section: Introductionmentioning

confidence: 99%

Dimensional reduction in zirconium phosphate; from layers to ribbons to chains

2003

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(2), have been synthesized via decomposition of zirconium fluoride complexes. Their structures were determined by single crystal and X-ray powder diffraction, respectively. The structure of 1 is made of infinite single chains composed of insular Zr octahedra vertex-linked to four PO 4 tetrahedra. Each zirconium is trans-coordinated to two F atoms. The structure of 2 is composed of double chains that can be seen as two condensed single chains of 1, with the elimination of a fluorine atom from the zirconium coordination sphere. Zirconium is octahedrally coordinated, with three triply connected and two doubly connected phosphate tetrahedra, and with a fluorine atom. The structural connection between 1, 2, and layered a-and c-zirconium phosphates is discussed and verified by interconversion experiments. 1 was found to convert into 2 after ageing in its mother liquor, while 2 can be converted into a-ZrP in acidic media. 1 and 2 were found to swell and form stable colloidal dispersions on elution with 0.1 M hydrochloric acid solution. These properties make these one-dimensional zirconium phosphates interesting compounds for application in nanocomposite materials synthesis.

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“…We investigated this principle by reacting TBA + -intercalated R-ZrP with the chiral quaternary ammonium cation 1. 30 Molecules of this type form 1:1 noncovalent complexes enantioselectively with chiral π-donors, such as naphthylamine derivatives. 31 When contacted with a racemic solution of guest 2, the host-intercalated solid shows a strong preference for one enantiomer.…”

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confidence: 99%