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Self-Assembly of New Arene-Ruthenium Rectangles Containing Triptycene Building Block and Their Application in Fluorescent Detection of Nitro Aromatics.

ABSTRACT: A suite of two new tetraruthenium metallarectangles 5 and 6 have been obtained from [2 + 2] self-assemblies between dipyridylethynyltriptycene 2 and one of the two dinuclear arene ruthenium clips, [Ru2 (?-?4-OO?OO) (?6-p-cymene)2][OTf]2 ; (OO?OO = oxalate 3; 6,11-dihydroxy-5,12-naphthacenedionato (dotq) 4; OTf = triflate). These molecular rectangles are fully characterized by 1H NMR spectroscopy, electrospray mass spectrometry. A single crystal of 6 was suitable for X-ray diffraction structural characterization. These new metallarectangles showed fluorescence behavior in solution, have been examined for emission quenching effects with various aromatic compounds, and show high quenching selectivity and sensitivity towards nitroaromatics, particularly picric acid and trinitrotoluene. Excited-state charge transfer from the rectangles to nitro aromatic substrates can be used to develop selective fluorescent sensors for nitro aromatics.

SUBMITTER: Dubey A 

PROVIDER: S-EPMC4550223 | biostudies-literature | 2014 Nov

REPOSITORIES: biostudies-literature

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Self-Assembly of New Arene-Ruthenium Rectangles Containing Triptycene Building Block and Their Application in Fluorescent Detection of Nitro Aromatics.

Dubey Abhishek A   Mishra Anurag A   Min Jin Wook JW   Lee Min Hyung MH   Kim Hyunuk H   Stang Peter J PJ   Chi Ki-Whan KW  

Inorganica chimica acta 20141101 Pt A

A suite of two new tetraruthenium metallarectangles <b>5</b> and <b>6</b> have been obtained from [2 + 2] self-assemblies between dipyridylethynyltriptycene <b>2</b> and one of the two dinuclear arene ruthenium clips, [Ru<sub>2</sub> (<i>μ</i>-<i>η</i><sup>4</sup>-OO∩OO) (<i>η</i><sup>6</sup>-<i>p</i>-cymene)<sub>2</sub>][OTf]<sub>2</sub> ; (OO∩OO = oxalate <b>3</b>; 6,11-dihydroxy-5,12-naphthacenedionato (dotq) <b>4</b>; OTf = triflate). These molecular rectangles are fully characterized by <su  ...[more]

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