期刊
INORGANICA CHIMICA ACTA
卷 423, 期 -, 页码 326-331出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2014.08.037
关键词
Fluorescent; Ruthenium; Self-assembly; Nitro aromatics; Metalla-rectangle
资金
- Basic Science Research program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [NRF-2013R1A1A2006859]
- Priority Research Centers program through the NRF [20090093818]
- USA National Institutes of Health [GM-057052]
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, [Ru-2 (mu-eta(4)-OO boolean AND OO) (eta(6)-p-cymene)(2)][OTf](2); (OO boolean AND OO = oxalate 3; 6,11-dihydroxy-5,12-naphthacenedionato (dotq) 4; OTf = triflate). These molecular rectangles are fully characterized by H-1 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 1,3,5-trinitrobenzene. Excited-state charge transfer from the rectangles to nitro aromatic substrates can be used to develop selective fluorescent sensors for nitro aromatics. (C) 2014 Elsevier B.V. All rights reserved.
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