کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1309475 975209 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Self-assembly of new arene-ruthenium rectangles containing triptycene building block and their application in fluorescent detection of nitro aromatics
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Self-assembly of new arene-ruthenium rectangles containing triptycene building block and their application in fluorescent detection of nitro aromatics
چکیده انگلیسی


• Triptycene and ethynyl functionalities containing new ligand has been synthesized.
• Fluorescent and π-electron rich metallarectangles 5 and 6 were synthesized.
• Presence of triptycene prevents self-quenching by avoiding intermolecular stacking.
• Metallarectangles 5 and 6 show high emission quenching selectivity for nitroaromatics.

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 (μ-η4-OO∩OO) (η6-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 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.

Fluorescent metalla-rectangles are prepared by coordination-driven self-assembly of organometallic Ru-acceptor with new dipyridylethynyl-triptycene organic ligand. These metalla-rectangles undergo efficient fluorescence quenching by nitroaromatics.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 423, Part A, 1 November 2014, Pages 326–331
نویسندگان
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