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Fluorescent chemosensors containing a Ru(tpy)2 2+ core and open-chain polyazaalkanes

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Abstract

4′-[4-(Bromomethyl)phenyl]-2,2′:6′,2″-terpyridine reacts with triethylenetetraamine or tetraethylenepentaamine in CH2Cl2 to yield the ligands L1 and L2, respectively. Reaction of L1 and L2 with Ru(mtpy)Cl3 (mtpy = 4′-methyl-2,2′:6′,2″-terpyridine) in MeOH yielded, after column chromatography and precipitation with [NH4][PF6], the compounds [Ru(L1)(mtpy)][PF6]2 and [Ru(L2)(mtpy)][PF6]2. These metallo-receptors contain triethylenetetraamine or tetraethylenepentaamine recognition sites and [Ru(tpy)2]2+ cores as fluorescent signalling subunits. The fluorescent behaviour of [Ru(L1)(mtpy)]2+ and [Ru(L2)(mtpy)]2+ in the presence of metal ions and anions has been studied in MeCN:H2O (70:30 v/v) as a function of the pH.

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Authors and Affiliations

  1. Departamento de Química, Universidad Politécnica de Valencia, Camino de Vera s/n, 46071, Valencia, Spain

    Youseff Al Shihadeh, Angel Benito, José Manuel Lloris, Ramón Martínez-Máñez & Juan Soto

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  1. Youseff Al Shihadeh
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  2. Angel Benito
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  3. José Manuel Lloris
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  4. Ramón Martínez-Máñez
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  5. Juan Soto
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Shihadeh, Y.A., Benito, A., Lloris, J.M. et al. Fluorescent chemosensors containing a Ru(tpy)2 2+ core and open-chain polyazaalkanes. Transition Metal Chemistry 27, 307–310 (2002). https://doi.org/10.1023/A:1014802617142

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