title: 2-(1,2,3-Triazol-4-yl)pyridine-containing ethynylarenes as selective 'turn-on' fluorescent chemosensors for Ni(II).
abstract: A series of ethynylarene compounds containing 2-(1,2,3-triazol-4-yl)pyridine chelating units were studied as fluorescent chemosensors for metal cations in aqueous solution. Analogs possessing two chelating units bridged by either 1,4-diethynylphenyl or 2,7-diethynylnaphthyl subunits displayed large hypsochromic shifts coupled with signal intensification when exposed to increasing concentrations of Ni(II), a unique response among 22 metal cation analytes. This response was shown to be reversible, and is proposed to derive from disruption of aggregate formation upon Ni(II) binding at the peripheral chelating units.
authors.affiliation: Department of Chemistry, Creighton University, 2500 California Plaza, Omaha, NE, 68178, U.S.A.
authors.forename: Joseph A
authors.initials: JA
authors.lastname: Christensen
authors.affiliation: Department of Chemistry, Creighton University, 2500 California Plaza, Omaha, NE, 68178, U.S.A.
authors.forename: James T
authors.initials: JT
authors.lastname: Fletcher
keywords: 1,2,3-Triazole; Fluorescent; Ni(II) detection; Ratiometric; Sensor
references.citation: Chem Rev. 2008 Aug;108(8):2952-3015
references.pmid: 18698735
references.citation: Dalton Trans. 2012 Nov 7;41(41):12984-90
references.pmid: 22996681
references.citation: Curr Opin Chem Biol. 2006 Jun;10(3):238-45
references.pmid: 16679045
references.citation: Chem Soc Rev. 2011 Jul;40(7):3483-95
references.pmid: 21445455
references.citation: Org Lett. 2003 Apr 3;5(7):967-70
references.pmid: 12659550
references.citation: Chem Soc Rev. 2014 Apr 21;43(8):2522-71
references.pmid: 24492745
references.citation: Org Biomol Chem. 2010 Mar 7;8(5):1017-26
references.pmid: 20165791
references.citation: Chem Rev. 2012 Aug 8;112(8):4391-420
references.pmid: 22616565
references.citation: Crit Rev Oncol Hematol. 2002 Apr;42(1):35-56
references.pmid: 11923067
references.citation: Tetrahedron Lett. 2013 Sep 25;54(39):5366-5369
references.pmid: 24163484
references.citation: Dalton Trans. 2010 Jan 14;(2):612-23
references.pmid: 20024000
references.citation: Nat Chem Biol. 2008 Mar;4(3):168-75
references.pmid: 18277978
references.citation: Angew Chem Int Ed Engl. 2012 Apr 10;51(15):3532-54
references.pmid: 22422626
references.citation: J Org Chem. 2002 May 3;67(9):3057-64
references.pmid: 11975567
references.citation: Inorg Chem. 2010 Aug 16;49(16):7241-3
references.pmid: 20690735
references.citation: Org Lett. 2010 Mar 5;12(5):940-3
references.pmid: 20131818
references.citation: Spectrochim Acta A Mol Biomol Spectrosc. 2012 May;90:40-4
references.pmid: 22306449
references.citation: Inorg Chem. 2011 Sep 5;50(17):8214-24
references.pmid: 21830760
references.citation: Dalton Trans. 2010 Jan 21;39(3):675-96
references.pmid: 20066208
references.citation: Angew Chem Int Ed Engl. 2002 Jul 15;41(14):2596-9
references.pmid: 12203546
references.citation: Angew Chem Int Ed Engl. 2001 Apr 17;40(8):1536-1538
references.pmid: 11317327
references.citation: Org Lett. 2004 Oct 14;6(21):3841-4
references.pmid: 15469363
references.citation: J Am Chem Soc. 2001 Feb 14;123(6):1260-1
references.pmid: 11456693
references.citation: Chem Rev. 2007 Mar;107(3):874-922
references.pmid: 17305399