title: A highly selective turn on fluorescence sensor for Hg2+ based on rhodamine derivative.
abstract: A novel fluorescent rhodamine based chemosensor (E)-3',6'-bis(diethylamino)-2-((2-(pyridin-2-ylmethoxy)benzylidene)amino)spiro[isoindoline-1,9'-xanthen]-3-one, RSP, had been successfully developed and well characterized by NMR, FT-IR and Mass spectroscopy. The chemosensor exhibits high selectivity for Hg(2+) over other ions (Ag(+), Pb(2+), Cu(2+), Ni(2+), Fe(3+), Co(2+), Zn(2+) and Cd(2+)) with fluorescence enhancement in ethanol solution. More over the detection limit of the sensor is in the 10(-6) M level. The binding ratio of RSP-Hg(2+) complex was determined to be 1:1 according to the Job plot. Test strips based on RSP were fabricated, which showed the application of the sensor for detection of mercuric ions in water by naked eyes.
authors.affiliation: Department of Chemistry and Chemical Engineering, ShaanXi Xue Qian Normal University, Xi'an, 710010, People's Republic of China, lianqingli008@163.com.
authors.forename: LianQing
authors.initials: L
authors.lastname: Li
authors.forename: Li
authors.initials: L
authors.lastname: Yuan
authors.forename: ZhiHong
authors.initials: Z
authors.lastname: Liu
mesh_terms: D005456:Fluorescent Dyes / Q000032:analysis / Q000138:chemical synthesis / Q000737:chemistry*; D008628:Mercury / Q000032:analysis*; D015394:Molecular Structure; D012235:Rhodamines / Q000737:chemistry*; D013050:Spectrometry, Fluorescence
chemical_list: D005456:Fluorescent Dyes; D012235:Rhodamines; D008628:Mercury
references.citation: J Am Chem Soc. 2005 Dec 7;127(48):16760-1
references.pmid: 16316202
references.citation: J Environ Monit. 2009 Feb;11(2):330-5
references.pmid: 19212590
references.citation: Org Lett. 2009 Jul 2;11(13):2740-3
references.pmid: 19507872
references.citation: Chem Rev. 2013 Jan 9;113(1):192-270
references.pmid: 22702347
references.citation: J Org Chem. 2009 Mar 6;74(5):2167-70
references.pmid: 19209877
references.citation: Chem Commun (Camb). 2012 Sep 25;48(74):9293-5
references.pmid: 22875192
references.citation: Inorg Chem. 2012 Feb 6;51(3):1769-77
references.pmid: 22235801
references.citation: Org Lett. 2007 Jun 21;9(13):2501-4
references.pmid: 17530763
references.citation: Chem Commun (Camb). 2012 Jan 7;48(2):293-5
references.pmid: 22101304
references.citation: Chem Rev. 2008 Sep;108(9):3443-80
references.pmid: 18652512
references.citation: Chem Soc Rev. 2012 Apr 21;41(8):3210-44
references.pmid: 22184584
references.citation: Chem Rev. 2010 Oct 13;110(10):6280-301
references.pmid: 20726526
references.citation: Chem Commun (Camb). 2008 Apr 28;(16):1859-61
references.pmid: 18401498
references.citation: Inorg Chem. 2012 Jan 16;51(2):772-4
references.pmid: 22220642
references.citation: Spectrochim Acta A Mol Biomol Spectrosc. 2014 Jan 24;118:908-14
references.pmid: 24161855