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1、ORGANICLETTERSBenzimidazole-BasedTripodal2007Vol.9,No.10Receptor:HighlySelectiveFluorescent1991-1994ChemosensorforIodideinAqueousSolutionNarinderSingh†andDooOkJang*,†,‡DepartmentofChemistry,YonseiUniVersity,Wonju220-710,Korea,andCenterforBioactiVeMolecularHybr
2、ids,YonseiUniVersity,Seoul120-749,Koreadojang@yonsei.ac.krReceivedMarch10,2007ABSTRACTWesynthesizedanoveltripodalfluorescentreceptorbearingbenzimidazolemotifsasrecognitionsitesinthepodsofthereceptor.Therecognitionbehaviorofthereceptortowardvariousanionswaseval
3、uatedinCH3CN/H2O(9:1,v/v)solution.ThereceptorshowedchangesinfluorescentintensityonlywithI-,butitshowednosignificantchangesonadditionofotheranionssuchasF-,Cl-,Br-,HSO4-,NO3-,CH3COO-,andH2PO4-.Thedesignandsynthesisofreceptorscapableofsensingmoleculessuchasdrugsa
4、nddyes.Therefore,developinganionsselectivelyhaveprovidedimportanttoolsofdetectingreceptorsthatcanbindiodideselectivelyisstronglydesired.biologicallyandenvironmentallyimportantanalysts.1IodideSpectroscopicorelectrochemicaltoolshavebeenusedtoplaysanimportantrole
5、inseveralbiologicalactivitiessuchobserveanionbindingtoareceptor,andthefluorescentasneurologicalactivityandthyroidfunction.Hencethesensingofanionshasdrawnmuchattentionforitshighiodidecontentofurineandmilkisoftenrequiredforsensitivityandselectivity.3Nevertheless
6、,therearefewreportsnutritional,metabolic,andepidemiologicalstudiesofthyroidonthefluorescentrecognitionofiodide,4andin-depthdisorder.2Moreover,elementaliodinehasbeenfrequentlyresearchhasnotbeendoneontheestimationofiodideinusedinmanyareasofchemistryforsynthesizi
7、ngvaluable(2)(a)Haldimann,M.;Zimmerli,B.;Als,C.;Gerber,H.Clin.Chem.1998,44,817-824andrefstherein.(b)Aumont,G.;Tressol,J.-C.Analyst²DepartmentofChemistry,YonseiUniversity.1986,3,841-843.(c)Jalali,F.;Rajabi,M.J.;Bahrami,G.;Shamsipur,³BioactiveMolecularHybrids,Yo
8、nseiUniversity.M.Anal.Sci.2005,21,1533-1535.(1)(a)Katayev,E.A.;Ustynyuk,Y.A.;Sessler,J.L.Coord.Chem.(3)(a)Gunnlaugsson,T.;Glynn,M.;Tocci,G.M.;Kruger,P.E.;Pfeffer,ReV.2006,250,3004-
