Chomchai SuksaiPunnee LeeladeeDisyaphong JainuknanThawatchai TuntulaniNongnuch MuangsinOrawon ChailapakulPalangpol KongsaereeChavang PakavatchaiChulalongkorn UniversityMahidol UniversityPrince of Songkla University2018-06-212018-06-212005-04-18Tetrahedron Letters. Vol.46, No.16 (2005), 2765-2769004040392-s2.0-15944373524https://repository.li.mahidol.ac.th/handle/20.500.14594/16359The heteroditopic receptor 2 containing a crown ether and amidoferrocence groups was synthesized and the binding abilities with various anions are reported in the presence and absence of metal cations. In the presence of Na+, 2 showed positive co-operative binding towards Br-with the binding affinity Kass= 16,096 M-1. Therefore, receptor 2 showed a switched-on binding for Br-in the presence of Na+and a switched-off binding in the absence of Na+. Compound 2 was also found to sense Cl-and Br-electrochemically. © 2005 Elsevier Ltd. All rights reserved.Mahidol UniversityBiochemistry, Genetics and Molecular BiologyChemistryPharmacology, Toxicology and PharmaceuticsArticleSCOPUS10.1016/j.tetlet.2005.02.156