Pailin SrisuratsiriPhongthon KanjanasiriratArthid ChairongduaPalangpon KongsaereeMahidol UniversityKasetsart University Sriracha Campus2018-12-212019-03-142018-12-212019-03-142017-01-01Tetrahedron Letters. Vol.58, No.32 (2017), 3194-319918733581004040392-s2.0-85021961879https://repository.li.mahidol.ac.th/handle/123456789/41988© 2017 Elsevier Ltd A rhodamine-alkyne conjugate has been developed for selective detection of Au3+in a reversible manner. Rhodamine was coupled with o-phenylenediamine bearing a propargyl moiety. The probe displayed high selectivity and sensitivity toward Au3+with a 148-fold “turn-on” fluorescence response in EtOH-H2O (1:1 v/v). The stoichiometry of the chemosensor and Au3+was 1:1 based on the Job plot analysis with the detection limit of 10.5 nM. The chemosensor is membrane permeable and capable of monitoring Au3+in cultured HeLa cells.Mahidol UniversityBiochemistry, Genetics and Molecular BiologyChemistryArticleSCOPUS10.1016/j.tetlet.2017.07.014