Transition metal complexes of 4'-(p-nitrophenyl)-2,2':6',2"-terpyridine as fluorosensor sodium ion

Agustino, D. M.A. Ovika

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1 Citation (Scopus)


Ligand 4'-(p-nitrophenyl)-2,2':6',2"-terpyridine has been synthesized using Krö hnke method by aldol condensation reaction. The solid brown precipitate was collected and resulted 40% yield. The ligand was characterized by 1H-NMR spectrometer, IR spectrophotometer, elemental analyzer, UV-Vis spectrometer, and spectrofluorometer. The complexation of ligand was done by chelating method with transition metal (Cu2+, Zn2+). The complex compounds have been confirmed by UV-Vis spectrophotometer from absorbance spectrum data. The data showed a new peak at wavelength 236 nm for Cu2+ complex and 233 nm for Zn2+ complex. The application of ligand 4'-(p-nitrophenyl)-2,2':6',2"-terpyridine and complex compounds is as fluorosensor of sodium ion. The intensity of fluorescence was determined by spectrofluorometer. The addition of various concentrations of sodium ion into ligand and complex compounds (Cu2+, Zn2+) changed the intensity of fluorescence. The fluorescence data of ligand showed the on-off type while Cu and Zn complex showed the off-on type. The on-off type fluorescence was indicated by decreasing intensity and the off-on by increasing intensity. Both ligand and complex compound showed a wavelength shift when sodium ion was added into solution.

Original languageEnglish
Article number012036
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 2 May 2017
EventInternational Symposium on Current Progress in Functional Materials 2016, ISCPFM 2016 - Bali, Indonesia
Duration: 26 Jul 201627 Jul 2016


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