Synthesis and characterization of chromone-based ligand and its fluorescence property towards Zn2+

International Fundamentum Science Symposium 2018

自然科学;工业技术

Arifin, W.M.H.^1 ; Juahir, Y.^1 ; Ali, N.M.^1 ; Bakar, N.A.^1 ; Ahmad, M.S.^1 ; Supian, F.L.^2 ; Osman, U.M.^3

Department of Chemistry, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, Tanjong Malim, Perak

35900, Malaysia^1

Department of Physic, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, Tanjong Malim, Perak

35900, Malaysia^2

School of Fundamental Science, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu

21030, Malaysia^3

关键词: Emission spectrums;    Fluorescence intensities;    Fluorescence properties;    Fluorescence spectrophotometer;    Fourier transform infra reds;    Gas chromatography-mass spectrometries (GC-MS);    Spectroscopic technique;    Synthesis and characterizations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/440/1/012015/pdf
DOI  :  10.1088/1757-899X/440/1/012015

来源: IOP

【 摘 要 】

Zinc (Zn) is a type of element that are commonly found in the Earth's environment and may be originated either naturally from the environment or produced by human activities. Zn has been identified as a hazardous metal which can give harmful effects to human health and Earth's environment. Therefore, it is very important to develop a simplest method which does not require laborious work in order to detect Zn metal ions. Ligand of AFCMSH was synthesized by the mean of reflux reaction between 2-amino-3-formylchromone (AFC) and 4methylbenzenesulfonylhydrazide (MSH). The molecular structure of the ligand in the ground state was optimized using density functional theory (DFT/B3LYP) method with 6-311G(d,p) basis set. Characterization of ligand was conducted using spectroscopic techniques such as Fourier Transform Infra-Red spectroscopy (FT-IR), Gas Chromatography Mass Spectrometry (GC-MS), Nuclear Magnetic Resonance spectroscopy (NMR) and Ultraviolet-visible spectroscopy (UV-VIS). Meanwhile the fluorescence property of ligand in the presence of metal cations was recorded using Fluorescence Spectrophotometer. Ligand shows almost no fluorescence property in the presence of various metal ions except for Zn2+ ion when observed under UV light. Interestingly, ligand exhibits a remarkable fluorescence response by giving yellow-green fluorescence with strong fluorescence intensity in the emission spectrum at 501nm at excitation of 375 nm upon addition of one equivalent of Zn2+.