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عبير محمد علي بن بعيجان

Associate Professor

عضو هيئة التدريس

كلية العلوم
مبنى 5, الدور الثالث,رقم المكتب 258
publication
Journal Article
2020

A fluorescent Cu(II) complex as a dual functional sensor for selective and sensitive detection of acetone and Cd(II) pollutants

, Mohd. Muddassir, * Abdullah Alarifi, Mohd Afzal, Khulud Abdullah Alshali, Naaser A. Y. Abduh and Abeer Beagan . 2020

In this study, Cu2+ perchlorate complexes of 3,5-dimetylpyrazole(dmpy), namely
[Cu(dmpy)3(H2O)2](H2O)(ClO4)2 (1), were prepared and characterized by X-ray diffraction (XRD),
thermogravimetric analysis (TGA), infrared (IR) spectroscopy, elemental analysis, mass spectrometry, and
ultraviolet visible (UV-Vis) spectroscopy. It was determined that Cu2+ coordinated to the nitrogen atoms
of three dmpy molecules as well as to the oxygen atoms of two H2O molecules in a square pyramidal
geometry. To balance the charge, two uncoordinated perchlorate anions and one H2O molecule were
also present in the lattice. The resulting Cu2+ complex was involved in extensive hydrogen bonding,
which stabilized the structure. The fluorescence properties of complex 1 were studied in acetonitrile at
room temperature upon the addition of different organic solvents. It was confirmed that the complex
exhibited remarkable acetone selectivity via a fluorescence quenching mechanism. At low
concentrations, the fluorescence intensities were nearly completely quenched via a turn-off mode.
Moreover, complex 1 displayed exceptional selectivity, fast detection time, and high sensitivity for Cd2+
in aqueous solutions via a fluorescence enhancement mechanism (turn-on mode). Hence, the prepared
complex showed potential for application in Cd2+ detection. Notably, in an aqueous solution, complex 1
exhibited highly selective fluorescence enhancement effects (turn-on mode) with respect to Cd2+ and
was not affected by the interference of other metal ions

Publication Work Type
paper
Volume Number
10
Issue Number
42137
Magazine \ Newspaper
RSC Advances
Pages
42137
more of publication
publications

In this study, Cu2+ perchlorate complexes of 3,5-dimetylpyrazole(dmpy), namely
[Cu(dmpy)3(H2O)2](H2O)(ClO4)2 (1), were prepared and characterized by X-ray diffraction (XRD),

by Mohd. Muddassir, * Abdullah Alarifi, Mohd Afzal, Khulud Abdullah Alshali, Naaser A. Y. Abduh and Abeer Beagan
2020
publications

This work presents the synthesis of pH-responsive poly(2-(diethylamino) ethyl methacrylate)
(PDEAEMA) brushes anchored on hollow mesoporous silica nanoparticles (HMSN-PDEAEMA)
via a…

by Abeer Beagan 1,*,y , Shatha Lahmadi 1, Ahlam Alghamdi 1, Majed Halwani 2 , Mohammed Almeataq 3, Abdulaziz Alhazaa 4 , Khalid Alotaibi 1 and Abdullah Alswieleh
2020
publications

This paper introduces the synthesis of well-defined 2-(tert-butylamino)ethyl
methacrylate-b-poly(ethylene glycol) methyl ether methacrylate diblock copolymer, which has
been grafted…

by Abdullah M Alswieleh 1,*,y, AbeerM Beagan 1,y, Bayan M Alsheheri 1, Khalid M Alotaibi 1, Mansour D Alharthi 1 and Mohammed S Almeataq
2020