Zn(II) Schiff base complexes are good precursors for preparation of ZnO nanoparticles which find several biomedical applications. Herein, a fluorescent hexanuclear Zn(II) Schiff base complex [Zn(II) 6 (L−Me) 6 (MeOH) 2 ]⋅12MeOH(1) [H 2 L-Me=diprotic Schiff base ligand] has been synthesized and characterized by single crystal X-ray diffraction, NMR spectroscopy and mass spectrometry. Fluorescence properties of this Zn(II) 6 -complex have also been studied in solid state and solution. Lifetime measurement and quantum yield calculation have been performed to further investigate the fluorescence properties. Temperature dependent stability of complex 1 has been studied in air and inert gas atmospheres. Fluorescent ZnO nano-particles were prepared by thermal decomposition of 1 at 400 °C and higher temperatures under aerobic atmosphere. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Saroj Kumar Kushvaha

Bhaskaran Shankar

N. V.T.Sai Manoj Gorantla

IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

ChemistrySelect

This work describes employment of two structurally similar Schiff-base ligands (H2L and H2L-Me) [H2L = C14H13NO3 and H2L-Me = C15H15NO3] for the synthesis of three homo-metallic ZnII and two hetero-bimetallic ZnII–NiII based multinuclear complexes {[ZnII4L4(MeOH)2] (1), [ZnII5(L)5(MeOH)2]·MeOH·CH3CN (2), [(L)2ZnII4Cl2(µ3-OMe)2(MeOH)2]·2MeOH (3), [NiII2ZnII2(L)4(MeOH)2] (4) and [Ni3Zn2(L-Me)5(H2O)2]·MeOH·CH3CN (5)} with different interesting structural core topologies. All of these complexes (1–5) have been characterized by single-crystal X-ray diffraction (XRD), elemental analysis, and UV/Vis and Fourier transform infrared (FTIR) spectroscopy. The fluorescence properties of ZnII-containing complexes have been studied by measuring fluorescence spectra in solid state and solution phase. The luminescence behavior has been further quantified by fluorescence life-time and quantum yield measurements. Using high resolution mass spectrometry (HR-MS), the molecular integrity of complexes in the solution phase has been demonstrated by simulating isotopic distribution of molecules with theoretically calculated molecular isotopic patterns. The magnetic properties of ZnII–NiII containing complexes (4–5) have been studied in the temperature range from 5 K to 300 K. Thermogravimetric analysis (TGA) has been carried out to study the thermal stabilities of these complexes (1–5). © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

European Journal of Inorganic Chemistry

Isolation and Characterization of Different Homometallic and Heterobimetallic Complexes of Nickel and Zinc Ions by Controlling Molar Ratios and Solvents

A series of six hetero-bimetallic complexes having umbrella shape topology and general formula (L)2CuLn(NO3)(Ph3PO) have been synthesized by reacting a methanolic solution of diprotic ligand (H2L) [(E)-2-(((2-hydroxyphenyl)imino)methyl)-6-methoxyphenol] and co-ligand Ph3P=O with CuCl2.2H2O and Ln(NO3)3⋅6H2O (Ln= Gd(1), Tb(2),Dy(3), Ho(4), Er(5) and Y(6)) in the presence of triethylamine base. The iso-structural complexes (1-6) have been characterized by Single crystal XRD measurement. Elemental analysis, EPR, IR and UV/Vis spectra have been recorded to further characterise these complexes. The direct current (dc) and alternating current (ac) magnetic susceptibility measurements has been carried out to study magnetic properties of the complexes. Thermogravimetric analysis (TGA) has also been done to assess thermal stability of the complexes. © 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

A Series of Umbrella-Shape Copper-Lanthanides Based Mixed Metallic Coordination Complexes

Arabian Journal of Chemistry

Nanoparticles: Properties, applications and toxicities

Colloids and Surfaces B: Biointerfaces

New zinc(II) N4 tetradentate Schiff base complex: A potential cytotoxic metallodrug and simple precursor for the preparation of ZnO nanoparticles

Drug Discovery Today

Zinc oxide nanoparticles: a promising nanomaterial for biomedical applications

Luminescence

Synthesis of ZnO nanoparticles using a hydrothermal method and a study its optical activity

New Journal of Chemistry

Structural diversity of Zn(ii) based coordination polymers constructed from a flexible carboxylate linker and pyridyl co-linkers: fluorescence sensing of nitroaromatics

A Fluorescent Hexanuclear Zn(II) Complex

Journal	Data powered by TypesetChemistrySelect
Publisher	Data powered by TypesetWiley-Blackwell
ISSN	23656549
Open Access	No