Shiraz Ahmed Siddiqui

ORCID: 0000-0003-3019-7302
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About
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Research Areas
  • Metal-Organic Frameworks: Synthesis and Applications
  • Magnetism in coordination complexes
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Metal and Thin Film Mechanics
  • Diamond and Carbon-based Materials Research
  • Metal complexes synthesis and properties
  • Tribology and Wear Analysis
  • Lanthanide and Transition Metal Complexes
  • Nanocluster Synthesis and Applications
  • Lubricants and Their Additives
  • Melamine detection and toxicity
  • Crystal structures of chemical compounds
  • Cryospheric studies and observations
  • Organometallic Compounds Synthesis and Characterization
  • Catalysis and Oxidation Reactions
  • Smart Materials for Construction
  • Advanced materials and composites
  • Solid-state spectroscopy and crystallography
  • Advanced NMR Techniques and Applications
  • Winter Sports Injuries and Performance

University of Vienna
2020-2025

University of Miskolc
2019-2022

TU Wien
2021

Czech Academy of Sciences, J. Heyrovský Institute of Physical Chemistry
2021

The global renewable energy industry awaits new battery technologies that power the future. Here we conceptualize and fabricate a halogen-ion is charged up via halogenation of water-stable metal-organic framework (MOF) made trinuclear copper triazole. A cell uses pure imidazolium ionic liquid electrolyte, binder-free carbon nanotube electrodes, one which accommodates microcrystals MOF. It offers redox potentials greater than 0.6 V, densities specific capacitances as high 7 Wh/kg 10 mAh/g,...

10.26434/chemrxiv-2025-9tf68 preprint EN cc-by 2025-03-13

Synthesis of crystalline materials is elemental in the field coordination chemistry towards optical applications.

10.1039/d1ma00866h article EN cc-by Materials Advances 2021-11-22

Abstract The present work deals with the characterization of scratch resistance two different types coatings, i.e., chromium nitride (CrN) and diamond-like carbon prepared on X42Cr13/W (1.2083) plastic mold tool steel by physical vapor deposition plasma-enhanced chemical deposition, respectively. Our study focuses influence duplex treatment, plasma nitriding + ceramic coating steel. An advanced 3D testing methodology has been used to investigate adhesion damage mechanism during scratching....

10.1007/s11665-022-06812-6 article EN cc-by Journal of Materials Engineering and Performance 2022-03-28

The synthesis of quality single crystals is central to materials chemistry for optical, magnetic, and electronic device applications.

10.1039/d0tc03878d article EN cc-by Journal of Materials Chemistry C 2020-12-09

Coordination complexes and polymers are central in inorganic materials chemistry as a variety of metal centers coordination geometries lead to diverse range interesting properties. Here, size structure control gem-like quality monocrystals is demonstrated at room temperature. Using the same set precursors, copper-to-melamine molar ratio adjusted synthesize either novel complex dinuclear copper melamine (Cu2M1), or barely-studied polymer zigzag copper-chlorine chains (Cu4M1). Crystals former...

10.1039/d1ra02903g article EN cc-by RSC Advances 2021-01-01

Tribological investigations are of great importance, especially in the case novel combinations materials used for tribosystem. In current research, multilayer diamond-like carbon coating deposited by plasma enhanced chemical vapour deposition on an X42Cr13 plastic mould tool steel is studied with two different surface conditions substrate. On one hand, it secondary hardened; other additively nitrided preceding coating. This latter combined treatment, called duplex has increasingly wide range...

10.3390/ceramics5040086 article EN cc-by Ceramics 2022-12-08

A novel molecular assembly of a cobalt-sulfate coordination polymer and melamine is synthesized under acidic conditions. Bar-shaped pink monocrystals as long 1 mm are found to align along magnetic field lines in the proximity strong magnet. Magnetometry shows no hysteresis at temperatures down 2 K but instead anisotropy antiferromagnetic coupling. X-ray diffraction on single crystal reveals that chains shortest lattice vector or crystal's axis. The alignment flux can be attributed single-ion...

10.1021/acsomega.2c07556 article EN cc-by-nc-nd ACS Omega 2023-01-09

Introduction & Purpose The low friction coefficient of a ski on snow is due to the formation meltwater layer between base and surface. It widely accepted theory that this frictional heating (Bowden Hughes, 1939). experimental evidence regarding has been challenging task. This because dynamically created most likely refreezing immediately once heat input terminated. Ambach Mayr (1981) measured change in capacitance probe quantify thickness layer. They reported 4-20 µm during downhill...

10.36950/2024.4ciss010 article EN cc-by-nc Current Issues in Sport Science (CISS) 2024-09-23

The present work reports the synthesis, structure, and magnetic properties of a one-dimensional coordination polymer made copper(II) chloride 1,2,4- triazole. is synthesized in hydrochloric acid at room temperature. structure determination by single crystal X-ray diffraction reveals an array copper atoms bridged via two chlorine Magnetisation data show no hysteresis temperatures down to 2 K, but suggest antisymmetric exchange antiferromagnetic coupling between neighbouring spins Cu(II) ions....

10.26434/chemrxiv-2024-1hrrp preprint EN cc-by 2024-12-10

Wear, corrosion and fatigue are among the most important mechanisms that lead to surface damage, which, ultimately, leads failure of components. There is an increasing demand for reducing failures related costs due wear shortcomings heavily loaded engineering Thus, application technologies gives a great potential saving resources providing improved technology.
 The presented research work involves characterization duplex treated i.e. plasma nitrided (at two different temperatures 520...

10.35925/j.multi.2019.1.1 article EN Multidiszciplináris Tudományok 2019-05-03

A novel molecular assembly of cobalt-sulfite coordination polymer and melamine is synthesized under acidic conditions. Bar-shaped pink monocrystals as long 1 mm are found to align along magnetic field lines at the proximity a strong magnet. Magnetometry shows no hysteresis temperatures down 2K, but anisotropy antiferromagnetic coupling. X-ray diffraction on single crystal reveals that chains shortest lattice vector or crystal's axis. The alignment flux can be attributed single-ion results in...

10.26434/chemrxiv-2022-dgrrl preprint EN cc-by-nc-nd 2022-05-31

CrN coatings are widely used in the industry due to their excellent mechanical features and outstanding wear corrosion resistance. Using scratch ball-on-disk tests, current study deals with tribological characterisation of deposited onto an X42Cr13 plastic mould tool steel. Two surface conditions secondary-hardened substrate compared—the plasma nitrided (duplex treated) un-nitrided (simply coated) states. The appropriate combination secondary hardening providing maximum toughness...

10.3390/ceramics5040077 article EN cc-by Ceramics 2022-11-24

Synthesis of crystalline materials is crucial in the field ofcoordination chemistry. In present work, reactionbetween copper and benzene-1,3,5-tricarboxylic acid(BTC) ligand controlled by adjusting pH thereaction mixture to synthesize two structures:metal-organic framework HKUST-1 one-dimensionalcoordination polymer Cu(BTC).3H 2 O. Single crystals bothstructures are studied multi-laser Raman spectroscopy.It found that both exhibit photoluminescence.Also, transformation into O isdemonstrated....

10.26434/chemrxiv.14229254.v1 preprint EN cc-by-nc-nd 2021-03-18

<div>Synthesis of crystalline materials is crucial in the field of</div><div>coordination chemistry. In present work, reaction</div><div>between copper and benzene-1,3,5-tricarboxylic acid</div><div>(BTC) ligand controlled by adjusting pH the</div><div>reaction mixture to synthesize two structures:</div><div>metal-organic framework HKUST-1 one-dimensional</div><div>coordination polymer...

10.26434/chemrxiv.14229254 preprint EN cc-by-nc-nd 2021-03-18

Coordination complex and polymer are central in inorganic material chemistry as a variety of both metal centers coordination geometries lead to diverse range interesting properties. Here, size structure control gems-like quality monocrystals demonstrated at room temperature. From the same set precursors, but copper-to-melamine molar ratio is adjusted synthesize either novel dinuclear copper melamine (Cu2M1) or barely-studied zigzag copper-chlorine chains (Cu4M1). Crystals former dark green...

10.26434/chemrxiv.14161403.v1 preprint EN cc-by-nc-nd 2021-03-05

Coordination complex and polymer are central in inorganic material chemistry as a variety of both metal centers coordination geometries lead to diverse range interesting properties. Here, size structure control gems-like quality monocrystals demonstrated at room temperature. From the same set precursors, but copper-to-melamine molar ratio is adjusted synthesize either novel dinuclear copper melamine (Cu2M1) or barely-studied zigzag copper-chlorine chains (Cu4M1). Crystals former dark green...

10.26434/chemrxiv.14161403 preprint EN cc-by-nc-nd 2021-03-05
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