Author: Mohammed J. Al-marri

0000000000173547

AUTHOR

Mohammed J. Al-marri

0000-0002-9223-487x

showing 4 related works from this author

Distinct photodynamics of κ-N and κ-C pseudoisomeric iron(ii) complexes

2021

Two closely related FeII complexes with 2,6-bis(1-ethyl-1H-1,2,3-triazol-4yl)pyridine and 2,6-bis(1,2,3-triazol-5-ylidene)pyridine ligands are presented to gain new insights into the photophysics of bis(tridentate) iron(II) complexes. The [Fe(N^N^N)2]2+ pseudoisomer sensitizes singlet oxygen through a MC state with nanosecond lifetime after MLCT excitation, while the bis(tridentate) [Fe(C^N^C)2]2+ pseudoisomer possesses a similar 3MLCT lifetime as the tris(bidentate) [Fe(C^C)2(N^N)]2+ complexes with four mesoionic carbenes. Financial support from the Deutsche Forschungsge-meinschaft [DFG, Priority Program SPP 2102] "Light-controlled reactivity of metal complexes" (BA 4467/7-1, LO 714/11-1, …

TrisDenticitysynthesisPyridinepyridine derivativecarbenoidIron compoundsCatalysisexperimental studychemistry.chemical_compoundPyridineMaterials Chemistryphysical chemistrycontrolled studyChemistrySinglet oxygenPyridine ligandsSinglet oxygenMetals and AlloysMesoionicGeneral ChemistryNanosecondPyridine ligandSurfaces Coatings and FilmsElectronic Optical and Magnetic Materialsunclassified drugCrystallographyPhotophysicsiron complexisomerCeramics and CompositesCarbeneschemical structurephotodynamicsphysicsExcitationchemical parameters

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Size-And Wavelength-Dependent Two-Photon Absorption Cross-Section of CsPbBr3 Perovskite Quantum Dots

2017

All-inorganic colloidal perovskite quantum dots (QDs) based on cesium, lead, and halide have recently emerged as promising light emitting materials. CsPbBr3 QDs have also been demonstrated as stable two-photon-pumped lasing medium. However, the reported two photon absorption (TPA) cross sections for these QDs differ by an order of magnitude. Here we present an in-depth study of the TPA properties of CsPbBr3 QDs with mean size ranging from 4.6 to 11.4 nm. By using femtosecond transient absorption (TA) spectroscopy we found that TPA cross section is proportional to the linear one photon absorption. The TPA cross section follows a power law dependence on QDs size with exponent 3.3 +- 0.2. The …

PhotonSDG 16 - PeaceExcitonAnalytical chemistryPhysics::Opticsquantum dots02 engineering and technology010402 general chemistry01 natural sciencesTwo-photon absorptionMolecular physicsCsPbBr3 Perovskite Quantum DotsCondensed Matter::Materials ScienceUltrafast laser spectroscopyGeneral Materials SciencePhysical and Theoretical ChemistrySpectroscopyAbsorption (electromagnetic radiation)Perovskite (structure)ta114ChemistrySDG 16 - Peace Justice and Strong Institutions021001 nanoscience & nanotechnologyCondensed Matter::Mesoscopic Systems and Quantum Hall Effect/dk/atira/pure/sustainabledevelopmentgoals/peace_justice_and_strong_institutionsJustice and Strong Institutions0104 chemical sciencesQuantum dot0210 nano-technology

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CCDC 2050317: Experimental Crystal Structure Determination

2021

Related Article: Philipp Dierks, Ayla Kruse, Olga S. Bokareva, Mohammed J. Al-Marri, Jens Kalmbach, Marc Baltrun, Adam Neuba, Roland Schoch, Stephan Hohloch, Katja Heinze, Michael Seitz, Oliver Kühn, Stefan Lochbrunner, Matthias Bauer|2021|Chem.Commun.|57|6640|doi:10.1039/D1CC01716K

Space GroupCrystallographyCrystal Systembis[26-bis(1-ethyl-1H-123-triazol-4-yl)pyridine]-iron(ii) bis[hexafluorophosphate] dichloromethane solvateCrystal StructureCell ParametersExperimental 3D Coordinates

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CCDC 2049729: Experimental Crystal Structure Determination

2021

Space GroupCrystallographybis(44'-(pyridine-26-diyl)bis(1-ethyl-3-methyl-123-triazole-5-ylidene))-iron(ii) bis(hexafluorophosphate) dichloromethane solvateCrystal SystemCrystal StructureCell ParametersExperimental 3D Coordinates

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