13 Dokumente gefunden

Stepwise synthesis of symmetric and asymmetric Anderson-polyoxometalates for light-driven hydrogen evolution

A new strategy to assemble multifunctional Anderson-type polyoxometalate platforms for the light-driven hydrogen evolution reaction (HER) is presented. The stepwise coordination of precursor metal complexes enables binding of an Ir photosensitizer or a Pt HER catalyst to the bipyridine coordination site.…
Cambridge: The Royal Society of Chemistry, 2025-12-09

A Missing Member of the Anderson–Evans Family: Synthesis and Characterization of the Trimethylolmethane-Capped {MnMo 6 O…

In this work, the synthesis and structural characterization of the smallest possible member of the family of bis -functionalized {MnMo 6 O 24 } Anderson–Evans polyoxometalates (POMs) is reported. The synthesis of the title compound TBA 3 {[HC(CH 2 O) 3 ] 2 MnMo 6 O 18 } ( 1 ) was accomplished by using…
Basel: MDPI, 2025-07-29

Pyrazine‐Functionalized Ru(II)‐Complexes as Visible‐Light Activated Photobases

Excited‐state proton transfer (ESPT) roots in significantly increased acidities or basicities of up to ca. 10 p K a units in the excited state compared to the ground state. While organic photobases are either of “single use” in the case of photobase generators or are limited functionally by their UV…
Weinheim: Wiley-VCH, 2025-06-26

bis (2-Phenylpyridinato)-[4,4′- bis (iodoethynyl)-2,2′-bipyridine]-iridium(III) Hexafluorophosphate

aus: Molbank
This work presents the synthesis and structural characterization of a novel type of biscyclometalated Ir(III) complex, which is equipped with two iodoethynyl moieties on its 2,2′-bipyridine (bpy) ligand. Iodoethynyl moieties represent prominent donor systems for the formation of supramolecular structures…
Basel: MDPI, 2025-06-18

Ultrasensitive Detection of Chemokines in Clinical Samples with Graphene‐Based Field‐Effect Transistors

Due to their ultra‐high sensitivity, solution‐gated graphene‐based field‐effect transistors (SG‐GFET) have been proposed for applications in bio‐sensing. However, challenges regarding the functionalization of GFETs have prevented their applications in clinical diagnostics so far. Here GFET sensors based…
Weinheim: Wiley-VCH, 2024-11-20

Luminescent Platinum(II) Complexes with a Tridentate Caffeine‐Based NHC‐Pincer Ligand : Synthesis, Electrochemistry and Photophysics

A strategy of “greening up” Pt(II) luminophores is presented. For this purpose, caffeine, as a renewable alkaloid and precursor for an N ‐heterocyclic carbene (NHC), is incorporated into a tridentate, pincer‐type ligand framework. A series of luminescent Pt(II) complexes, containing the tridentate bis…
Weinheim: Wiley-VCH, 2024-02-12

Catalysis of a Bis-Caffeine Palladium(II) NHC-Pincer Complex

A tridentate bis -NHC Pd complex, based on caffeine, was studied for its catalytic activity. This complex displayed a high catalytic activity in the Suzuki–Miyaura and Mizoroki–Heck cross-coupling reactions of aryl halides. The Sonogashira cross-coupling was also investigated but reveals a fast plateauing…
Basel: MDPI, 2023-04-13

Photophysical Study on the Rigid Pt(II) Complex [Pt(naphen)(Cl)] (Hnaphen = Naphtho[1,2- b ][1,10]Phenanthroline and Derivatives

The electrochemistry and photophysics of the Pt(II) complexes [Pt(naphen)(X)] (Hnaphen = naphtho[1,2- b ][1,10]phenanthroline, X = Cl or C≡CPh) containing the rigid tridentate C^N^N -coordinating pericyclic naphen ligand was studied alongside the complexes of the tetrahydro-derivative [Pt(thnaphen)(X)]…
Basel: MDPI, 2022-10-18

Comparing Microwave and Classical Synthesis of Oxymethylene Dimethyl Ethers

Polyoxymethylene dimethyl ethers (OME n ) are considered as substituents or additives for fossil diesel fuel. Efficiency of the synthesis is crucial for the development of industrial scale production plants. Therefore, the design of suitable catalysts and the efficient heating play important roles in…
Weinheim: Wiley, 2022-07-19

Noble Metal Complexes of a Bis-Caffeine Containing NHC Ligand

N -Heterocyclic carbenes (NHCs) have seen more and more use over the years. The go-to systems that are usually considered are derivatives of benzimidazole or imidazole. Caffeine possesses an imidazole unit and was already utilized as a carbene-type ligand; however, its use within a tridentate bis-NHC…
Basel: MDPI, 2022-07-05

Hydrodynamic Characteristics and Conformational Parameters of Ferrocene-Terpyridine-Based Polymers

Nowadays, the study of metallopolymers is one of the fastest growing areas of polymer science. Metallopolymers have great potential for application in multiple technological and various biomedical processes. The macromolecules with the possibility of varying the number and type of metal ions along the…
Basel: MDPI, 2022-04-27

Metallo-Supramolecular Complexation Behavior of Terpyridine- and Ferrocene-Based Polymers in Solution—A Molecular Hydrodynamics…

The contribution deals with the synthesis of the poly(methacrylate)-based copolymers, which contain ferrocene and/or terpyridine moieties in the side chains, and the subsequent analysis of their self-assembly behavior upon supramolecular/coordination interactions with Eu 3+ and Pd 2+ ions in dilute solutions.…
Basel: MDPI, 2022-02-26

Ruthenium(II)-bis(4′-(4-ethynylphenyl)-2,2′:6′, 2″-terpyridine) — A versatile synthon in supramolecular chemistry. Synthesis…

Abstract A homoleptic ethynyl-substituted ruthenium(II)-bisterpyridine complex representing a versatile synthon in supramolecular chemistry was synthesized and analyzed by NMR spectroscopy, mass spectrometry and X-ray diffractometry. Furthermore, its photophysical properties were detailed by UV/Vis absorption,…
Berlin: de Gruyter, 2011-12-01