Unprecedented stabilization of the copper(I) oxidation state is demonstrated for the complex cation [Cu(bfp) ] (1) due to the steric and electronic effects of the CF groups (E (Cu /Cu )=+1.55 V vs. SCE). The redox existence range of the copper(I) species is remarkably high at 2.77 V. It is emissive in solution at room temperature and shows great potential as a photocatalyst; in the excited state it is a very potent photooxidant.
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http://dx.doi.org/10.1002/(SICI)1521-3773(19980619)37:11<1556::AID-ANIE1556>3.0.CO;2-W | DOI Listing |
Angew Chem Int Ed Engl
December 2024
Guangdong Provincial Key Laboratory of New Energy Materials Service Safety, Shenzhen Key Laboratory of New Information Display and Storage Materials, College of Materials Science and Engineering, Shenzhen University, Shenzhen, 518055, P. R. China.
Although two-coordinate Cu(I) complexes are highly promising low-cost emitters for organic light-emitting diodes (OLEDs), the exposed metal center in the linear coordination geometry makes them suffer from poor stability. Herein, we describe a strategy to develop stable carbene-Cu-amide complexes through installing intramolecular noncovalent Cu⋅⋅⋅H interactions. The employment of 13H-dibenzo[a,i]carbazole (DBC) as the amide ligand leads to short Cu⋅⋅⋅H distances in addition to the Cu-N coordination bond.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
December 2024
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China.
Hetero-metal doping or substitution to create alloy clusters is a highly appealing strategy for improving physicochemical characteristics as well as tailoring optical and electronic properties, although high-yield synthesis of alloy clusters with precise positioning of doped metals is a daunting challenge. Herein, we manifest rational synthesis of chiral alloy cluster enantiomers R/S-AgCu in 85 %-87 % yield by replacing one Ag(I) atom with Cu(I) in homometallic clusters R/S-Ag, achieving circularly polarized luminescence (CPL) with a quantum yield beyond 90 %. As a small energy gap (ca.
View Article and Find Full Text PDFChem Sci
November 2024
Department of Chemistry and Chemical Biology, Rutgers University 123 Bevier Road Piscataway NJ 08854 USA
Scintillation-based X-ray detection has been widely used in various fields from medical diagnostics to security. In this study, we report four new CuI-based hybrid materials consisting of anionic inorganic chains coordinated to cationic ligands. Due to their unique bonding nature, these compounds demonstrate high stability, solution processability, and efficient photoluminescence with photoluminescence quantum yields (PLQYs) reaching ∼85%.
View Article and Find Full Text PDFDalton Trans
December 2024
Department of Chemistry, University of Houston, 3585 Cullen Blvd, Room 112, Houston, TX, 77204-5003, USA.
A series of heteroleptic copper(I) β-diketiminate triarylphosphine complexes is reported, having the general formula Cu(RNacNac)(PPh), where RNacNac is a substituted β-diketiminate and PPh is a triphenylphosphine derivative. A total of five different RNacNac ligands and three different triarylphosphines are used to assemble the nine complexes. The syntheses, X-ray crystal structures, cyclic voltammograms, and UV-vis absorption spectra of all compounds are described.
View Article and Find Full Text PDFInorg Chem
October 2024
Section for Solid State and Theoretical Inorganic Chemistry, Institute of Inorganic Chemistry, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen Germany.
A novel and more efficient synthesis of Cu(CNH) is presented through a salt-metathesis reaction using copper(I) chloride and sodium hydrogen cyanamide. This synthesis yields a melaminate trianion through the cyclotrimerization of (HNCN) ions, offering an alternative route to the deprotonation of melamine for synthesizing melaminate. The reaction is analyzed via differential thermal analysis.
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