Results 131 to 140 of about 12,297 (288)
Advanced Energy Materials, EarlyView.A wide process window is essential for the commercialization of perovskite photovoltaics. Here, we demonstrate an amorphous π‐conjugated passivator having an asymmetric mono‐iodine substituent on a carbazole moiety imparts a high dipole moment, desirable molecular energy levels, and high thickness tolerance, thereby enabling a wide process window in ...
Hyun Seo Kim +17 more
wiley +1 more source
Angewandte Chemie, EarlyView.Multiphotochromic switching is controlled by silicon valency in a diarylethene‐based molecular architecture. Lewis base coordination gates electronic communication between the photochromic units, thereby enabling selective access to distinct switching states.
Lennart Stoess +2 more
wiley +2 more sources
Advanced Intelligent Discovery, EarlyView.Two‐photon polymerization enables high‐resolution microfabrication, but performing alignment when printing multiple structures is difficult. Here, we present a fast, robust, and open‐source protocol for automated alignment on Nanoscribe systems. Achieving ≈0.4 μm accuracy in under 5 s, our protocol reduces time and error in multimaterial printing. This
Daniel Maher +4 more
wiley +1 more source
Angewandte Chemie, EarlyView.Two anionic, T‐shaped, d10 platinum(0) complexes containing a PNP pincer ligand have been isolated and characterized. These complexes react with aliphatic C‐Br bonds under formation of a platinum(II) bromide and an alkyl complex, as well as the homocoupled hydrocarbons.
Vincenz J. Kohler +6 more
wiley +2 more sources
Concentric Rheostat Decoupled 3D Force‐Sensing Module for Smart Table Tennis Training
Advanced Intelligent Systems, EarlyView.A 3D‐printed sensor array intrinsically decouples normal and shear forces through a unique concentric structural design. By integrating piezoresistive, sliding area‐varying capacitive, and concentric rheostat mechanisms, the 12‐sensor module achieves high‐resolution 3D force mapping without complex algorithms.
Zhe Liu +7 more
wiley +1 more source
Angewandte Chemie, EarlyView.An efficient, enantiodivergent synthesis of phosphorylated oxindoles with quaternary stereocenters is achieved via a nickel‐catalyzed intermolecular Heck‐phosphorylation cascade. Employing a single chiral catalyst, either product enantiomer is selectively accessed simply by changing the alkene leaving group. DFT calculations trace this stereodivergence
Haimeng Zhu +4 more
wiley +2 more sources
Polymorphism in a secondary phosphine
Acta Crystallographica Section C Structural ChemistryTwo crystal structures of bis(2,3,5,6-tetramethylphenyl)phosphine, C 20 H 27 P, are reported constituting the first recorded case of polymorphism in a secondary phosphine ( R 2 PH).
Mo Liu, Keith Izod, Paul G. Waddell
openaire +3 more sources
Asymmetric synthesis of phosphines via chiral cyclopalladium(II) complexes promoted reactions
, 2009 260 p.In this thesis, a systematic review of chiral phosphines and hydrophosphination reactions are described in Chapter 1. This chapter reviews the significance of chiral phosphines and their classification: chiral phosphines with Pchiral center(s ...
Yi, Zhang
core +1 more source
Catalytic Enantioselective Intramolecular Aza‐Michael Addition to α,β‐Unsaturated Esters
Angewandte Chemie, EarlyView.A general method for accessing enantioenriched saturated N‐heterocycles via a catalytic enantioselective intramolecular aza‐Michael reaction to α,β‐unsaturated esters is described. A superbasic bifunctional iminophosphorane (BIMP) catalyst was key to enabling reactivity of the high pKa sulfonamide pronucleophile, whilst delivering good to excellent ...
Evan G. W. Rutter +5 more
wiley +2 more sources
A Priori Assessment of the Stereoelectronic Profile of Phosphines and Phosphites
, 2016 This research has demonstrated the utility of a rigorously calibrated, molecular mechanics/semiempirical quantum mechanical protocol for developing stereoelectronic (Tolman) maps for phosphine ligands.
M. Danielle Temple (2988837) +5 more
core +1 more source