Photodecomposition of Metal Nitrate and Chloride Compounds Yields Amorphous Metal Oxide Films

10.1021/jacs.7b11064

2017-12-07

UV light is found to trigger the decomposition of MClx or M(NO3)x (where M = Fe, Co, Ni, Cu, or Zn) to form uniform, amorphous films of metal oxides. This process does not elevate the temperature of the substrate and thus conformal films can be coated on a ra...

Regio- and Chemoselective Hydrogenation of Dienes to Monoenes Governed by a Well-Structured Bimetallic Surface

10.1021/jacs.7b08792

2017-12-07

Unprecedented surface chemistry, governed by specific atomic arrangements and the steric effect of ordered alloys, is reported. Rh-based ordered alloys supported on SiO2 (RhxMy/SiO2, M = Bi, Cu, Fe, Ga, In, Pb, Sn, and Zn) were prepared and tested as catalyst...

Interplay between CN– Ligands and the Secondary Coordination Sphere of the H-Cluster in [FeFe]-Hydrogenases

10.1021/jacs.7b08735

2017-12-07

The catalytic cofactor of [FeFe]-hydrogenses (H-cluster) is composed of a generic cubane [4Fe-4S]-cluster (4FeH) linked to a binuclear iron–sulfur cluster (2FeH) that has an open coordination site at which the reversible conversion of protons to molecular hyd...

Chemical Cosubstitution-Oriented Design of Rare-Earth Borates as Potential Ultraviolet Nonlinear Optical Materials

10.1021/jacs.7b11263

2017-12-07

A chemical cosubstitution strategy was implemented to design potential ultraviolet (UV) and deep-UV nonlinear optical (NLO) materials. Taking the classic β-BaB2O4 as a maternal structure, by simultaneously replacing the Ba2+ and [B3O6]3– units with monovalant...

A Gigantic Molecular Wheel of {Gd140}: A New Member of the Molecular Wheel Family

10.1021/jacs.7b11112

2017-12-06

Nanoscale inorganic wheel-shaped structures are one of the most striking types of molecular aggregations. Here, we report the synthesis of a gigantic lanthanide wheel cluster containing 140 Gd3+ atoms. As the largest lanthanide cluster reported thus far, {Gd1...

Stable Push–Pull Disilene: Substantial Donor–Acceptor Interactions through the Si═Si Double Bond

10.1021/jacs.7b09989

2017-12-06

The push–pull effect has been widely used to effectively tune π-electron systems. Herein, we report the synthesis and properties of 1-amino-2-boryldisilene 1 as the first push–pull disilene. Its spectroscopic and structural features show substantial interacti...

B–N Lewis Pair Functionalization of Anthracene: Structural Dynamics, Optoelectronic Properties, and O2 Sensitization

10.1021/jacs.7b11062

2017-12-06

The judicial placement of main group elements in conjugated structures is emerging as a key route to novel functional hybrid materials. We demonstrate here that the formation of B–N Lewis pairs at the periphery of anthracene leads to buckling of the backbone ...

Ex Vivo Tracking of Endogenous CO with a Ruthenium(II) Complex

10.1021/jacs.7b11158

2017-12-06

A two-photon fluorescent probe based on a ruthenium(II) vinyl complex is capable of selectively detecting carbon monoxide in cells and ex vivo using mice with a subcutaneous air pouch as a model for inflammation. This probe combines highly selective and sensi...

Free Carrier Emergence and Onset of Electron–Phonon Coupling in Methylammonium Lead Halide Perovskite Films

10.1021/jacs.7b09508

2017-12-06

Sub-10 fs resolution pump–probe experiments on methylammonium lead halide perovskite films are described. Initial response to photoexcitation is assigned to localized hot excitons which dissociate to free carriers. This is attested to by band integrals of the...

Titanium-Based Hydrides as Heterogeneous Catalysts for Ammonia Synthesis

10.1021/jacs.7b08891

2017-12-06

The problem of activating N2 and its subsequent hydrogenation to form NH3 has been approached from many directions. One of these approaches involves the use of transition metal hydride complexes. Recently, transition metal hydride complexes of Ti and Ta have ...