Despite the excellent photovoltaic properties achieved by perovskite solar cells at the laboratory scale, hybrid perovskites decompose in the presence of air, especially at high temperatures and in humid environments. Consequently, high‐efficiency perovskites are usually prepared in dry/inert environments, which are expensive and less convenient for scale‐up purposes. Here, a new approach based on the inclusion of an in situ polymerizable ionic liquid, 1,3‐bis(4‐vinylbenzyl)imidazolium chloride ([bvbim]Cl), is presented, which allows perovskite films to be manufactured under humid environments, additionally leading to a material with improved quality and long‐term stability. The approach, which is transferrable to several perovskite formulations, allows efficiencies as high as 17% for MAPbI3 processed in air % relative humidity (RH) ≥30 (from an initial 15%), and 19.92% for FAMAPbI3 fabricated in %RH ≥50 (from an initial 17%), providing one of the best performances to date under similar conditions.

No abstract

No abstract

An ovel nickel pincer cofactor was recently discovered in lactate racemase.R eported here are three synthetic nickel pincer complexes that are both structural and functional models of the pincer cofactor in lactate racemase.D FT computations suggest the ipso-carbon atom of the pyridinium pincer ligands act as ah ydride acceptor for lactate isomerization, whereas an organometallic pathwayi nvolving nickelmediated b-hydride elimination is less favored.

Cleavage of dihydrogen is an important step in the industrial and enzymatic transformation of N 2 into ammonia. The reversible cleavage of dihydrogen was achieved under mild conditions (room temperature and 1atmosphere of H 2 ) by the molecular uranium nitride complex, [Cs{U(OSi-(O t Bu) 3 ) 3 } 2 (m-N)] 1, leading to ar are hydride-imide bridged diuranium(IV) complex, [Cs{U(OSi(O t Bu) 3 ) 3 } 2 (m-H)(m-NH)], 2 that slowlyr eleases H 2 under vacuum. This complex is highly reactive and quickly transfers hydride to acetonitrile and carbon dioxide at room temperature,a ffording the ketimide-and formate-bridged U IV species [Cs{U(OSi-(O t Bu) 3 ) 3 } 2 (m-NH)(m-CH 3 CHN)], 3 and [Cs{U(OSi-(O t Bu) 3 ) 3 } 2 (m-HCOO)(m-NHCOO)], 4.