3115-66-0Relevant articles and documents
Study on photovoltaic stability and performance by incorporating tetrabutyl phosphonium iodide into the active layer of a perovskite type photovoltaic cell
Garcia-Gutierrez, Diana F.,Garcia-Gutierrez, Domingo I.,Gonzalez-Juarez, Edgar,Roa, Arian Espinosa,Sanchez, Eduardo,Valadez-Villalobos, Karen
, p. 31575 - 31585 (2020)
A simple synthesis of an ionic liquid is carried out using a trialkylphosphine and an alkyl halide. The results showed that the quality of perovskite crystals is enhanced by the incorporation of B4PI, when the percentage is 1.5% the PCE of champion PSCs MA98.5(B4PI)1.5PbI3 increases significantly from 15.5%, with a VOC of 0.957 mV, JSC of 23.6 mA cm-2, and an FF of 68.4%. Stability tests show that excess B4PI by 20% has a protective effect against humidity, MA80(B4PI)20PbI3 was more stable towards humidity, losing only 20% efficiency for 200 h.
Pt-catalysed intermolecular hydroamination of non-activated olefins using a novel family of catalysts: Arbuzov-type phosphorus metal complexes
Rodriguez-Zubiri, Mireia,Anguille, Stéphane,Brunet, Jean-Jacques,Daran, Jean-Claude
, p. 103 - 111 (2013/09/24)
The catalytic system "PtBr2(0.3 mol%)/2P(OR) 3/10nBu4PBr" (R = alkyl) discovered recently in our group, allows good to excellent catalytic activities for the intermolecular hydroamination of ethylene and higher α-olefins (1-hexene) with aniline type amines to give the expected N-ethyl- (1) and N,N-diethyl-anilines (2) along with 2-methyl-quinoline (3). A poisoning effect of alkyl and aromatic phosphines has been observed. This effect could be minimised using small amounts of molecular iodide which reacts with phosphorus ligands to form non-coordinating well-described ionic species. Interestingly, beneficial effects of added P(OR)3 (R = alkyl) have been pointed out and further investigated. In this way, a new potential family of Arbuzov-type phosphorus-metal complexes has been suggested to be responsible for good catalytic activities found when using P(OR)3 alkyl phosphites rather than PR3 (R = alkyl, aromatic) and P(OPh)3 co-catalysts.
Promoted Ruthenium Catalyzed Conversion of Syngas to Alcohols
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Paragraph 0052, (2013/09/12)
This invention concerns a promoted catalyst system for making one or more alkanols from synthesis gas. The catalyst system contains a ruthenium compound and a halogen promoter dispersed in a low-melting tetraorganophosphonium salt. The halogen promoter is a compound capable of generating HX (where X═Cl, Br, or I) under reaction conditions. The invention also concerns a process for selectively preparing one or more alkanols from synthesis gas using the promoted catalyst system.
Intermolecular rhodium-catalysed hydroamination of non-activated olefins: Effect of olefin, amine, phosphine and phosphonium salt
Rodriguez-Zubiri, Mireia,Baudequin, Christine,Bethegnies, Aurelien,Brunet, Jean-Jacques
, p. 445 - 454 (2014/01/17)
The catalytic system RhCl3·3H2O/2P(p-CH3C6H4)3/65nBu4PI/2I2, which was discovered recently in our research group, allows the highest catalytic activity ever reported for the intermolecular hydroamination of ethylene, 1-butene, and 1-hexene with aniline-type amines (0.3 mol% catalytic precursor) to give the expected N-alkyl- (N-ethyl-, 1) and N,N-dialkyl-anilines (N,N-diethyl-, 2) along with 2-methyl quinolines (3; in the case of ethylene). The effects of time and temperature, as well as the nature of the phosphonium salt, phosphine, and amine on the catalytic activity of this reaction have been studied. This system is particularly efficient for the hydroamination of ethylene with aniline in the presence of 2,2′-bis(diphenylphosphino)- 1,1′-binaphthyl (CE=460) and tri(p-tolyl)phosphine (CE= 520). Good to excellent activities were also found by combining Wilkinson′s catalysts (RhI complexes) with nBu4PI and I2. The simple association of PPh3 and I2 has been shown to be a very efficient "in-situ generated" source of I- promoters. CE (catalytic efficiency)=TON1+2TON2+2TON3.
