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Kurt Schenk

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Publications associées (57)

Unreacted PbI2 as a Double-Edged Sword for Enhancing the Performance of Perovskite Solar Cells

Jacques-Edouard Moser, Joël Teuscher, Kurt Schenk, Ulf Anders Hagfeldt, Marine Eva Fedora Bouduban, Wolfgang Richard Tress, Juan-Pablo Correa-Baena, Tor Jesper Jacobsson, Elham Halvani Anaraki

Lead halide perovskites have over the past few years attracted considerable interest as photo absorbers in PV applications with record efficiencies now reaching 22%. It has recently been found that not only the composition but also the precise stoichiometr ...

American Chemical Society2016

Ionic Liquid Control Crystal Growth to Enhance Planar Perovskite Solar Cells Efficiency

Michael Graetzel, Shaik Mohammed Zakeeruddin, Kurt Schenk, Ulf Anders Hagfeldt, Amita Ummadisingu, Konrad Domanski, Fabrizio Giordano, Jingshan Luo, Juan-Pablo Correa-Baena, Antonio Abate, Jiyoun Seo, Taisuke Matsui, Michael Saliba, Mahboobeh Hadadian

Ionic liquids can retard the perovskite crystallization with the aim to form compact films with larger and more uniformly distributed grain size. The ionic liquid driven crystallization is exploited to prepared a record planar perovskite solar cell with st ...

Wiley-VCH Verlag Berlin2016

Intrachain antiferromagnetic exchange in a 1D branched-chain built of two different copper(II) centres interlinked by end-on azido and phenoxo bridges: electron density map, electrochemical and magnetic properties

Kurt Schenk, Philip Pattison, Krunoslav Prsa, Henrik Moodysson Rønnow, Arash Alahgholipour Omrani, Noore Elahi Shaik

A 1D, end-on azido- and phenoxo-bridged, coordination polymer, Cu-2(mu-NAPPR)(mu(1,1)-N-3)(2) (1), (NAPPR(2-) = 1,3-bis(naphthylideneimino) propane dianion), was synthesized and characterized. The 1D branched-chain is built of two types of slightly di ...

2015

Synthesis, structural determination, theoretical studies and catalytic activity of Mn(II) complex of N-isonicotinyl phosphoric triamide ligand

Kurt Schenk, Farzaneh Fadaei Tirani

synthesized and characterized by H-1, C-13, P-31 NMR and IR spectroscopies. The reaction of MnCl2 center dot 4H(2)O with L led to the formation of a new 3D system {MnL2Cl2}(n)center dot 34CH(3)OH (C-1). X-ray crystallographic data revealed that the ligand ...

Elsevier Science Sa2015

Supramolecular assemblies of organotin(IV)-diphosphoryl adducts: insights from X-rays and DFT

Kurt Schenk

Mono-, di- and tri-phenyltin(IV) adducts containing a neutral diphosphoryl ligand, Ph2P(O)OC6H4OP(O) Ph-2, were synthesized and characterized. These 2 : 1 adducts of two trans-organotin(IV) moieties and the bridging ligand all crystallize around a centre o ...

Royal Soc Chemistry2015

Syntheses, characterizations, X-ray crystal structures, and antibacterial activities of Co( II), Ni( II), and Zn( II) complexes of the Schiff base derived from 5-nitro-2hydroxybenzaldehyde and benzylamine

Kurt Schenk

Three new complexes, [(CoL2)-L-II(bzln)(2)] (1), [(NiL2)-L-II(DMF)(2)] (2), and [(ZnL2)-L-II] (3), with the bidentate (NO) Schiff base HL=2-((E)-(benzylimino)methyl)-4-nitrophenol have been synthesized and characterized. [(CoL2)-L-II(bzln)(2)] (1) was init ...

Taylor & Francis Ltd2015

Triphenyltin(IV) adducts of diphosphoryl ligands: structural, electronic and energy aspects from X-ray crystallography and theoretical calculations

Kurt Schenk, Farzaneh Fadaei Tirani

Some triphenyltin(IV) adducts with a family of diphosphoryl ligands, RR'P(O)-X-P(O)RR' (R = OPh, Ph, R' = R, An (aniline)) and X = 1,4-OC6H4O, 1,4-OC6H4NH, 1,4-NHC6H4NH 1,4-(NHCH2)(2)C6H4, 1,3-(NHCH2)(2)C6H4 and piperazine have been synthesized and charact ...

Royal Soc Chemistry2015

A simple spiro-type hole transporting material for efficient perovskite solar cells

Michael Graetzel, Mohammad Khaja Nazeeruddin, Rosario Scopelliti, Kurt Schenk, Ines Raabe, Peng Gao, Paramaguru Ganesan, Jingshan Luo, Kunwu Fu

We developed a cost-effective spiro-type 4,4 ',4 '',4 '''-(2H,2 ' H,4H,4 ' H-3,3 '-spiro-bi[thieno[3,4-b][1,4] dioxepine]-6,6 ',8,8 '-tetrayl) tetrakis(N,N-bis(4-methoxyphenyl)aniline) hole transporting material (PST1) for perovskite solar cells (PSCs) th ...

Royal Society of Chemistry2015

New Zn(II) complexes with N2S2 Schiff base ligands. Experimental and theoretical studies of the role of Zn(II) in disulfide thiolate-exchange

Kurt Schenk, Maryam Bagheri

Described are the synthesis and characterization of two, potentially tetradentate, N2S2 Schiff-base ligands, containing a disulfide bond, N,N'-bis(3-phenylprop-2-en-l-ylidene)-2,2'-disulfanediyldianiline (L-1) and N,N'-bis(3,3-diphenylprop-2-en-1-ylidene)- ...

Elsevier2014

Synthesis, crystal structure, and electrochemical properties of Ni(II) and Cu(II) complexes with two unsymmetrical N2O2 Schiff base ligands

Kurt Schenk, Maryam Bagheri

Nickel(II) and copper(II) complexes of two unsymmetrical tetradentate Schiff base ligands [Ni(Me-salabza)] (1), [Cu(Me-salabza)] (2) and [Ni(salabza)] (3), {H(2)salabza = N,N'-bis[(salicylidene)-2-aminobenzylamine] and H2Me-salabza = N,N'-bis[(methylsalicy ...

Springer2014

A four-component organogel based on orthogonal chemical interactions

Kay Severin, Kurt Schenk, Nicolas Luisier

A thermoresponsive organogel was obtained by orthogonal assembly of four compounds using dynamic covalent boronate ester and imine bonds, as well as dative boron-nitrogen bonds. It is shown that the gel state can be disrupted or reinforced by chemicals whi ...

Royal Society of Chemistry2014

Steric and electronic control over the structural diversity of N-(n-pyridinyl) diphenylphosphinic amides (n = 2 and 4) as difunctional ligands in triphenyltin(IV) adducts

Kurt Schenk, Farzaneh Fadaei Tirani

Two triphenyltin(IV) adducts of difunctional ligands, N-(n-pyridinyl) diphenylphosphinic amide (n = 2 and 4), have been synthesized and characterized by H-1, P-31, Sn-119 NMR and IR spectroscopy. The spectroscopic properties of the complexes were compared ...

Royal Soc Chemistry2014

Base-Catalyzed Intramolecular Hydroamination of Cyclohexa-2,5-dienes: Insights into the Mechanism through DFT Calculations and Application to the Total Synthesis of epi-Elwesine

Kurt Schenk

The base-catalyzed intramolecular hydroamination of 1-ethylaminocyclohexa-2,5-dienes is described. The transformation proceeds through isomerization of the cyclohexa-1,4-dienyl fragment into the corresponding conjugated 1,3-diene prior to the hydroaminatio ...

Wiley-V C H Verlag Gmbh2014

Synthesis of Homogeneous Manganese-Doped Titanium Oxide Nanotubes from Titanate Precursors

László Forró, Kurt Schenk, Arnaud Magrez, Bálint Náfrádi, Zlatko Mickovic, Rita Smajda, Endre Horvath, Péter Szirmai

We report a novel synthesis route of homogeneously manganese-doped TiO2 nanotubes in a broad concentration range. The scroll-type trititanate (H2Ti3O7) nanotubes prepared by hydrothermal synthesis were used as precursors. Mn2+ ions were introduced by an io ...

Amer Chemical Soc2013

Synthesis, structural characterization, and antibacterial activity of mononuclear cobalt(III) azido complexes of two pentadentate Schiff bases derived from 2-hydroxynaphthaldehyde

Kurt Schenk, Farzaneh Fadaei Tirani

The structural, spectroscopic, and electrochemical properties of [Co{(naph)(2)dien}(N-3)] and [Co{(naph)(2)dpt}(N-3)], where (naph)(2)dien=bis-(2-hydroxy-1-naphthaldimine)-N-diethylenetriaminedianion and (naph)(2)dpt=bis-(2-hydroxy-1-naphthaldimine)-N-dipr ...

Taylor & Francis Ltd2013

Synthesis, characterization and X-ray crystal structures of two polymorphs of a cobalt(III) complex with a N3O2 pentadentate Schiff base ligand, and benzylamine: spectral and electrochemical studies

Kurt Schenk, Farzaneh Fadaei Tirani

The title complex [Co-III{(naph)(2)dpt}(bzlan)]BPh4, where (naph)(2)dpt stands for bis-(2-hydroxy-1-naphthaldimine)-N-dipropylenetriamine dianion and bzlan for benzylamine, has been synthesized and characterized by elemental analyses, IR, UV-Vis and H-1 NM ...

Springer2013

Low-cost industrially available molybdenum boride and carbide as “platinum-like” catalysts for the hydrogen evolution reaction in biphasic liquid systems

Hubert Girault, Kurt Schenk, Xile Hu, Véronique Amstutz, Heron Vrubel, Micheal Diarmaid Scanlon

Rarely reported low-cost molybdenum boride and carbide microparticles, both of which are available in abundant quantities due to their widespread use in industry, adsorb at aqueous acid–1,2-dichloroethane interfaces and efficiently catalyse the hydrogen ev ...

Royal Soc Chemistry2013

The 2SO Skew-Boat Conformation in L-Iduronic Acid

Kurt Schenk

Crystal clear: After two decades of controversy the elusive skew-boat conformation of L-iduronic acid (see picture) was finally ascertained at atomic resolution in a synthetic, substituted disaccharide. This highly flexible compound crystallizes in two dim ...

Wiley-VCH Verlag GmbH2011

Dative boron–nitrogen bonds in structural supramolecular chemistry: multicomponent assembly of prismatic organic cages

Kay Severin, Rosario Scopelliti, Kurt Schenk, Burçak Içli, Erin Sheepwash

The multicomponent reaction of diboronic acids with a catechol and a tripyridyl linker results in the formation trigonal prismatic cages. The cages feature six dative boron–nitrogen bonds as structure-directing elements. The size of the cages can be varied ...

2011

Preparation of 5-Membered Rings via Radical Addition-Translocation-Cyclization (RATC) Processes Mediated by Diethyl Thiophosphites

Philippe Renaud, Kurt Schenk

A practical method for the formation of thiophosphonates bearing functionalized monocyclic, fused bicyclic and spirocyclic residues is presented. The procedure requires the easily available terminal alkynes as starting materials as well as commercially and ...

Wiley2011

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