Electrostatic grafting of a triphenylphosphine sulfonate on SBA-15: application in palladium catalyzed hydrogenation

Wang, Lei; Dehe, Daniel; Philippi, Thomas; Seifert, Andreas; Zhou, Zhou; Hartmann, Martin; Taylor, Robin N. Klupp; Singh, Anand; Jia, Mingjun; Thiel, Werner R.

doi:10.1039/c2cy00535b

Cited by 11 publications

(1 citation statement)

References 64 publications

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“…Undoubtedly, immobilized systems are very attractive for the catalysis (reduction‐hydrogenation, oxidation, C‐C bond formation reactions etc.). Similar expressions can be said for materials or complexes containing palladium metal and the location of the palladium compounds is to particular importance in the catalyst chemistry . Likewise, the materials or complexes bearing palladium have been used for various purposes in photovoltaic studies …”

Section: Introductionmentioning

confidence: 90%

Enhanced Performance of Organic/Inorganic Hybrid Nanomaterials bearing Impregnated [PdL₂] Complexes as Counter‐Electrode Catalyst for Dye‐Sensitized Solar Cells

Dayan

Özdemir

Özpozan

2018

Applied Organom Chemis

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N‐coordinate Pd2+ complexes [PdL2] (L: N‐N‐quinoline‐8‐yl‐R‐benzenesulfonamides) (6–10) and [PdL2] complexes assembled on multi‐wall carbon nanotubes (MWCNTs) hybrid nanomaterials were fabricated and characterized by various techniques. The [PdL2] impregnated MWCNTs materials (11–15) were applied as a counter electrode (CE) catalyst for triiodide to iodide reduction reaction in the dye‐sensitized solar cells (DSSC) and investigated electro‐catalytic activities. The MWCNTs‐supported [PdL2] CEs (11–15) are exhibits as Pt‐free CE with good power conversion efficiencies (PCEs), and compared to platinum and bare MWCNTs CEs and the PCE of bare MWCNTs was clearly improved by means of [PdL2] complexes (6–10). The DSSCs based on the hybrid counter electrodes (CEs) (11–15) and bare MWCNTs are indicated a relative efficiency (ƞrel) of 64.27%, 54.07%, 53.75%, 51.52% 44.82% and 27.27% concerning a Pt CE control device set at 100%. The report emphasizes that [PdL2] impregnated MWCNTs type counter electrodes (CEs) (11–15) are promising as effectively catalyst in working device design, particularly taking into account the eco‐friendly approach of the hybrids.

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Section: Introductionmentioning

confidence: 90%

Enhanced Performance of Organic/Inorganic Hybrid Nanomaterials bearing Impregnated [PdL₂] Complexes as Counter‐Electrode Catalyst for Dye‐Sensitized Solar Cells

Dayan

Özdemir

Özpozan

2018

Applied Organom Chemis

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Electrostatic Grafting of a Palladium N‐Heterocyclic Carbene Catalyst on a Periodic Mesoporous Organosilica and its Application in the Suzuki–Miyaura Reaction

et al. 2015

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A periodic mesoporous organosilica material functionalized with a Pd N‐heterocyclic carbene complex was synthesized by applying an electrostatic grafting method. The resulting hybrid material was characterized by solid‐state 29Si and 13C cross‐polarization magic‐angle spinning NMR spectroscopy, XRD, thermogravimetric analysis, and BET measurements. The hybrid was applied as a catalyst for the Suzuki–Miyaura cross‐coupling between aryl chlorides and phenylboronic acid under heterogeneous and aerobic conditions. The supported catalyst exhibited excellent activity and stability and it could be reused at least six times without any loss of activity. Atomic absorption spectroscopy detected no Pd contamination in the products, and leaching tests verified that the reaction was truly heterogeneous.

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Chemisorption of Exchange‐Coupled [Ni₂L(dppba)]⁺ Complexes on Gold by Using Ambidentate 4‐(Diphenylphosphino)benzoate Co‐Ligands

Golecki¹,

Lach²,

Jeremies³

et al. 2013

Chemistry A European J

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A new strategy for the fixation of redox-active dinickel(II) complexes with high-spin ground states to gold surfaces was developed. The dinickel(II) complex [Ni2L(Cl)]ClO4 (1ClO4), in which L(2-) represents a 24-membered macrocyclic hexaaza-dithiophenolate ligand, reacts with ambidentate 4-(diphenylphosphino)benzoate (dppba) to form the carboxylato-bridged complex [Ni2L(dppba)](+), which can be isolated as an air-stable perchlorate [Ni2L(dppba)]ClO4 (2ClO4) or tetraphenylborate [Ni2L(dppba)]BPh4 (2BPh4) salt. The auration of 2ClO4 was probed on a molecular level, by reaction with AuCl, which leads to the monoaurated Ni(II)2Au(I) complex [Ni(II)2L(dppba)Au(I)Cl]ClO4 (3ClO4). Metathesis of 3ClO4 with NaBPh4 produces [Ni(II)2L(dppba)Au(I)Ph]BPh4 (4BPh4), in which the Cl(-) is replaced by a Ph(-) group. The complexes were fully characterized by ESI mass spectrometry, IR and UV/Vis spectroscopy, X-ray crystallography (2BPh4 and 4BPh4), cyclic voltammetry, SQUID magnetometry and HF-ESR spectroscopy. Temperature-dependent magnetic susceptibility measurements reveal a ferromagnetic coupling J = +15.9 and +17.9 cm(-1) between the two Ni(II) ions in 2ClO4 and 4BPh4 (H = -2 JS1S2). HF-ESR measurements yield a negative axial magnetic anisotropy (D<0), which implies a bistable (easy axis) magnetic ground state. The binding of the [Ni2L(dppba)]ClO4 complex to gold was ascertained by four complementary surface analytical methods: contact angle measurements, atomic-force microscopy, X-ray photoelectron spectroscopy, and spectroscopic ellipsometry. The results indicate that the complexes are attached to the Au surface through coordinative Au-P bonds in a monolayer.

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Electrostatic grafting of a triphenylphosphine sulfonate on SBA-15: application in palladium catalyzed hydrogenation

Cited by 11 publications

References 64 publications

Enhanced Performance of Organic/Inorganic Hybrid Nanomaterials bearing Impregnated [PdL₂] Complexes as Counter‐Electrode Catalyst for Dye‐Sensitized Solar Cells

Enhanced Performance of Organic/Inorganic Hybrid Nanomaterials bearing Impregnated [PdL₂] Complexes as Counter‐Electrode Catalyst for Dye‐Sensitized Solar Cells

Electrostatic Grafting of a Palladium N‐Heterocyclic Carbene Catalyst on a Periodic Mesoporous Organosilica and its Application in the Suzuki–Miyaura Reaction

Chemisorption of Exchange‐Coupled [Ni₂L(dppba)]⁺ Complexes on Gold by Using Ambidentate 4‐(Diphenylphosphino)benzoate Co‐Ligands

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Electrostatic grafting of a triphenylphosphine sulfonate on SBA-15: application in palladium catalyzed hydrogenation

Cited by 11 publications

References 64 publications

Enhanced Performance of Organic/Inorganic Hybrid Nanomaterials bearing Impregnated [PdL2] Complexes as Counter‐Electrode Catalyst for Dye‐Sensitized Solar Cells

Enhanced Performance of Organic/Inorganic Hybrid Nanomaterials bearing Impregnated [PdL2] Complexes as Counter‐Electrode Catalyst for Dye‐Sensitized Solar Cells

Electrostatic Grafting of a Palladium N‐Heterocyclic Carbene Catalyst on a Periodic Mesoporous Organosilica and its Application in the Suzuki–Miyaura Reaction

Chemisorption of Exchange‐Coupled [Ni2L(dppba)]+ Complexes on Gold by Using Ambidentate 4‐(Diphenylphosphino)benzoate Co‐Ligands

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Enhanced Performance of Organic/Inorganic Hybrid Nanomaterials bearing Impregnated [PdL₂] Complexes as Counter‐Electrode Catalyst for Dye‐Sensitized Solar Cells

Enhanced Performance of Organic/Inorganic Hybrid Nanomaterials bearing Impregnated [PdL₂] Complexes as Counter‐Electrode Catalyst for Dye‐Sensitized Solar Cells

Chemisorption of Exchange‐Coupled [Ni₂L(dppba)]⁺ Complexes on Gold by Using Ambidentate 4‐(Diphenylphosphino)benzoate Co‐Ligands