945629-66-3Relevant articles and documents
PCET-Based Ligand Limits Charge Recombination with an Ir(III) Photoredox Catalyst
Heredia, Daniel A.,Knowles, Robert R.,Moore, Ana L.,Moore, Thomas A.,Odella, Emmanuel,Ripberger, Hunter H.,Rumbles, Garry,Sayre, Hannah,Scholes, Gregory D.,Zieleniewska, Anna
, p. 13034 - 13043 (2021)
Upon photoinitiated electron transfer, charge recombination limits the quantum yield of photoredox reactions for which the rates for the forward reaction and back electron transfer are competitive. Taking inspiration from a proton-coupled electron transfe
COLORANT COMPOSITION, PHOTOSENSITIVE RESIN COMPOSITION, PHOTO RESIST, COLOR FILTER, AND DISPLAY DEVICE
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Paragraph 0209-0212, (2020/10/09)
The present invention relates to a color material composition comprising a polymer including a unit represented by chemical formula 1, to a photosensitive resin composition comprising the same, to a photosensitive material, to a color filter, and to a dis
COLORANT COMPOSITION, PHOTOSENSITIVE RESIN COMPOSITION, PHOTO RESIST, COLOR FILTER, AND DISPLAY DEVICE
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Paragraph 0255-0258, (2020/08/14)
The color material composition of claim 1, wherein the compound is represented by the following formula. A photosensitive material, a color filter and a display device are provided. (by machine translation)
Four-component zinc-porphyrin/zinc-salphen nanorotor
?zer, Merve S.,Rana, Anup,Biswas, Pronay K.,Schmittel, Michael
, p. 9491 - 9497 (2017/08/03)
An off-axis supramolecular rotor was composed of four components: a zinc-porphyrin based stator with four phenanthroline stations and a zinc-salphen based rotator were self-assembled with DABCO and four copper(i) ions to furnish the rotor ROT-2 in quantitative yield. The DABCO serves as a connecting axle between the rotator and the stator, while the rotator is additionally connected to two copper(i)-loaded phenanthroline stations of the stator via its two pyridine terminals (Npy → [Cu(phen)]+). For the thermally activated rotation both Npy → [Cu(phen)]+ interactions have to be cleaved. Due to the high energy barrier of the rotation the slow motion was monitored by ROESY. The reduced speed (k298 = 0.2 s-1) was rationalised in terms of ground state stabilisation of the rotor as suggested by computational insight. Additional VT 1H-NMR investigation was undertaken to study the motion of DABCO that is sandwiched between zinc porphyrin and zinc salphen. The diagnostic splitting of the geminal DABCO protons was rationalised on the basis of the asymmetry induced by the salphen that generates a diastereotopic environment. Computations reproduced the experimental NMR with excellent agreement.
Synthesis and characterization of original calix-salen type ligands
Ibrahim, Farah,Nasrallah, Houssein,Hong, Xiang,Mellah, Mohamed,Schulz, Emmanuelle,Hachem, Ali,Ibrahim, Ghassan,Jaber, Nada
, p. 9954 - 9961,8 (2012/12/12)
Polycondensation reactions between various modified disalicylaldehyde derivatives and two chiral diamines afforded in each case macrocyclic structures, named calix-salen. Mixtures of oligomers (dimers to pentamers) were qualitatively analyzed by Maldi-Tof
New chiral calixsalen chromium complexes: Recyclable asymmetric catalysts
Zulauf, Anais,Mellah, Mohamed,Schulz, Emmanuelle
experimental part, p. 11108 - 11114 (2010/11/16)
A chiral N,N'-bis(salicylidene)ethylenediamine (salen) polymer has been prepared by a condensation reaction between a thio-phenedisalicyladehyde derivative and (S,S)-cyclohexane-1,2-diamine. This polymeric compound was demonstrated to possess a cyclic structure with two to five repetitive units. The addition of chromium(II) salts led to the generation of a chiral catalyst that could be recovered as an insoluble powder. The performance of this new calixsalen-type catalyst was examined in various transformations, particularly in its ability to promote nucleophilic epoxide ring opening under heterogeneous conditions. The target products were obtained in high yields and with improved selectivity compared with those obtained by using analogous linear polymers. The arrangement of the catalytic sites in the cyclic structure is probably more suitable for the necessary cooperative bimetallic pathway of this demanding reaction. The catalyst could be successfully recycled. This approach represents the first use of calixsalen complexes under heterogeneous catalytic conditions.
Catalase and epoxidation activity of manganese salen complexes bearing two xanthene scaffolds
Yang, Jenny Y.,Nocera, Daniel G.
, p. 8192 - 8198 (2008/02/11)
A series of manganese Hangman salen ligand platforms functionalized by tert-butyl groups in the 3 and 3′ positions using the Suzuki cross-coupling methodology are presented. The Hangman platforms support multielectron chemistry mediated by proton-coupled
