Chemistry - A European Journal

Cover image for Vol. 20 Issue 30

Editor: Neville Compton, Deputy Editors: Anne Deveson, Elisabeth Roedern

Impact Factor: 5.831

ISI Journal Citation Reports © Ranking: 2012: 21/152 (Chemistry Multidisciplinary)

Online ISSN: 1521-3765

Associated Title(s): Angewandte Chemie International Edition, Chemistry – An Asian Journal, ChemistryOpen, ChemBioChem, ChemCatChem, ChemElectroChem, ChemMedChem, ChemPhysChem, ChemPlusChem, ChemSusChem, European Journal of Inorganic Chemistry, European Journal of Organic Chemistry

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May 23, 2014

New Multichromophoric Ligand for Light Harvesting

New Multichromophoric Ligand for Light Harvesting

Light-harvesting antennae are of great importance for the development of efficient solar cells. Multichromophoric systems capable of harvesting light are of interest as they can be used in multicomponent systems in which the different chromophores are in close contact to favor energy and/or electron transfer, so that the excitation energy can be funneled to a specific acceptor. If one of these chromophores is also a good ligand for metal ions, new interesting properties can arise in a supramolecular system, such as control of the energy/electron transfer processes by changing the metal ion or the ability to generate supramolecular architectures and coordination polymers. To find out more about this subject read the paper by Marc Gingras, Aix-Marseille Université, France, Giacomo Bergamini, University of Bologna, Italy, and co-workers

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Recently Published Articles

  1. Catalytic Enantioselective Amide Allylation of Isatins and Its Application in the Synthesis of 2-Oxindole Derivatives Spiro-Fused to the α-Methylene-γ-Butyrolactone Functionality

    Dr. Masaki Takahashi, Yusuke Murata, Dr. Fumitoshi Yagishita, Prof. Dr. Masami Sakamoto, Dr. Tetsuya Sengoku and Prof. Dr. Hidemi Yoda

    Article first published online: 22 JUL 2014 | DOI: 10.1002/chem.201403357

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    One thing leads to another: Amide allylation of various isatin substrates with NH-containing stannylated reagents resulted in extremely high yields and enantioselectivities of variously substituted homoallylic alcohols, thereby allowing convenient access to chiral 2-oxindoles spiro-fused to the α-methylene-γ-butyrolactone functionality and their halogenated derivatives in almost enantiopure forms (see scheme).

  2. Novel Method for the Fabrication of a Charge-Transfer Complex Crystal by Photoirradiation

    Prof. Masaki Matsuda, Miki Nishi, Shoko Koga, Mika Fujishima, Dr. Norihisa Hoshino, Prof. Tomoyuki Akutagawa and Dr. Hiroyuki Hasegawa

    Article first published online: 22 JUL 2014 | DOI: 10.1002/chem.201402644

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    Crystal growth: Photoirradiation of a solution of TPP[Co(tbp)(CN)2] and TPP[Co(Pc)(CN)2] (tbp=tetrabenzoporphyrin, Pc=phthalocyanine, TPP=tetraphenylphosphonium) gave a molecular conducting crystal of a charge-transfer complex TPP[Co(tbp)(CN)2]2, which was produced by the process in which the photoexcited electron in tbp was transferred from the LUMO of tbp to that of Pc (see figure).

  3. Self-Assembly of Fullerene-Based Janus Particles in Solution: Effects of Molecular Architecture and Solvent

    Zhiwei Lin, Pengtao Lu, Chih-Hao Hsu, Dr. Kan Yue, Dr. Xue-Hui Dong, Hao Liu, Kai Guo, Prof. Chrys Wesdemiotis, Dr. Wen-Bin Zhang, Dr. Xinfei Yu and Prof. Stephen Z. D. Cheng

    Article first published online: 22 JUL 2014 | DOI: 10.1002/chem.201402697

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    Symmetry breaking: Two fullerene-based molecular Janus particles (AC60–C60 and AC60–2C60) exhibit intriguing self-assembly in solution. Interdigitated and bilayered vesicles are formed in THF from AC60–C60 and AC60–2C60, respectively, while spheres and cylinders are observed in N,N-dimethylformamide (DMF)/water (see figure).

  4. Regioselective Conversion of Arenes to N-aryl-1,2,3-triazoles Using C[BOND]H Borylation

    Dr. Rajavel Srinivasan, Dr. Anthony G. Coyne and Prof. Dr. Chris Abell

    Article first published online: 22 JUL 2014 | DOI: 10.1002/chem.201403021

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    C[BOND]H “Clicked”: A one-pot protocol for the synthesis of N-aryl 1,2,3-triazoles from arenes by an iridium-catalyzed C[BOND]H borylation/copper-catalyzed azidation/click sequence is described. Cu(OTf)2 (1 mol %) was found to efficiently catalyze both the azidation and the click reaction. The applicability of this method is demonstrated by the late-stage chemoselective installation of 1,2,3-triazole moiety into unactivated complex molecules of pharmaceutical importance (see scheme, cod=1,5-cyclooctadiene, Pin=pinacolato).

  5. Organocatalytic Cascade Reactions: Towards the Diversification of Hydroisochromenes and Chromenes through Two Different Activation Modes

    Dr. David Cruz Cruz, Rasmus Mose, Dr. Clarisa Villegas Gómez, Stine V. Torbensen, Martin S. Larsen and Prof. Dr. Karl Anker Jørgensen

    Article first published online: 22 JUL 2014 | DOI: 10.1002/chem.201403505

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    High five! The organocatalytic enantioselective syntheses of functionalized hydroisochromenes and chromenes by trienamine-mediated [4+2]-cycloaddition/nucleophilic ring-closing and iminium-ion/aminal-mediated oxa-Michael/Michael/nucleophilic ring-closing with 2-nitroallylic alcohols are presented. The corresponding cycloadducts, with up to five stereocenters, are formed in good yield and excellent enantioselectivities.

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