Chem. Commun.

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A local proton source in a [Mn(bpy-R)(CO)3Br]-type redox catalyst enables CO2 reduction even in the absence of Bronsted acids

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14670-14673
DOI: 10.1039/C4CC05563B, CommunicationFederico Franco, Claudio Cometto, Federico Ferrero Vallana, Fabrizio Sordello, Emanuele Priola, Claudio Minero, Carlo Nervi, Roberto Gobetto
A novel bromotricarbonyl Mn(I) complex with a local proton source shows strong redox catalytic properties in acetonitrile homogeneous solution even in the absence of Bronsted acids.
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Remarkable increase in luminol electrochemiluminescence by sequential electroreduction and electrooxidation

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14662-14665
DOI: 10.1039/C4CC06633B, CommunicationXiaoyun Liu, Wenjing Qi, Wenyue Gao, Zhongyuan Liu, Wei Zhang, Ying Gao, Guobao Xu
Luminol electrochemiluminescence is dramatically increased by about five hundred times by coupling electrochemical reduction and electrochemical oxidation using simple linear sweep voltammetry, enabling sensitive detection.
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pH responsive polymersome Pickering emulsion for simple and efficient Janus polymersome fabrication

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14550-14553
DOI: 10.1039/C4CC07048H, CommunicationZhipeng Wang, Floris P. J. T. Rutjes, Jan C. M. van Hest
A versatile and easy to use method is reported for the preparation of Janus polymersomes via a Pickering emulsion strategy.
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Transformation from non- to double-interpenetration in robust Cd(II) doubly-pillared-layered metal-organic frameworks

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14543-14546
DOI: 10.1039/C4CC07112C, CommunicationHimanshu Aggarwal, Prem Lama, Leonard J. Barbour
Two known Cd(II) non-interpenetrated doubly-pillared metal organic frameworks are shown to undergo change of degree of interpenetration upon loss of lattice solvent molecules, thus resulting in doubly-interpenetrated frameworks.
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Adjusting the inter-particle spacing of a nanoparticle array at the sub-nanometre scale by thermal annealing

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14547-14549
DOI: 10.1039/C4CC06912A, CommunicationJ. Zhou, H. Liu, T. Wang, Y. Li, J. Zhang, Z. Lu, Y. Fu, F. Li
A successful attempt to fabricate nanoparticle arrays with sub-nanometre spacing by thermal annealing of the prepared nanoparticle self-assembly was made.
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Direct evidence for catalase activity of [RuV(edta)(O)]-

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14562-14565
DOI: 10.1039/C4CC06631F, CommunicationDebabrata Chatterjee, Namita Jaiswal, Alicja Franke, Rudi van Eldik
Reported is the first example of a ruthenium complex, RuIII(edta) (edta4- = ethylenediaminetetraacetate), which mimics catalase activity by forming compound I type species, [RuV(edta)(O)]- which reacts with another molecule of H2O2 to produce O2 in the reaction system.
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Oxidative tandem nitrosation/cyclization of N-aryl enamines with nitromethane toward 3-(trifluoromethyl)quinoxalines

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14554-14557
DOI: 10.1039/C4CC07083F, CommunicationZhi-Jun Yang, Chuan-Zhuo Liu, Bo-Lun Hu, Chen-Liang Deng, Xing-Guo Zhang
3-Trifluoromethylquinoxalines were prepared in good yields by tandem nitrosation/cyclization of N-aryl enamines and nitromethane with excellent functional group tolerance.
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Amine-accelerated manganese-catalyzed aromatic C-H conjugate addition to [small alpha],[small beta]-unsaturated carbonyls

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14558-14561
DOI: 10.1039/C4CC07598F, CommunicationBingwei Zhou, Pengchen Ma, Hui Chen, Congyang Wang
Herein we describe the first manganese-catalyzed direct aromatic C-H conjugate addition to [small alpha],[small beta]-unsaturated carbonyls, which is accelerated by a catalytic amount of dicyclohexylamine.
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N-Heterocyclic carbene-catalyzed enantioselective synthesis of functionalized cyclopentenes via [small alpha],[small beta]-unsaturated acyl azoliums

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14539-14542
DOI: 10.1039/C4CC07433E, CommunicationSantigopal Mondal, Santhivardhana Reddy Yetra, Atanu Patra, Sunita S. Kunte, Rajesh G. Gonnade, Akkattu T. Biju
Highly enantioselective NHC-organocatalyzed synthesis of functionalized cyclopentenes by the reaction of modified enals with malonic ester derivatives having a [gamma]-benzoyl group is reported.
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Synthesis of hierarchical zeolites using an inexpensive mono-quaternary ammonium surfactant as mesoporogen

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14658-14661
DOI: 10.1039/C4CC06267A, CommunicationXiaochun Zhu, Roderigh Rohling, Georgy Filonenko, Brahim Mezari, Jan P. Hofmann, Shunsuke Asahina, Emiel J. M. Hensen
The use of N-methylpiperidine as the head group in amphiphilic surfactants renders a cheap and effective method to synthesize mesoporous zeolites.
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Chitosan improves stability of carbon nanotube biocathodes for glucose biofuel cells

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14535-14538
DOI: 10.1039/C4CC04862H, CommunicationSarra El Ichi, Abdelkader Zebda, Awatef Laaroussi, Nadege Reverdy-Bruas, Didier Chaussy, Mohamed Naceur Belgacem, Philippe Cinquin, Donald K. Martin
We demonstrate a novel combined chitosan-carbon-nanotube-enzyme biocathode with a fibrous microstructure that improves the performance by creating a protective microenvironment, preventing the loss of the electrocatalytic activity of the enzyme, and providing good oxygen diffusion.
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Direct enantiospecific substitution of primary [small alpha]-aminoalkylferrocenes via Lewis acid-catalyzed C-N bond cleavage

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14531-14534
DOI: 10.1039/C4CC07196D, CommunicationMeng-Guang Zhou, Wen-Zhao Zhang, Shi-Kai Tian
Unprecedented nucleophilic substitution of primary [small alpha]-aminoalkylferrocenes has been developed in an enantiospecific fashion yielding ammonia as the sole byproduct.
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A solvent-free Diels-Alder reaction of graphite into functionalized graphene nanosheets

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14651-14653
DOI: 10.1039/C4CC07173E, CommunicationJeong-Min Seo, Jong-Beom Baek
A solvent-free Diels-Alder reaction between graphite as a diene and a typical dienophile, maleic anhydride or maleimide is developed. The functionalization of graphite with dienophiles is efficient enough for delamination of graphitic layers into graphene nanosheets upon dispersion in a polar solvent.
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Long wavelength optical control of glutamate receptor ion channels using a tetra-ortho-substituted azobenzene derivative

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14613-14615
DOI: 10.1039/C4CC06612J, CommunicationA. Rullo, A. Reiner, A. Reiter, D. Trauner, E. Y. Isacoff, G. A. Woolley
Tetra-ortho-chloro substitution shifts the optical switching of azobenzene modified glutamate receptors into the red.
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Photo-induced charge recombination kinetics in MAPbI3-xClx perovskite-like solar cells using low band-gap polymers as hole conductors

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14566-14569
DOI: 10.1039/C4CC06338D, CommunicationJose Manuel Marin-Beloqui, Javier Perez Hernandez, Emilio Palomares
We measured the charge recombination kinetics using transient photovoltage (TPV) and laser transient absorption spectroscopy (L-TAS) in MAPbI3-xClx perovskite solar cells using low band gap polymers as hole transport materials (HTMs).
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A LiFSI-LiTFSI binary-salt electrolyte to achieve high capacity and cycle stability for a Li-S battery

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14647-14650
DOI: 10.1039/C4CC06666A, CommunicationJ. J. Hu, G. K. Long, S. Liu, G. R. Li, X. P. Gao
A high capacity and stable cycle performance of the sulfur-based composite are realized in the LiFSI-LiTFSI binary-salt electrolyte, accompanied simultaneously by the homogeneous lithium deposition on the anode.
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Cobalt-containing layered or zeolitic silicates as photocatalysts for hydrogen generation

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14643-14646
DOI: 10.1039/C4CC05931J, CommunicationStefan Neatu, Marta Puche, Vicente Fornes, Hermenegildo Garcia
Co grafted or included in a silicate host is active for the overall water splitting.
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Chemically-induced redox switching of a metalloprotein reveals thermodynamic and kinetic heterogeneity, one molecule at a time

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14523-14526
DOI: 10.1039/C4CC06334A, CommunicationNamik Akkilic, Fenna van der Grient, Muhammad Kamran, Nusrat J. M. Sanghamitra
FRET-based detection of individual azurin-Cy5 molecules shows an on (reduction)-off (oxidation) fluorescence switching, reveals the redox parameters.
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An ESR and DFT study of hydration of the 2[prime or minute]-deoxyuridine-5-yl radical: a possible hydroxyl radical intermediate

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14605-14608
DOI: 10.1039/C4CC07089E, CommunicationLidia Chomicz, Alex Petrovici, Ian Archbold, Amitava Adhikary, Anil Kumar, Michael D. Sevilla, Janusz Rak
An ESR and DFT study demonstrates a simple reaction between the uridine-5-yl radical and H2O resulting in the genotoxic hydroxyl radical.
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An organocatalytic domino Michael-alkylation reaction: highly enantioselective construction of spiro-cyclopentanoneoxindoles and tetronic acid scaffolds

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14601-14604
DOI: 10.1039/C4CC05207B, CommunicationJing Zhou, Qi-Lin Wang, Lin Peng, Fang Tian, Xiao-Ying Xu, Li-Xin Wang
An asymmetric domino reaction of methyleneindolinones and [gamma]-halogenated [small beta]-ketoesters is developed to give spiro-cyclopentanoneoxindoles and tetronic acid derivatives with excellent enantioselectivites.
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