Chem. Commun.

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Phenylenevinylene conjugated oligoelectrolytes as fluorescent dyes for mammalian cell imaging

31 October, 2014 - 16:17

Chem. Commun., 2014, 50,14859-14861
DOI: 10.1039/C4CC06478J, CommunicationPaulina Gwozdzinska, Roza Pawlowska, Justyna Milczarek, Logan E. Garner, Alexander W. Thomas, Guillermo C. Bazan, Arkadiusz Chworos
Conjugated phenylenevinylene oligoelectrolytes, which consist of a phenylenevinylene core equipped at each end with hydrophilic pendent groups, are shown to be good candidates for mammalian cell membrane staining.
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The double perovskite oxide Sr2CrMoO6-[small delta] as an efficient electrocatalyst for rechargeable lithium air batteries

31 October, 2014 - 16:17

Chem. Commun., 2014, 50,14855-14858
DOI: 10.1039/C4CC06113F, CommunicationZhong Ma, Xianxia Yuan, Lin Li, Zi-Feng Ma
Rechargeable lithium air batteries based on the double perovskite oxide Sr2CrMoO6-[small delta] (SCM) as the cathode catalyst reveal a good performance.
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Artificial concurrent catalytic processes involving enzymes

29 October, 2014 - 15:54

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC07277D, Feature ArticleValentin Kohler, Nicholas J. Turner
Various aspects of simultaneous enzymatic catalysis are reviewed with an emphasis on the combination of biocatalysts with transition metal catalysts.
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Supramolecular chirality in peptide microcrystals

29 October, 2014 - 15:54

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC05002A, CommunicationDmitry Kurouski, Joseph D. Handen, Rina K. Dukor, Laurence A. Nafie, Igor K. Lednev
VCD reveals supramolecular chirality in microcrystals of two peptide segments from human islet amyloid (IAPP, amylin). Previously such supramolecular chirality has been observed by VCD only for amyloid fibrils.
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Probing structural changes of self assembled i-motif DNA

29 October, 2014 - 15:54

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC06824F, CommunicationIl Joon Lee, Sachin P. Patil, Karim Fhayli, Shahad Alsaiari, Niveen M. Khashab
We report an i-motif structural probing system using fluorescent Thioflavin T (ThT). This probe can discriminate the structural changes of RET and Rb i-motif sequences depending on pH change.
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A supramolecular hyperbranched polymer based on molecular recognition between benzo-21-crown-7 and secondary ammonium salt

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14666-14669
DOI: 10.1039/C4CC07171A, CommunicationHui Li, Xiaodong Fan, Wei Tian, Haitao Zhang, Wanbin Zhang, Zhen Yang
This study provides an effective strategy for preparing a crown ether-based A2-B3-type supramolecular hyperbranched polymer with stimuli-responsive behavior.
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Enantioselective synthesis of arylglycine derivatives by direct C-H oxidative cross-coupling

29 October, 2014 - 15:54

Chem. Commun., 2014, Advance Article
DOI: 10.1039/C4CC07361D, CommunicationXiao-Hong Wei, Gang-Wei Wang, Shang-Dong Yang
A new method for the synthesis of chiral [small alpha]-amino acid derivatives by enantioselective C-H arylation of N-aryl glycine esters with aryl boric acids by direct C-H oxidative cross-coupling has been performed. This work successfully integrates the direct C-H oxidation with asymmetric arylation and exhibits excellent enantioselectivity.
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Panchromatic absorbers for solar light-harvesting

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14512-14515
DOI: 10.1039/C4CC06853J, CommunicationEric J. Alexy, Jonathan M. Yuen, Vanampally Chandrashaker, James R. Diers, Christine Kirmaier, David F. Bocian, Dewey Holten, Jonathan S. Lindsey
Arrays composed of 1-4 perylene-monoimides joined to a free base porphyrin via an ethynyl linker afford panchromatic absorption (from the near-UV through the visible to the near-IR) and long-lived excited singlet states.
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Optimization of proton conductivity in graphene oxide by filling sulfate ions

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14527-14530
DOI: 10.1039/C4CC07273A, CommunicationKazuto Hatakeyama, Mohammad Razaul Karim, Chikako Ogata, Hikaru Tateishi, Takaaki Taniguchi, Michio Koinuma, Shinya Hayami, Yasumichi Matsumoto
We found that the accommodation of sulfate ions in humidified graphene oxide (GO) walled channels results in an optimized proton conductivity, which is higher than the proton conductivity of all other forms of GO.
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Two carboxyethyltin functionalized polyoxometalates for assembly on carbon nanotubes as efficient counter electrode materials in dye-sensitized solar cells

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14678-14681
DOI: 10.1039/C4CC06211F, CommunicationXiao-Jing Sang, Jian-Sheng Li, Lan-Cui Zhang, Zai-Ming Zhu, Wei-Lin Chen, Yang-Guang Li, Zhong-Min Su, En-Bo Wang
Two new POM-carboxyethyltin derivatives increased the electrocatalytic activity of single-walled carbon nanotubes toward triiodide reduction as counter electrodes in DSSCs.
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Two nanocage anionic metal-organic frameworks with rht topology and {[M(H2O)6]6}12+ charge aggregation for rapid and selective adsorption of cationic dyes

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14674-14677
DOI: 10.1039/C4CC07365G, CommunicationZhifeng Zhu, Yue-Ling Bai, Liangliang Zhang, Daofeng Sun, Jianhui Fang, Shourong Zhu
Two new rht-type anionic MOFs revealed a rapid and selective adsorption of cationic dyes and desorption in saturated NaCl aqueous solution.
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Electrochemical controlling and monitoring of halogen bond formation in solution

29 October, 2014 - 15:54

Chem. Commun., 2014, 50,14616-14619
DOI: 10.1039/C4CC04134H, CommunicationSihem Groni, Tanguy Maby-Raud, Claire Fave, Mathieu Branca, Bernd Schollhorn
Cyclic voltammetry has been used for the first time to probe and to activate non-covalent halogen bonding via redox switching in solution.
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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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