Chem. Commun.

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Enzymatic preparation of a redox-responsive hydrogel for encapsulating and releasing living cells

8 May, 2014 - 21:17

Chem. Commun., 2014, 50,5895-5898
DOI: 10.1039/C3CC49766F, CommunicationKousuke Moriyama, Kosuke Minamihata, Rie Wakabayashi, Masahiro Goto, Noriho Kamiya
Horseradish peroxidase-mediated oxidative cross-linking of a thiolated poly(ethylene glycol) allows the preparation of a hydrogel that can encapsulate and release living mammalian cells.
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Five-coordinate MII-semiquinonate (M = Fe, Mn, Co) complexes: reactivity models of the catechol dioxygenases

8 May, 2014 - 21:17

Chem. Commun., 2014, 50,5871-5873
DOI: 10.1039/C3CC49143A, CommunicationPeng Wang, Glenn P. A. Yap, Charles G. Riordan
The first mononuclear iron(II)-semiquinonate has been prepared. Analogous manganese and cobalt adducts are reported, including a cobalt(II)-semiquinonate that exhibits O2-mediated intradiol oxidation.
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Catalytic liquid marbles: Ag nanowire-based miniature reactors for highly efficient degradation of methylene blue

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5923-5926
DOI: 10.1039/C4CC01949K, CommunicationYue-E Miao, Hiang Kwee Lee, Wee Shern Chew, In Yee Phang, Tianxi Liu, Xing Yi Ling
Ag nanowire-based catalytic liquid marbles are fabricated as miniature reactors, which demonstrate highly efficient, support-free and rate-controllable heterogeneous degradation of methylene blue, with catalytic efficiency close to 100%.
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Unexpected neutral aza-macrocycle complexes of sodium

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5843-5846
DOI: 10.1039/C4CC01407C, CommunicationMatthew Everett, Andrew Jolleys, William Levason, David Pugh, Gillian Reid
Highly unusual Na+ complexes with neutral tri- and tetra-amines are isolable in good yield from the reaction of NaBArF with the amine in organic media.
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Dehydrogenation of a tertiary amine-borane by a rhenium complex

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5874-5877
DOI: 10.1039/C4CC01771D, CommunicationSohail Muhammad, Salvador Moncho, Edward N. Brothers, Ashfaq A. Bengali
Photolysis of CpRe(CO)3 in the presence of H3BNEt3 results in the dehydrogenation of the borane and formation of trans-CpRe(CO)2(H)2.
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Unfolding the crucial role of a nucleophile in Ziegler-Natta type Ir catalyzed polyaminoborane formation

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5919-5922
DOI: 10.1039/C4CC01337A, CommunicationSourav Bhunya, Tanmay Malakar, Ankan Paul
DFT investigations reveal that a transition metal bound amino-borane unit is responsible for chain initiation and chain growth in polyaminoborane formation catalysed by Brookhart's iridium pincer catalyst. This mechanistic manifold reported here is also implicated in other transition metal catalysed polyaminoborane formation processes.
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New members of layered oxychloride perovskites with square planar coordination: Sr2MO2Cl2 (M = Mn, Ni) and Ba2PdO2Cl2

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5915-5918
DOI: 10.1039/C4CC01422G, CommunicationY. Tsujimoto, C. I. Sathish, Y. Matsushita, K. Yamaura, T. Uchikoshi
We have demonstrated high-pressure syntheses of Ruddlesden-Popper type layered oxychloride perovskites, Sr2MnO2Cl2, Sr2NiO2Cl2 and Ba2PdO2Cl2, with a square planar coordination around the transition metal centres.
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Facile synthesis of yolk-shell structured Si-C nanocomposites as anodes for lithium-ion batteries

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5878-5880
DOI: 10.1039/C4CC01728E, CommunicationLei Pan, Haibin Wang, Dacheng Gao, Shengyang Chen, Lei Tan, Lei Li
A new method to synthesize yolk-shell structured Si-C nanocomposites as anodes for lithium-ion batteries was reported.
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Copper-catalyzed olefinic C-H difluoroacetylation of enamides

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5887-5890
DOI: 10.1039/C4CC01994F, CommunicationGilles Caillot, Jeremy Dufour, Marie-Charlotte Belhomme, Thomas Poisson, Laurence Grimaud, Xavier Pannecoucke, Isabelle Gillaizeau
An efficient copper-catalyzed method for the regioselective synthesis of [small beta]-difluoroester substituted enamides using BrCF2CO2Et is reported for the first time.
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Switching an O2 sensitive glucose oxidase bioelectrode into an almost insensitive one by cofactor redesign

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5912-5914
DOI: 10.1039/C4CC01670J, CommunicationEmilie Tremey, Emmanuel Suraniti, Olivier Courjean, Sebastien Gounel, Claire Stines-Chaumeil, Frederic Louerat, Nicolas Mano
We switched an O2 sensitive glucose oxidase bioelectrode into an almost insensitive one by cofactor redesign.
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All-round robustness of the Mn19 coordination cluster system: experimental validation of a theoretical prediction

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5847-5850
DOI: 10.1039/C4CC01264J, CommunicationAyuk M. Ako, Yanhua Lan, Oliver Hampe, Eduard Cremades, Eliseo Ruiz, Christopher E. Anson, Annie K. Powell
Experimental and theoretical studies confirm that the maximum possible ground spin state of ST = 83/2 for the Mn19 aggregate is insensitive to replacement of its eight [small mu ]3-N3 ligands by [small mu ]3-Cl, [small mu ]3-Br, [small mu ]3-OH or [small mu ]3-OMe.
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A tetranaphthoimidazolium receptor as a fluorescent chemosensor for phytate

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5851-5853
DOI: 10.1039/C4CC02036G, CommunicationMinji Lee, Jong Hun Moon, Eun Jin Jun, Gyoungmi Kim, Yong-Uk Kwon, Jin Yong Lee, Juyoung Yoon
A new tetranaphthoimidazolium receptor showed a selective fluorescence enhancement with phytate, myo-inositol hexakisphosphate (IP6), in 100% aqueous solution at pH 7.4.
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Asymmetric dinuclear bis(dipyrrinato)zinc(II) complexes: broad absorption and unidirectional quantitative exciton transmission

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5881-5883
DOI: 10.1039/C4CC01573H, CommunicationMizuho Tsuchiya, Ryota Sakamoto, Shinpei Kusaka, Yasutaka Kitagawa, Mitsutaka Okumura, Hiroshi Nishihara
Asymmetric, heteroleptic dinuclear bis(dipyrrinato)zinc(II) complexes convey excitons quantitatively and rapidly across their structure from one end to the other.
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Highly active AuCo alloy nanoparticles encapsulated in the pores of metal-organic frameworks for hydrolytic dehydrogenation of ammonia borane

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5899-5901
DOI: 10.1039/C4CC00785A, CommunicationJun Li, Qi-Long Zhu, Qiang Xu
AuCo alloy nanoparticles encapsulated in the pores of MIL-101 via the double solvents method combined with the overwhelming reduction approach exert excellent catalytic activity for hydrolytic dehydrogenation of ammonia borane.
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The detection of thrombin using a mixture of a fluorescent conjugated polyelectrolyte and fibrinogen and implementation of a logic gate

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5833-5836
DOI: 10.1039/C4CC01495B, CommunicationDaigeun Kim, Taek Seung Lee
A highly sensitive and selective detection of thrombin is accomplished using an emission color-tunable conjugated polyelectrolyte. An implementation of a combined logic gate was realized upon emission modulation of the system including the polymer, fibrinogen, thrombin, and heparin.
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Metamagnetic behaviour in a new Cu(II)Re(IV) chain based on the hexachlororhenate(IV) anion

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5840-5842
DOI: 10.1039/C4CC01564A, CommunicationJose Martinez-Lillo, John Kong, Wdeson P. Barros, Juan Faus, Miguel Julve, Euan K. Brechin
A new chloro-bridged heterobimetallic Cu(II)Re(IV) chain of formula {Cu(pyim)(Him)2ReCl6}n[middle dot]MeCN (1[middle dot]MeCN) has been prepared and magnetostructurally studied. This is the first example of the hexachlororhenate(IV) anion acting as a metalloligand towards a paramagnetic metal ion.
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Dynamic kinetic resolution of dehydrocoronamic acid

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5858-5860
DOI: 10.1039/C4CC01125B, CommunicationDavid A. Chaplin, Martin E. Fox, Sebastian H. B. Kroll
A dynamic kinetic resolution is described employing enzymatic reaction of a readily racemised azlactone with an alcohol which can provide either enantiomer of dehydrocoronamic acid.
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Bidentate cycloimidate palladium complexes with aliphatic and aromatic anagostic bonds

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5909-5911
DOI: 10.1039/C4CC01060D, CommunicationStephan Scholer, Maike H. Wahl, Nicole I. C. Wurster, Arik Puls, Christof Hattig, Gerald Dyker
Palladium(II) complexes of bidentate cycloimidate ligand systems with a triarylmethyl moiety exhibit exceptional downfield shifts in proton NMR spectra due to rare anagostic interactions.
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A BODIPY-based reactive probe for the detection of Au(III) species and its application to cell imaging

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5884-5886
DOI: 10.1039/C4CC01958J, CommunicationMuhammed Ucuncu, Mustafa Emrullahoglu
A BODIPY-based chemodosimeter for turn-on detection of gold ions which relies on a novel C[double bond, length as m-dash]N bond hydrolysis mechanism.
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A self-oscillating gel actuator driven by ferroin

6 May, 2014 - 20:54

Chem. Commun., 2014, 50,5861-5863
DOI: 10.1039/C4CC01613K, CommunicationTakashi Arimura, Masaru Mukai
In the wake of the Belousov-Zhabotinsky reaction catalyzed by ferroin, the swelling-deswelling oscillating soft actuator exhibits 7 min period of self-oscillation for the first time.
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