Chem. Commun.

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Highly-effective gating of single-molecule junctions: an electrochemical approach

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15975-15978
DOI: 10.1039/C4CC06519K, CommunicationMasoud Baghernejad, David Zsolt Manrique, Chen Li, Thomas Pope, Ulmas Zhumaev, Ilya Pobelov, Pavel Moreno-Garcia, Veerabhadrarao Kaliginedi, Cancan Huang, Wenjing Hong, Colin Lambert, Thomas Wandlowski
We report an electrochemical gating approach with [similar]100% efficiency to tune the conductance of single-molecule 4,4[prime or minute]-bipyridine junctions.
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Unprecedented synthesis of aza-bridged benzodioxepine derivatives through a tandem Rh(II)-catalyzed 1,3-rearrangement/[3+2] cycloaddition of carbonyltriazoles

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15971-15974
DOI: 10.1039/C4CC08339C, CommunicationYong-Sheng Zhang, Xiang-Ying Tang, Min Shi
Rh(II)-catalyzed novel tandem intramolecular cycloisomerizations of aldehydes or ketones with 1-sulfonyl 1,2,3-triazoles have been disclosed, providing a facile protocol to access a series of functionalized aza-bridged benzodioxepine heterocycles.
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Zirconium complexes of bipyrrolidine derived salan ligands for the isoselective polymerisation of rac-lactide

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15967-15970
DOI: 10.1039/C4CC07871C, CommunicationOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Matthew D. Jones, Stuart L. Hancock, Paul McKeown, Pascal M. Schafer, Antoine Buchard, Lynne H. Thomas, Mary F. Mahon, John P. Lowe
We report a series of Zr(IV) 2,2[prime or minute]-bipyrrolidine-salan derived complexes and their exploitation for the ROP of rac-lactide to afford highly isotactically enriched PLA.
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Direct asymmetric hydrogenation of [small alpha]-keto acids by using the highly efficient chiral spiro iridium catalysts

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15987-15990
DOI: 10.1039/C4CC07643E, CommunicationPu-Cha Yan, Jian-Hua Xie, Xiang-Dong Zhang, Kang Chen, Yuan-Qiang Li, Qi-Lin Zhou, Da-Qing Che
The Ir/SpiroPAP catalyzed direct asymmetric hydrogenation of [small alpha]-keto acids under mild reaction conditions has been developed.
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An improved organic/inorganic solid receptor for colorimetric cyanide-chemosensing in water: towards new mechanism aspects, simplistic use and portability

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15983-15986
DOI: 10.1039/C4CC06756H, CommunicationArash Mouradzadegun, Fatemeh Abadast
A new synergy between an organic receptor and an inorganic matrix was developed to form a heterogeneous chemosensor for the naked-eye colorimetric sensing of cyanide in pure water.
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A new mode to light up an adjacent DNA-scaffolded silver probe pair and its application for specific DNA detection

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15991-15994
DOI: 10.1039/C4CC07209J, CommunicationBin-Cheng Yin, Jin-Liang Ma, Huynh-Nhu Le, Shilong Wang, Zengguang Xu, Bang-Ce Ye
By fluorescence enhancement of a proximity-dependent DNA-scaffolded silver nanocluster probe pair and exonuclease III-mediated signal amplification, we present a new fluorescence turn-on mode and its application for specific DNA detection.
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Rim-functionalized cryptophane-111 derivatives via heterocapping, and their xenon complexes

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15905-15908
DOI: 10.1039/C4CC08001G, CommunicationAkil I. Joseph, Gracia El-Ayle, Celine Boutin, Estelle Leonce, Patrick Berthault, K. Travis Holman
Rim-functionalization of cryptophane-111 narrows the achievable conformational range of the cage, resulting in unprecedentedly crowded Xe@cryptophane complexes.
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Tetraiodoethynyl resorcinarene cavitands as multivalent halogen bond donors

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15920-15923
DOI: 10.1039/C4CC07771G, CommunicationL. Turunen, N. K. Beyeh, F. Pan, A. Valkonen, K. Rissanen
The first examples of iodoethynyl resorcinarene cavitands as rigid 3D halogen bond (XB) donor molecules are presented. These concave macrocycles form strong, RXB = 0.78-0.83, halogen bonds with dioxane oxygen, pyridine nitrogen and a bromide anion in tetraproropyl ammonium bromide resulting in deep cavity cavitand structures.
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A new method for peptide synthesis in the N[rightward arrow]C direction: amide assembly through silver-promoted reaction of thioamides

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15963-15966
DOI: 10.1039/C4CC07601J, CommunicationAysa Pourvali, James R. Cochrane, Craig A. Hutton
The Ag(I)-promoted coupling of peptide-acids with thioamides generates peptide-imides, which was exploited in the synthesis of peptides in the N[rightward arrow]C direction.
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Fluorometric assay of integrin activity with a small-molecular probe that senses the binding site microenvironment

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15894-15896
DOI: 10.1039/C4CC05591H, CommunicationToru Komatsu, Aoi Takeda, Kenjiro Hanaoka, Takuya Terai, Tasuku Ueno, Yukio Tada, Tetsuo Nagano, Yasuteru Urano
We have developed a small-molecular probe, consisting of cyclic RGD pentapeptide bearing a nitrobenzoxadiazole fluorophore at the 4[prime or minute]-residue, which detects integrin [small alpha]V[small beta]3 activity in terms of fluorescence intensity decrease.
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Two act as one: unexpected dimers of catechol direct a solid-state [2+2] photodimerization in a six-component hydrogen-bonded assembly

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15960-15962
DOI: 10.1039/C4CC07747D, CommunicationGiannis S. Papaefstathiou, Andrew J. E. Duncan, Leonard R. MacGillivray
Catechol self-assembles as a dimer to function as template that directs a [2+2] photodimerization in the solid state.
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Mechanical grinding of a single-crystalline metal-organic framework triggered emission with tunable violet-to-orange luminescence

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15956-15959
DOI: 10.1039/C4CC08316D, CommunicationJian-Ke Sun, Cheng Chen, Li-Xuan Cai, Cai-Xia Ren, Bin Tan, Jie Zhang
For the first time, a Borromean entangled metal-organic framework has been explored as a novel platform for developing mechanochromic luminescence with unique on-off switching and tunable multicolor emission.
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A click-and-release approach to CO prodrugs

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15890-15893
DOI: 10.1039/C4CC07748B, CommunicationDanzhu Wang, Emilie Viennois, Kaili Ji, Krishna Damera, Alexander Draganov, Yueqing Zheng, Chaofeng Dai, Didier Merlin, Binghe Wang
Carbon monoxide belongs to the family of signaling molecules and has been shown to possess therapeutic effects.
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A 3D MOF showing unprecedented solvent-induced single-crystal-to-single-crystal transformation and excellent CO2 adsorption selectivity at room temperature

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15886-15889
DOI: 10.1039/C4CC06588C, CommunicationTao Qin, Jun Gong, Junhan Ma, Xin Wang, Yonghua Wang, Yan Xu, Xuan Shen, Dunru Zhu
A multifunctional MOF material showing rare solvent-induced structural transformation with substitution of bridging-water and guest-exchange at 298 K is reported.
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Sub-20 nm-Fe3O4 square and circular nanoplates: synthesis and facet-dependent magnetic and electrochemical properties

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15952-15955
DOI: 10.1039/C4CC06064D, CommunicationTao Luo, Qiang-Qiang Meng, Chao Gao, Xin-Yao Yu, Yong Jia, Bai Sun, Zhen Jin, Qun-Xiang Li, Jin-Huai Liu, Xing-Jiu Huang
We present an effective method to synthesize 15 nm magnetite nanocrystals with the morphology of square and circular nanoplates, which expose (001) facet and (111) facet, respectively.
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Self-assembled graphene oxide microcapsules with adjustable permeability and yolk-shell superstructures derived from atomized droplets

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15867-15869
DOI: 10.1039/C4CC07734B, CommunicationWanbin Li, Yufan Zhang, Zehai Xu, Asang Yang, Qin Meng, Guoliang Zhang
Graphene oxide is self-assembled on atomized droplets to obtain microcapsules with adjustable permeability and yolk-shell superstructures by a spray-drying strategy.
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Direct C-H difluoromethylenephosphonation of arenes and heteroarenes with bromodifluoromethyl phosphonate via visible-light photocatalysis

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15916-15919
DOI: 10.1039/C4CC07925F, CommunicationLin Wang, Xiao-Jing Wei, Wen-Long Lei, Han Chen, Li-Zhu Wu, Qiang Liu
Direct C-H difluoromethylenephosphonation of arenes and heteroarenes with bromodifluoromethyl phosphonate under visible-light irradiation is achieved through addition of phosphonodifluoromethyl (PDFM) radicals to aromatic rings.
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Toll-like receptor agonist lipopeptides self-assemble into distinct nanostructures

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15948-15951
DOI: 10.1039/C4CC07511K, CommunicationOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Ian W. Hamley, Steven Kirkham, Ashkan Dehsorkhi, Valeria Castelletto, Mehedi Reza, Janne Ruokolainen
The self-assembled structure of toll-like receptor agonist lipopeptides containing the CSK4 peptide sequence is examined in aqueous solution.
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A highly efficient asymmetric synthesis of quaternary stereocenter-containing indolizidine and quinolizidine alkaloids using aldehydes, nitroalkenes, and unactivated cyclic ketimines

22 November, 2014 - 21:54

Chem. Commun., 2014, 50,15913-15915
DOI: 10.1039/C4CC07703B, CommunicationYu Tan, Yong-Jian Chen, Hua Lin, Han-Lin Luan, Xing-Wen Sun, Xiao-Di Yang, Guo-Qiang Lin
A highly efficient approach to the construction of indolizidines and quinolizidines bearing a bridged quaternary stereocenter has been established in a one-pot fashion using aldehydes, nitroalkenes, and cyclic ketimines.
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Acetylene bubble-powered autonomous capsules: towards in situ fuel

20 November, 2014 - 21:17

Chem. Commun., 2014, 50,15849-15851
DOI: 10.1039/C4CC07218A, CommunicationJames Guo Sheng Moo, Hong Wang, Martin Pumera
A fuel-free autonomous self-propelled motor powered by acetylene bubbles is illustrated.
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