Chem. Commun.

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Anion binding modes in cis-trans-isomers of a binding site-fluorophore-[small pi]-extended system

2 November, 2014 - 16:54

Chem. Commun., 2014, 50,14748-14751
DOI: 10.1039/C4CC07308H, CommunicationMin Zhou, Jinju Chen, Chuanxiang Liu, Hanghai Fu, Nan Zheng, Chuanxiu Zhang, Yong Chen, Jiagao Cheng
The cis- and trans-conformational isomers revealed moderately different binding modes in the detection of CN- ions for the first time.
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A highly sensitive ratiometric electrochemiluminescent biosensor for microRNA detection based on cyclic enzyme amplification and resonance energy transfer

2 November, 2014 - 16:54

Chem. Commun., 2014, 50,14828-14830
DOI: 10.1039/C4CC06801G, CommunicationNan Hao, Xiang-Ling Li, Huai-Rong Zhang, Jing-Juan Xu, Hong-Yuan Chen
A ratiometric electrochemiluminescent biosensor for the detection of microRNAs based on cyclic enzyme amplification and resonance energy transfer was reported.
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The first route to highly stable crystalline microporous zirconium phosphonate metal-organic frameworks

2 November, 2014 - 16:54

Chem. Commun., 2014, 50,14831-14834
DOI: 10.1039/C4CC06223J, CommunicationMarco Taddei, Ferdinando Costantino, Fabio Marmottini, Angiolina Comotti, Piero Sozzani, Riccardo Vivani
The first crystalline microporous zirconium phosphonate metal-organic framework (UPG-1) was synthesized using the novel tritopic ligand 2,4,6-tris(4-(phosphonomethyl)phenyl)-1,3,5-triazine.
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Reversible transformation between chiral and achiral Dy6Mo4 clusters through a symmetric operation

31 October, 2014 - 16:17

Chem. Commun., 2014, 50,14728-14731
DOI: 10.1039/C4CC07047J, CommunicationYong Zheng, Yin-Yin Pan, Yan-Ping Ren, La-Sheng Long, Rong-Bin Huang, Lan-Sun Zheng
The achiral cluster I, with S4 symmetry, can transform into chiral II and III, with C2 symmetry, via replacement of the NH4+ cation in I with Et3NH+ and Me4N+, respectively. And the transformation between chiral and achiral clusters is reversible.
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Spontaneous formation of organic helical architectures through dynamic covalent chemistry

31 October, 2014 - 16:17

Chem. Commun., 2014, 50,14744-14747
DOI: 10.1039/C4CC07263D, CommunicationWenfang Li, Zeyuan Dong, Junyan Zhu, Quan Luo, Junqiu Liu
Using dynamic covalent chemistry, achiral and chiral building blocks are capable of self-organizing into organic helical structures, accompanied with chiral amplification.
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A novel Pd-catalyzed N-dealkylative carbonylation of tertiary amines for the preparation of amides

31 October, 2014 - 16:17

Chem. Commun., 2014, 50,14775-14777
DOI: 10.1039/C4CC07378A, CommunicationTao Fang, Xu-Hong Gao, Ri-Yuan Tang, Xing-Guo Zhang, Chen-Liang Deng
We report a novel and efficient method for the synthesis of amides via Pd-catalyzed N-dealkylative carbonylation of alkyl tertiary amines.
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Acid- and base-functionalized core-confined bottlebrush copolymer catalysts for one-pot cascade reactions

31 October, 2014 - 16:17

Chem. Commun., 2014, 50,14778-14781
DOI: 10.1039/C4CC06573E, CommunicationLinfeng Xiong, Hui Zhang, Aiqing Zhong, Zidong He, Kun Huang
A novel method that enables the formation of core-confined bottlebrush copolymers (CCBCs) as catalyst supports for one-pot cascade reactions is reported for the first time.
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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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