Chem. Commun.

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Solid phase microextraction (SPME)-transmission mode (TM) pushes down detection limits in direct analysis in real time (DART)

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12937-12940
DOI: 10.1039/C4CC05301J, CommunicationGerman Augusto Gomez-Rios, Janusz Pawliszyn
A simple, integrated and rapid approach for the quantitation of target analytes in complex matrices using SPME-TM and DART-MS/MS is described.
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SmI2-H2O-mediated 5-exo/6-exo lactone radical cyclisation cascades

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12863-12866
DOI: 10.1039/C4CC05404K, CommunicationIrem Yalavac, Sarah E. Lyons, Michael R. Webb, David J. Procter
5-exo/6-exo lactone radical cyclisation cascades deliver carbo[5.4.0]bicycles in a diastereoselective, one-pot process using SmI2 in the presence of H2O.
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Oxidative coupling of alkenes with amides using peroxides: selective amide C(sp3)-H versus C(sp2)-H functionalization

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12867-12869
DOI: 10.1039/C4CC05051G, CommunicationXu-Heng Yang, Wen-Ting Wei, Hai-Bing Li, Ren-Jie Song, Jin-Heng Li
A new oxidative coupling of alkenes with amides to achieve mono- and difunctionalization of alkenes is described.
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Sign inversion of circularly polarized luminescence by geometry manipulation of four naphthalene units introduced into a tartaric acid scaffold

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12836-12839
DOI: 10.1039/C4CC04228J, CommunicationTomoyuki Amako, Kazuki Nakabayashi, Tadashi Mori, Yoshihisa Inoue, Michiya Fujiki, Yoshitane Imai
Tethering four 1- vs. 2-naphthyls to the same chiral scaffold derived from tartaric acid led to oppositely signed circularly polarized luminescence and circular dichroism.
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Structure, photochemistry and applications of metal-doped polyoxotitanium alkoxide cages

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12815-12823
DOI: 10.1039/C4CC04421E, Feature ArticlePeter D. Matthews, Timothy C. King, Dominic S. Wright
Metal-doped polyoxotitanium cages can be regarded as molecular fragments of metal-doped TiO2 and can be used as structural models for the inclusion of metal ions into the TiO2 lattice. They are potential organically-soluble redox-catalysts for a range of organic transformations and have been shown to be useful single-source precursors for the deposition of metal-doped TiO2.
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Catalysis by metal-organic frameworks in water

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12800-12814
DOI: 10.1039/C4CC04387A, Feature ArticleAmarajothi Dhakshinamoorthy, Abdullah M. Asiri, Hermenegildo Garcia
This review aims to represent the recent developments in metal-organic framework catalyzed reactions in aqueous medium.
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Synthesis, solution-processed thin film transistors and solid solutions of silylethynylated diazatetracenes

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12828-12831
DOI: 10.1039/C4CC04627G, CommunicationXiaomin Xu, Bowen Shan, Sergii Kalytchuk, Minghua Xie, Shuaijun Yang, Danqing Liu, Stephen V. Kershaw, Qian Miao
Silylethynylated diazatetracenes function as solution-processed n-type semiconductors with a field effect mobility of 0.65 cm2 V-1 s-1, and co-crystallize with silylethynylated tetracene forming solid solutions.
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Reduction of CO2 to free CO by a Pd(I)-Pd(I) dimer

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12840-12842
DOI: 10.1039/C4CC02438A, CommunicationChandra Mouli Palit, Daniel J. Graham, Chun-Hsing Chen, Bruce M. Foxman, Oleg V. Ozerov
Reaction of CO2 with a Pd(I)-Pd(I) dimer produces free CO in the presence of Me3SiCl or Me3SiOTf.
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An "Off-axis" Mn-Mn bond in Mn2(CO)10 at high pressure

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12824-12827
DOI: 10.1039/C4CC04152F, CommunicationPiero Macchi, Nicola Casati, Shaun R. Evans, Fabia Gozzo, Petra Simoncic, Davide Tiana
Pressure induces an "off-axis" Mn-Mn bond in crystals of Mn2(CO)10, but no eclipsing of the equatorial carbonyls was observed.
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A novel Affibody bioconjugate for dual-modality imaging of ovarian cancer

1 October, 2014 - 08:54

Chem. Commun., 2014, 50,12832-12835
DOI: 10.1039/C4CC03454F, CommunicationYihong Wang, Zheng Miao, Gang Ren, Yingding Xu, Zhen Cheng
An Affibody based dual imaging probe (PET and optical imaging) has been successfully developed. Dendrimer PAMAM G0 was used as a platform to assemble an NIRF dye, a metal chelator, and Affibody for dual modality imaging of ovarian cancer. Excellent tumor imaging quality was achieved in both modalities in the living tumor mice models.
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Site-specific, reversible and fluorescent immobilization of proteins on CrAsH-modified surfaces for microarray analytics

29 September, 2014 - 08:17

Chem. Commun., 2014, 50,12761-12764
DOI: 10.1039/C4CC04120H, CommunicationJanine Schulte-Zweckel, Federica Rosi, Domalapally Sreenu, Hendrik Schroder, Christof M. Niemeyer, Gemma Triola
A novel technique for protein immobilization is presented. This approach enables an efficient, reversible and fluorogenic immobilization and the direct detection of the immobilized proteins without the need for secondary detection steps or label-free methods.
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High solid-state fluorescence in ring-shaped AEE-active tetraphenylsilole derivatives

29 September, 2014 - 08:17

Chem. Commun., 2014, 50,12714-12717
DOI: 10.1039/C4CC06203E, CommunicationYuanjing Cai, Kerim Samedov, Haley Albright, Brian S. Dolinar, Ilia A. Guzei, Rongrong Hu, Chaocan Zhang, Ben Zhong Tang, Robert West
Simple ring-shaped tetraphenylsilole derivatives with high solid-state fluorescence.
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Residual metallic impurities within carbon nanotubes play a dominant role in supposedly "metal-free" oxygen reduction reactions

29 September, 2014 - 08:17

Chem. Commun., 2014, 50,12662-12664
DOI: 10.1039/C4CC03271C, CommunicationLu Wang, Martin Pumera
ORR electrocatalysis on the supposedly metal-free carbon nanotubes is in fact due to the presence of residual metallic impurities within.
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Size-dependent patterned recognition and extraction of metal ions by a macrocyclic aromatic pyridone pentamer

29 September, 2014 - 08:17

Chem. Commun., 2014, 50,12730-12733
DOI: 10.1039/C4CC05197A, CommunicationJie Shen, Wenliang Ma, Lin Yu, Jin-Bo Li, Hu-Chun Tao, Kun Zhang, Huaqiang Zeng
A macrocyclic aromatic pyridine pentamer was found to exhibit patterned recognition of metal ions and efficiently extract larger ions, such as Cs+, Ba2+, Tl+, Au+, K+ and Rb+ preferentially over the other 18 smaller metal ions from the aqueous phase into the chloroform layer.
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Alkaline earth catalysis for the 100% atom-efficient three component assembly of imidazolidin-2-ones

29 September, 2014 - 08:17

Chem. Commun., 2014, 50,12676-12679
DOI: 10.1039/C4CC05223D, CommunicationMerle Arrowsmith, William M. S. Shepherd, Michael S. Hill, Gabriele Kociok-Kohn
A variety of functionalised imidazolidin-2-ones may be synthesised under very mild reaction conditions using non-toxic and cost-effective alkaline earth bis(amide) pre-catalysts in a 100% atom-efficient, intermolecular one-pot assembly from inexpensive alkyne and cumulene reagents.
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Spiranic BODIPYs: a ground-breaking design to improve the energy transfer in molecular cassettes

29 September, 2014 - 08:17

Chem. Commun., 2014, 50,12765-12767
DOI: 10.1039/C4CC05709K, CommunicationEsther M. Sanchez-Carnerero, Leire Gartzia-Rivero, Florencio Moreno, Beatriz L. Maroto, Antonia R. Agarrabeitia, Maria J. Ortiz, Jorge Banuelos, Inigo Lopez-Arbeloa, Santiago de la Moya
From a flexible cassette it is possible to boost the EET by a simple spiranic design.
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Polydimethylsiloxane coated glass frits for low-cost and reusable water-organic solvent separation

29 September, 2014 - 08:17

Chem. Commun., 2014, 50,12656-12658
DOI: 10.1039/C4CC05663A, CommunicationRavi Raninga, Kristopher Page, Ivan P. Parkin
A technique for functionalizing glass frits is described for use in separating water and organic solvents.
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Highly unusual interpenetration isomers of electroactive nickel bis(dithiolene) coordination frameworks

29 September, 2014 - 08:17

Chem. Commun., 2014, 50,12772-12774
DOI: 10.1039/C4CC05438E, CommunicationThomas B. Faust, Pavel M. Usov, Deanna M. D'Alessandro, Cameron J. Kepert
Two highly unusual isomeric coordination frameworks incorporating the nickel bis(dithiolate) metalloligand exhibit cyclable electroactive properties.
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Distance dependent charge separation and recombination in semiconductor/molecular catalyst systems for water splitting

29 September, 2014 - 08:17

Chem. Commun., 2014, 50,12768-12771
DOI: 10.1039/C4CC05143B, CommunicationOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Anna Reynal, Janina Willkomm, Nicoleta M. Muresan, Fezile Lakadamyali, Miquel Planells, Erwin Reisner, James R. Durrant
The molecular structure of the catalyst strongly influences the kinetics of charge separation and recombination.
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Synthesis of nitrogen-containing fused-polycyclic compounds from tyramine derivatives using phenol dearomatization and cascade cyclization

29 September, 2014 - 08:17

Chem. Commun., 2014, 50,12775-12778
DOI: 10.1039/C4CC04809A, CommunicationTakuya Yokosaka, Tetsuhiro Nemoto, Hiroki Nakayama, Naoki Shiga, Yasumasa Hamada
We developed a novel method of synthesizing fused-heterocycles from tyramine derivatives using the phenol dearomatization-cascade cyclization strategy.
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