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266 Newest Publications in chemical communication

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Tuning selectivity of triplex DNA receptors

29-10-2014 | Haidong Huang; Peter C Tlatelpa, Chemical Communication, 2014

Effects of hydrogen bonding clamps on the selectivity of triplex DNA receptors were studied. Incorporation of a 5-methyl-2-thiocytosine base to the parallel homopyrimidine region of a triplex receptor enabled selective molecular recognition of an inosine ligand.

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Recent advances in asymmetric organocatalysis mediated by bifunctional amine-thioureas bearing multiple hydrogen-bonding donors

28-10-2014 | Chun-Jiang Wang; Xin Fang, Chemical Communication, 2014

Organocatalysis has proven to be one of the most rapidly developing and competitive research areas in asymmetric catalysis since 2000, and has become a third branch besides biocatalysis and transition metal catalysis. In this feature article, recent progresses from our research group on ...

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Is it Possible to Achieve a Complete Desaturation of Cycloalkanes Promoted by o-Benzyne?

28-10-2014 | Francisco Cervantes; Abel de Cozar; Fernando Cossio; Maria Fernandez-Herrera; Gabriel Merino; Israel Fernandez, Chemical Communication, 2014

The competence between the possible reaction pathways in the reaction of different cycloalkanes and o-benzyne has been computationally explored. Systems able to undergo complete desaturation by consecutive double hydrogen atom transfer reactions are suggested.

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The hydrogen/deuterium isotope effect of the host material on the lifetime of organic light-emitting diodes

22-10-2014 | Hayato Tsuji; Chikahiko Mitsui; Eiichi Nakamura, Chemical Communication, 2014

The hydrogen/deuterium primary kinetic isotope effect provides useful information about the degradation mechanism of OLED host materials. Thus, replacement of labile C–H bonds in the host with C–D bonds increases the device lifetime by a factor of five without loss of efficiency, and replacement ...

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Platinum nanoparticles strongly associated with graphitic carbon nitride as efficient co-catalysts for photocatalytic hydrogen evolution under visible light

21-10-2014 | Yasuhiro Shiraishi; Yusuke Kofuji; Shunsuke Kanazawa; Hirokatsu Sakamoto; Satoshi Ichikawa; Shunsuke Tanaka; Takayuk ..., Chemical Communication, 2014

Platinum (Pt) nanoparticles with <4 nm diameter loaded on graphitic carbon nitride (g-C3N4) by reduction at 673 K behave as efficient co-catalysts for photocatalytic hydrogen evolution under visible light (λ

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Catalytic methylation of aromatic amines with formic acid as the unique carbon and hydrogen source

21-10-2014 | Solène Savourey; Guillaume Lefèvre; Jean-Claude Berthet; Thibault Cantat, Chemical Communication, 2014

A novel methodology is presented for the direct methylation of amines, using formic acid as a unique source of carbon and hydrogen. Based on ruthenium(ii) catalysts, the formation of the N–CH3 group proceeds via an efficient formylation/transfer hydrogenation pathway.

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Separation of planar rotamers through intramolecular hydrogen bonding in polysubstituted 5-nitrosopyrimidines

21-10-2014 | L. Čechová; E. Procházková; I. Císařová; M. Dračínský; Z. Janeba, Chemical Communication, 2014

While purifying new polysubstituted 5-nitrosopyrimidines, the unique separation of pairs of rotamers as chemical species, stabilized by a single intramolecular hydrogen bond and differing only in nitroso group orientation, was achieved. This interesting stereochemical phenomenon is compared to ...

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Redox-induced fluoride ligand dissociation stabilized by intramolecular hydrogen bonding

21-10-2014 | Cameron M. Moore; Nathaniel K. Szymczak, Chemical Communication, 2014

Chemical reduction of a tripodal Cu(ii)–F complex containing pendent hydroxyl groups results in the partial dissociation of a F− ligand from Cu. The resulting Cu(i) complex is characterized as containing an outer sphere F− anion ‘captured’ by hydrogen bonds. The pendent hydroxyl groups were found ...

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Organic Mixed Valency in Quadruple Hydrogen-bonded Triarylamine Dimers Bearing Ureido Pyrimidinedione Moieties

15-10-2014 | Keishiro Tahara; Tetsufumi Nakakita; Shohei Katao; Jun-ichi Kikuchi, Chemical Communication, 2014

Triarylamine derivatives bearing an ureido pyrimidinedione moiety were synthesised and formed dimers in the solid state and solution through quadruple hydrogen-bonds. These bonding interactions stabilized the mixed-valence states of the tri-arylamine dimers without any electronic coupling between ...

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Optimization of proton conductivity in graphene oxide by filling sulfate ions

15-10-2014 | Kazuto Hatakeyama; Mohammad Razaul Karim; Chikako Ogata; Hikaru Tateishi; Takaaki Taniguchi; Michio Koinuma; Shinya ..., Chemical Communication, 2014

Graphene oxide (GO) walled channels filled by sulfate ions exhibit an optimized proton conductivity, which is higher than the proton conductivity of all other forms of GO. The sulphate ion increases the water absorbing capacity and hydrogen bond reformation process in GO.

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