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263 Newest Publications in chemical communication

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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 ...


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


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.


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 ...


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 ...


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 ...


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.


Supramolecular pyridyl urea gels as soft matter with antibacterial properties against MRSA and/or E. coli

09-10-2014 | Thorfinnur Gunnlaugsson; Komala Pandurangan; Jonathan A Kitchen; Salvador Blasco; Francesca Paradisi, Chemical Communication, 2014

The synthesis and characterisation of novel aryl-pyridyl ureas is described, which form self-assembly structures via extended hydrogen bonding and π−π interactions in the solid state, and in selected cases, forms supramolecular organo- or hydrogels with antimicrobial properties against ...


Highly efficient photocatalytic hydrogen evolution by nickel phosphide nanoparticles from aqueous solution

09-10-2014 | Shuang Cao; Yong Chen; Chuan-Jun Wang; Ping He; Wen-Fu Fu, Chemical Communication, 2014

Monodispersed nickel phosphide (Ni2P) nanoparticles were for the first time applied to photocatalytic hydrogen evolution from lactic acid aqueous solution under visible light LED irradiation using CdS nanorods as a photosensitizer. The system exhibited high photocatalytic hydrogen-generating ...


Incorporation of iron hydrogenase active sites into a highly stable metal–organic framework for photocatalytic hydrogen generation

09-10-2014 | Koroush Sasan; Qipu Lin; ChengYu Mao; Pingyun Feng, Chemical Communication, 2014

A new biomimetic heterogeneous photocatalyst ([FeFe]@ZrPF) has been synthesized through the incorporation of homogeneous complex 1 [(í-SCH2)2NC(O)C5H4N]–[Fe2(CO)6] into the highly robust zirconium-porphyrin based metal–organic framework (ZrPF). The immobilized biomimetic [Fe2S2] catalyst inside ...


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