The Asian Chemical Editorial Society (ACES) is an organization of 13 major chemical societies in Asia and the Pacific. It was founded in 2005 as a conglomeration of chemical societies with the mutual aim of creating a modern publishing forum for research in Asia and coordinating future publishing activities.
The participating societies share a commitment to scientific excellence, to publishing ethics, and to the highest standards in publication, which are the basis for the success of Chemistry—An Asian Journal and its associated journals.
A sister journal of Angewandte Chemie and Chemistry—A European Journal
A sister journal of the European Journal of Organic Chemistry
For the publication of the AsianJOC, ACES is joined by the Korean Society of Organic Synthesis.
Supporting Organization: ChemPubSoc Europe
ACES supports the publication of the ChemPubSoc Europe journals Chemistry—A European Journal, the European Journal of Organic Chemistry, and ChemSusChem.
© Wiley-VCH 2012
A Good Year
Chem. Asian J. 2014 9, 4.
There's an App for That
Asian J. Org. Chem. 2014 3, 3.
To be or not to be (cationic)? In the presence of monomer, neutral 16-electron N-heterocyclic carbene adducts of high oxidation state MoVI N-arylimidoalkylidene bis(triflate) complexes convert into cationic 16-electron complexes that are active and functional-group tolerant polymerization catalysts.
Michael R. Buchmeiser, Suman Sen, Jörg Unold, Wolfgang Frey
Angew. Chem. Int. Ed. 2014, 53, No. 35, 9384. Read article.
In contrast to the general view, graphite can be used as an electrode material in sodium-ion batteries by taking advantage of the formation of ternary graphite intercalation compounds. The important features of this electrode reaction are the small irreversible capacity, the low overpotentials, and the superior cycle life. With a capacity close to 100 mAh g−1, the electrode is attractive for stationary applications.
Birte Jache, Philipp Adelhelm
Angew. Chem. Int. Ed. 2014, 53, No. 38, 10169. Read article.
Going up! The upward trend in efficiency of lanthanide (Ln) triflates in catalyzing aromatic sulfonylation reaction correlates with the lanthanide sequence in the periodic table. Various related physical properties of lanthanide ions were found to have some influence on the catalytic activity.
Vo Thu An Nguyen, Fritz Duus, Thach Ngoc Le
Asian J. Org. Chem. 2014, 3, No. 9, 963. Read article.
Communication breakdown: Dyads and triads composed of fullerenes and pyrrolotetrathiafulvalenes were prepared by Prato cycloaddition reactions and subjected to detailed electrochemical and photophysical studies, including absorption and fluorescence spectroscopy, as well as femtosecond and nanosecond transient absorption studies, which indicated no observable electronic communication between the tetrathiafulvalene and the C60 moieties (see figure). The dyad and triad molecules form self-assembled monolayers on gold surfaces.
Marta Vico Solano, Eduardo Antonio Della Pia, Martyn Jevric, Christina Schubert, Xintai Wang, Cornelia van der Pol, Anders Kadziola, Kasper Nørgaard, Dirk M. Guldi, Mogens Brøndsted Nielsen, Jan O. Jeppesen
Chem. Eur. J. 2014, 20, No. 32, 9918. Read article.
Stuck on Au: A model system is defined that allows the quantification of nanoparticle adsorption energy under conditions that satisfy the assumptions of the Langmuir adsorption model. This advance could enable fundamental studies of nanoparticles relating to adsorption chemistry, biological processes, and materials by design.
Matthew N. O'Brien, Boya Radha, Keith A. Brown, Matthew R. Jones, Chad A. Mirkin
Angew. Chem. Int. Ed. 2014, 53, No. 36, 9532. Read article.
Coming up for air: Cu/nitroxyl catalysts for aerobic alcohol oxidation have been developed that exhibit near-ideal reaction conditions: operation at room temperature, use of ambient air as the oxidant, and complete reaction within one hour. These methods, together with related amine oxidations, have the potential to be the first class of aerobic oxidation reactions widely used in organic chemistry.
Bradford L. Ryland, Shannon S. Stahl
Angew. Chem. Int. Ed. 2014, 53, No. 34, 8824. Read article.
Hybridization and structure of exocyclic amino groups of cytosine and adenine nucleobases can shift from sp2 to sp3 (see graphic) if an amino proton acts as a donor in a strong hydrogen-bonding interaction or if it is replaced by a monofunctionally bonded metal ion.
Célia Fonseca Guerra, Pablo J. Sanz Miguel, Andrea Cebollada, F. Matthias Bickelhaupt, Bernhard Lippert
Chem. Eur. J. 2014, 20, No. 31, 9494. Read article.
A bit hyper: A practical approach for the oxidation of unactivated Csp3-H bonds by o-nitro(diacetoxyiodo)benzene is presented. The nitro group coordinates to the adjacent iodine center through dipolar interaction, which leads to a single substitution of the acetate ligand by tert-butyl hydroperoxide (TBHP). As a result, a strong iodanyl radical is formed, which can activate the inert Csp3-H bonds in a highly efficient manner.
Shin A. Moteki, Sermadurai Selvakumar, Tiexin Zhang, Asuka Usui, Keiji Maruoka
Asian J. Org. Chem. 2014, 3, No. 9, 932. Read article.
This Focus Review describes recent efforts in developing light-controlled switchable compounds and their applications in biological systems. In particular, photoisomerization reactions of azobenzene as well as synthetic green fluorescent protein chromophores are discussed.
Asian J. Org. Chem. 2014, 3, No. 8, 830. Read article.
Photochemical OFF→ON switching of proteins: Caged cysteine and caged homocysteine were genetically incorporated into proteins in bacterial and mammalian cells, allowing photochemical control over the activity of these proteins and thus offering the potential for precise spatial and temporal regulation of a wide range of cellular processes.
Rajendra Uprety, Ji Luo, Jihe Liu, Yuta Naro, Subhas Samanta, Alexander Deiters
ChemBioChem 2014, 15, No. 12, 1793. Read article.
A diketopyrrolopyrrole (DPP) dimer is synthesized by combining electron-rich benzodithiophene-thiophene and electron-deficient DPP. It has energy levels what match with [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM) and a broad UV/vis absorption spectrum. With PC71BM as the acceptor, the power conversion efficiency is 3.90 %, the short-circuit current density is 9.85 mA cm−2, the open-circuit voltage is 0.71 V, and the fill factor is 0.57.
Zhixiao Niu, Xue Wang, Jianhua Huang, Ailing Tang, Yuxi Sun, Chuanlang Zhan
Asian J. Org. Chem. 2014, 3, No. 9, 948. Read article.
An efficient methodology for the solid-phase synthesis of cyclic lipopeptidotriazoles involving the use of five orthogonal protecting groups has been established. This strategy has been used to prepare a set of derivatives of the antimicrobial cyclic peptide BPC194 in high purities.
Sílvia Vilà, Cristina Camó, Eduard Figueras, Esther Badosa, Emilio Montesinos, Marta Planas, Lidia Feliu
Eur. J. Org. Chem. 2014, No. 22, 4785. Read article.
A bridged diazocine has been synthesized whose switching direction is restricted to one side. The diazocine was mounted onto a molecular platform which is known to have a high affinity to gold Au(111) surfaces. Upon irradiation of the thermodynamically more stable cis configuration in solution with light of 385 nm the trans isomer is formed and with green light (530 nm) back-isomerization to the cis form is achieved.
Tobias Tellkamp, Jun Shen, Yoshio Okamoto, Rainer Herges
Eur. J. Org. Chem. 2014, No. 25, 5456. Read article.
The structure–function relationship of a U-turn motif in the terminal loop of a synthetic neomycin riboswitch has been investigated. The analysis revealed those nucleobases required to optimize riboswitch function at every single position. A detailed comparison of functional and inactive mutants revealed a relationship between aptamer dynamics and regulation efficiency.
Julia E. Weigand, Sina R. Gottstein-Schmidtke, Shemsi Demolli, Florian Groher, Elke Duchardt-Ferner, Jens Wöhnert, Beatrix Suess
ChemBioChem 2014, 15, No. 11, 1627. Read article.
A bit bulkier is too much: A combined experimental and computational DFT study has shown that the terminal to bridging transformation of an amidinate–tetrylene unit on a dicobalt carbonyl complex is negligibly influenced by the nature of the tetrylene Group 14 donor atom (Si or Ge; see figure), but is strongly dependent upon the steric hindrance exerted by the amidinate N-R groups because the reaction is thermodynamically favorable for R=iPr but not for R=tBu.
Javier A. Cabeza, Pablo García-Alvarez, Enrique Pérez-Carreño, Diego Polo
Chem. Eur. J. 2014, 20, No. 28, 8654. Read article.
Disilicon ligand: The reaction of N-heterocyclic-carbene-stabilized disilicon with CuCl gave a carbene-stabilized disilicon–copper(I) chloride complex (see figure). The nature of the structure and bonding in this complex was investigated by experimental, spectroscopic, and computational methods. The dynamic complexation behavior of the compound was explored by variable-temperature NMR experiments.
Mingwei Chen, Yuzhong Wang, Yaoming Xie, Pingrong Wei, Robert J. Gilliard, Jr.Nichole A. Schwartz, Henry F. Schaefer, IIIPaul von R. Schleyer, Gregory H. Robinson
Chem. Eur. J. 2014, 20, No. 30, 9208. Read article.
This comprehensive mechanistic study sheds light on the facility of the initial metalation of branched alkyl aryl sulfones and their subsequent formal ortho→α rearrangement. A kinetic investigation, combined with studies aimed at the determination of deuterium KIEs, and crossover experiments, support an intermolecular mechanism for the transmetalation.
Lucie Rehová, Ullrich Jahn
Eur. J. Org. Chem. 2014, No. 21, 4610. Read article.
A new class of functionalized carbon nanotubes synthesized on the basis of in situ deprotected tosylhydrazones and the formation of cyclopropanated products is reported. A different product is obtained with different types of tosylhydrazones. This new class of functionalized carbon nanotubes is analogues to PC60BM materials and can find future use in plastic solar cells or flexible electronics.
Zois Syrgiannis, Caroline Hadad, Maurizio Prato
Eur. J. Org. Chem. 2014, No. 20, 4225. Read article.
A wisdom mix: The effect of water on the partial oxidation of acrolein on Mo/V/W mixed oxides is studied. The incorporation of oxygen originating from water into acrolein and oxidation products is investigated by performing isotope exchange experiments.
Tina Petzold, Nina Blickhan, Alfons Drochner, Herbert Vogel
ChemCatChem 2014, 6, No. 7, 2053. Read article.
No inhibitions: One-pot cascade chemoenzymatic synthesis of chiral α-trifluoromethylated amines from ketoximes is performed by using catalysts prepared by atomic-layer deposition (ALD) method combined with Candida antarctica lipase B. The obtained amine was treated as an important raw material for total synthesis of an (S)-inhibitor of phenylethanolamine N-methyltransferase (PNMT).
Guilin Cheng, Qi Wu, Zeyu Shang, Xinhua Liang, Xianfu Lin
ChemCatChem 2014, 6, No. 7, 2129. Read article.
No more waste: Supported gold nanoparticles catalyze the coupling of unactivated arenes in O2 without the typical need of iodine oxidants, acids, bases, or additional metal salts in solution to result in a zero-waste synthetic process. This is in contrast to other catalysts that can perform for only a few turnovers and produce large quantities of waste.
Pedro Serna, Avelino Corma
ChemSusChem 2014, 7, No. 8, 2136. Read article.
Hell hath no furan: A simple and effective water extraction method to purify 5-hydroxylmethylfurfural (HMF) obtained from biomass dehydration system is reported. Up to 99 % of the HMF can be recovered and the aqueous solution of HMF can be directly used for further catalytic oxidization reaction to 2,5-furandicarboxylic acid (FDCA) as the sole product. This purification technique allows an integrated process to produce FDCA from fructose via HMF
Guangshun Yi, Siew Ping Teong, Xiukai Li, Yugen Zhang
ChemSusChem 2014, 7, No. 8, 2131. Read article.
Not the usual: Incorporation of unnatural amino acids into proteins in response to quadruplet codons is inefficient, due to competing triplet recognition on the ribosome. Here we demonstrate a dramatic improvement in the suppression efficiency of the UAGA codon, when competing UAG recognition is eliminated by RF1 deletion in a genomically recoded E. coli strain devoid of endogenous UAG codons.
Abhishek Chatterjee, Marc J. Lajoie, Han Xiao, George M. Church, Peter G. Schultz
ChemBioChem 2014, 15, No. 12, 1782. Read article.
The long ranger: Transmission electron microscopy analysis of the material produced by the potentiostatic electropolymerization of a rigid, highly symmetrical, slender precursor with four reactive 3-methoxythiophene end-groups provides evidence for the formation of organized nanostructures.
Ali Yassin, Romain Mallet, Philippe Leriche, Jean Roncali
ChemElectroChem 2014, 1, No. 7, 1219. Read article.
Good cop, good cop: Valorization of lignin in supercritical ethanol using a copper-containing mixed oxide results in high monomer yield (23 wt %) without char formation. Aromatics are the main products and almost half of this monomer fraction is free of oxygen. Ethanol acts as hydrogen-donor solvent as well as capping agent, stabilizing through C- and O-alkylation the highly reactive phenolic intermediates and suppressing repolymerization reactions.
Xiaoming Huang, Tamás I. Korányi, Michael D. Boot, Emiel J. M. Hensen
ChemSusChem 2014, 7, No. 8, 2276. Read article.
Light switches: The combination of a cell-permeable, photocaged ligand and a theophylline riboswitch provided a simple and efficient strategy to control gene expression within bacterial cells by using light. This approach can be used to regulate artificial genetic circuits.
Steven Walsh, Laura Gardner, Alexander Deiters, Gavin J. Williams
ChemBioChem 2014, 15, No. 9, 1346. Read article.
Triple play: A ternary Pd/TiO2@N-C catalyst is developed by supporting palladium nanoparticles onto a composite support of titania (TiO2) and nitrogen-modified porous carbon. The catalyst is able to fully hydrogenate vanillin, using formic acid, available from biomass, as hydrogen source. Its unique catalytic properties for hydrogenation are due to a synergistic effect between two different types of palladium sites in the catalyst: one for formic acid dehydrogenation and on for vanillin hydrogenation.
Liang Wang, Bingsen Zhang, Xiangju Meng, Dang Sheng Su, Feng-Shou Xiao
ChemSusChem 2014, 7, No. 6, 1537. Read article.
Shielded: A nickel–copper alloy is mixed with gadolinium-doped ceria to obtain an anode-supported solid-oxide fuel cell (AS-SOFC) modified with a protective layer coated on the anode (see picture; YSZ = Y0.08Zr0.92O2, YDC = Y0.10Ce0.90O2, LSFCO = La0.6Sr0.4Fe0.8Co0.2O3). A comparative study between the modified cell and a conventional AS-SOFC without the protective layer is performed.
Massimiliano Lo Faro, Rafael M. Reis, Guilherme G. A. Saglietti, Andre G. Sato, Edson A. Ticianelli, Sabrina C. Zignani, Antonio S. Aricò
ChemElectroChem 2014, 1, No. 8, 1395. Read article.
Packed in like herrings: A cyclophane molecule with disilanyl pillars was synthesized by using ternaphthyl as base arylene units to afford a macrocycle possessing interfused packing structures of π-stack and herringbone motifs.
Waka Nakanishi, Naoto Matsuyama, Daisuke Hara, Akinori Saeki, Shunpei Hitosugi, Shu Seki, Hiroyuki Isobe
Chem. Asian J. 2014, 9, No. 7, 1782. Read article.
Ideal for bulky substrates: Catalytic behavior of hierarchical MFI zeolites was investigated in annulation reaction of phenols differing in size with methylbutenol and compared with that of medium and large-pore zeolites MFI and BEA.
Maksym V. Opanasenko, Mariya V. Shamzhy, Changbum Jo, Ryong Ryoo, Jirí Čejka
ChemCatChem 2014, 6, No. 7, 1919. Read article.
Time to wake up! Histamine H3 receptor (H3R) inverse agonism is a well-established paradigm for the treatment of narcolepsy. Unfortunately, all drug candidates so far proved to have a long duration of action, causing insomnia on the following night. The chance discovery of a novel, ergoline-based scaffold opens a new avenue towards derivatives that exhibit potent, but short-acting, inhibition of H3R.
Yves P. Auberson, Thomas Troxler, Xuechun Zhang, Charles R. Yang, Markus Fendt, Dominik Feuerbach, Yu-Chih Liu, Bharat Lagu, Andreas Lerchner, Mark Perrone, Lijun Lei, Chao Zhang, Chunxiu Wang, Tie-Lin Wang, Mark G. Bock
ChemMedChem 2014, 9, No. 8, 1683. Read article.
Magical magnetite: The electrochemical behavior of oleyl-coated Fe3O4 nanoparticles synthesized by chemical co-precipitation is investigated. The modified electrodes exhibit electrochemical behavior in acidic media but not in alkaline media. The results open up new prospects for future mechanistic and analytical studies of magnetite nanoparticles.
Krishnan Murugappan, Debbie S. Silvester, Deeptangshu Chaudhary, Damien W. M. Arrigan
ChemElectroChem 2014, 1, No. 7, 1211. Read article.
Bond activation by intramolecular interactions of alkynyl carbon with highly Lewis acidic aluminium atoms was observed for functionalised alkenyl-alkynylgermanes. Such mixed germanium–aluminum or –gallium compounds were obtained by hydrometallation of dialkynylgermanes and are promising candidates for secondary reactions such as cyclisation or insertion.
Werner Uhl, Stefan Pelties, Martina Rohling, Jens Tannert
Eur. J. Inorg. Chem. 2014, No. 17, 2809. Read article.
SIM-ply the best! A new type of 3d–4f single-ion magnet (SIM) with a diamagnetic cobalt(III) ion as the 3d metal is constructed. The large steric hindrance of the cobalt(III) segments in the SIM minimize the number of intermolecular magnetic interactions, and because of the presence of mononuclear LnIII magnetic systems, the magnetic anisotropy can be easily modified, which results in remarkable anisotropic barriers.
Cai-Ming Liu, De-Qing Zhang, Xiang Hao, Dao-Ben Zhu
Chem. Asian J. 2014, 9, No. 7, 1847. Read article.
The life of π: Pt-based quinoline and benzothiazole complexes were synthesized with an aim to design drugs with higher affinity for π–π stacking and electrostatic interactions with targeted biomolecules. Fluorescence spectroscopy and molecular modeling led to candidate complexes with significant cytotoxicity toward various tumor cell lines.
Erin S. F. Ma, A. Gerard Daniel, Nicholas P. Farrell
ChemMedChem 2014, 9, No. 6, 1155. Read article.
Gold–support synergy: Au nanoparticles supported on Ni–Al layered double hydroxides exhibit high chemoselectivity, recyclability, and reproducibility for the liquid-phase aerobic oxidation of alcohols under base-free or even solvent-free conditions. The synergistic effect between the nanoparticles and the layered double hydroxide support dominates the unique catalytic activity, which is also correlated to the complete ordering of cations in the surface layers.
Jiang Wang, Xianjun Lang, Bao Zhaorigetu, Meilin Jia, Jun Wang, Xiaofang Guo, Jincai Zhao
ChemCatChem 2014, 6, No. 6, 1737. Read article.
More than bricks and mortar: Dibenzo[g,p]chrysenes possessing a variety of substituents were synthesized. Single-crystal X-ray diffraction studies of these compounds revealed that they possess twisted molecular and brickwork packing structures. These structures are useful for their application to carrier transport materials.
Yasuyuki Ueda, Hayato Tsuji, Hideyuki Tanaka, Eiichi Nakamura
Chem. Asian J. 2014, 9, No. 6, 1623. Read article.
Tale of entanglement: An eight-spin-qubit quantum entangled state can be realized in a dinuclear Fe(II) complex which (under a specific set of quantum-logic-gate operations) can act as a source of multi-qubit generation. The large decoherence time with high quantum fidelity factor makes the system an efficient quantum-computing object.
Mausumi Chattopadhyaya, Md. Mehboob Alam, Debasis Sarkar, Swapan Chakrabarti
ChemPhysChem 2014, 15, No. 9, 1747. Read article.
For ethylene/ethane separation by PSA, the adsorption properties of [Cu2(2,3-pyrazinedicarboxylate)2(pyrazine)]n were investigated by both the single and binary gas system, which revealed its ethylene selective nature. Moreover, spectroscopic and computational studies suggested the importance of hydrogen bonds in the selective adsorption of ethylene over ethane.
Keisuke Kishida, Yumiko Watanabe, Satoshi Horike, Yoshihiro Watanabe, Yoshikuni Okumura, Yuh Hijikata, Shigeyoshi Sakaki, Susumu Kitagawa
Eur. J. Inorg. Chem. 2014, No. 17, 2747. Read article.
Two new compounds, one with a 3D/3D hetero-interpenetrating diamondoid framework and the other with a homo-interpenetrating pcu network, are synthesized through a one-pot reaction. Their pure phases are obtained by adjusting the metal/ligands ratio. The magnetic properties of the homo-interpenetrating network are investigated.
Xiang-Guang Guo, Wen-Bin Yang, Xiao-Yuan Wu, Lang Lin, Can-Zhong Lu
Eur. J. Inorg. Chem. 2014, No. 15, 2481. Read article.
You never stop learning about film: Post-treatment of micrometer-thick poly(acrylic acid)/poly(allylamine hydrochloride) films with highly interpenetrated film structures produces macroporous films with closed honeycomb-like pores of several micrometers. These macroporous films can be conveniently released from substrates to produce free-standing films with satisfactory mechanical stability.
Xiaoling Chen, Junqi Sun
Chem. Asian J. 2014, 9, No. 8, 2063. Read article.
Metal with mettle: Catalytic metallodrugs are a new compound class with potential for high therapeutic activity and low toxicity. The Cu-GGHYrFK-amide complex was reported earlier to catalytically inactivate stem loop IIb of the HCV internal ribosomal entry site RNA, and to show significant antiviral activity in a cellular HCV replicon assay. Herein we describe our studies focused on understanding the cleavage mechanism and the relationship of catalyst configuration to structural recognition and site-selective cleavage of the structured RNA motif.
Seth S. Bradford, Martin James Ross, Insiya Fidai, James A. Cowan
ChemMedChem 2014, 9, No. 6, 1275. Read article.
Drugs in motion: Self-propelled Janus mesoporous silica nanomotors with diameters of sub-100 nm are presented. This new active delivery system combines an autonomous nanomotor and a smart cargo into an integrated system and may be helpful in dealing with current nanoparticle drug-delivery system obstacles (see picture).
Mingjun Xuan, Jingxin Shao, Xiankun Lin, Luru Dai, Qiang He
ChemPhysChem 2014, 15, No. 11, 2255. Read article.
Matching sodium olivine and tin: An electrochemically converted NaFePO4 olivine cathode and a nanostructured Sn–C anode are combined in an efficient, sodium-ion battery, characterized by a capacity of 150 mAh g−1, a voltage of 3 V and, consequently, a practical energy density estimated to be of the order of 150 Wh kg−1
Ivana Hasa, Jusef Hassoun, Yang-Kook Sun, Bruno Scrosati
ChemPhysChem 2014, 15, No. 10, 2152. Read article.
Polyoxometalates, like small pieces of metal oxide, can be dissolved or fixed on a surface to perform homogeneous or heterogeneous catalysis, respectively. Here we exploit the alkaline nature of polyoxoniobates to neutralize nerve agents in both solution and the solid state. Solution studies correlate reaction efficacy to the association of the dissolved polyoxoniobate with its counterions.
Mark K. Kinnan, William R. Creasy, Lauren B. Fullmer, Heidi L. Schreuder-Gibson, May Nyman
Eur. J. Inorg. Chem. 2014, No. 14, 2361. Read article.
Pièce de résistance! Multidrug resistance (MDR) is the main obstacle toward effective anticancer therapy. Herein we report the discovery of two small-molecule 14-3-3 protein–protein interaction inhibitors that promote the translocation of c-Abl and FOXO pro-apoptotic factors into the nucleus and sensitize MDR cancer cells to doxorubicin and the pan-Akt inhibitor GSK690693.
Mattia Mori, Giulia Vignaroli, Ylenia Cau, Jelena Dinić, Richard Hill, Matteo Rossi, David Colecchia, Milica Pešić, Wolfgang Link, Mario Chiariello, Christian Ottmann, Maurizio Botta
ChemMedChem 2014, 9, No. 5, 973. Read article.
Great things in small packages: Large-area α-MnO2 nanoflower arrays on flexible substrates are synthesized through a facial template-free electrochemical deposition process. These nanoflower arrays produce an enhanced electrochemical performance in the form of a high specific capacitance with remarkable rate capability and excellent cycling stability.
Wenyao Li, Kaibing Xu, Bo Li, Jianqing Sun, Feiran Jiang, Zhishui Yu, Rujia Zou, Zhigang Chen, Junqing Hu
ChemElectroChem 2014, 1, No. 6, 1003. Read article.
Bent on stability: The nematic liquid-crystal phases formed by bent-core molecules have remarkable properties. This Minireview reports recent progress in stabilizing the nematic phase at accessible temperatures, concentrating on oxadiazole-based materials. It also describes recent measurements of their physical properties, including optical, dielectric, elastic, and flexoelectric coefficients, and electric field effects (see graphic).
Helen F. Gleeson, Sarabjot Kaur, Verena Görtz, Abdel Belaissaoui, Stephen Cowling, John W. Goodby
ChemPhysChem 2014, 15, No. 7, 1251. Read article.
In charge: The influence of the charge relay effects of peptide organic templates on silica mineralization has been investigated. β-Sheet-type peptide shows higher catalytic activity toward the condensation of trimethylsilanol than random-coil peptide (see figure). Silica mineralized on the Val-His-Val-Glu-Val-Ser (VHVEVS) peptide template forms a flat surface, which is affected by the peptide morphology.
Kazuki Murai, Masahiro Higuchi, Tatsuya Kuno, Katsuya Kato
ChemPlusChem 2014, 79, No. 4, 531. Read article.
Transition period: Yb3+/Tm3+-codoped NaYF4 nanocrystals with different phases (cubic α and hexagonal β) and morphologies (nanoparticles, nanorods, nanoplates) can be controllably fabricated by a convenient hydrothermal synthesis technique. Anisotropic polarization emission is obtained in individual NaYF4:Yb,Tm nanorods, which have potential applications as polarized light resources, bio-labels, photodetectors, lasers, and so forth (see picture).
Guoping Dong, Huilin He, Qiwen Pan, Gengxu Chen, Junhua Xie, Zhijun Ma, Mingying Peng
ChemPlusChem 2014, 79, No. 4, 601. Read article.
Dispersion stabilization: Charging and aggregation in aqueous dispersions of positive titanate nanowires can be tuned through the addition of the oppositely charged poly(styrene sulfonate) polyelectrolyte thanks to its strong affinity for the titanate surface. Accordingly, the system is stable at low polyelectrolyte doses, unstable with rapid aggregation of the nanowires near the charge neutralization point, and stable again at high polyelectrolyte coverages, as shown in the picture.
Endre Horváth, Lucie Grebikova, Plinio Maroni, Tamás Szabó, Arnaud Magrez, László Forró, Istvan Szilagyi
ChemPlusChem 2014, 79, No. 4, 592. Read article.
Pucker up: The gas-phase isomerism of cycloserine and its protonated forms was investigated computationally and experimentally by IR multiphoton dissociation spectroscopy. The isomers of cycloserine show pronounced ring puckering, which generates rich conformeric landscapes (see figure). The relative stability of the various isomers responds to a balance between attractive and repulsive interactions among the functional groups of the molecule.
Caterina Fraschetti, Antonello Filippi, Stefano Borocci, Vincent Steinmetz, Maurizio Speranza
ChemPlusChem 2014, 79, No. 4, 584. Read article.
Non-hinge binding: A novel organometallic protein kinase inhibitor scaffold based on a cyclometalated 1,8-phenanthrolin-7(8 H)-one ligand is reported, which binds to the ATP binding site of the protein kinase Pim1 in an unexpected, unusual non-ATP-mimetic fashion without mimicking the hydrogen-bonding interaction of the adenine nucleobase of ATP.
Kathrin Wähler, Katja Kräling, Holger Steuber, Eric Meggers
ChemistryOpen 2013, 2, No. 5-6, 180. Read article.
Trapped within: We report single-crystal characterization of polymorphs of the ammonium carbamate self-derivative salt of prolinamide, and the first crystal structure of prolinamide and of derived products. This study emphasizes the reactivity of carbonated amines in the solid state and opens perspectives for a systematic study of (solid-state) reactions involving these trapped reactive species.
Anaëlle Tilborg, Steve Lanners, Bernadette Norberg, Johan Wouters
ChemistryOpen 2013, 2, No. 5-6, 194. Read article.
Simple and effective: A facile procedure for monitoring chemical reactions and characterizing compounds dissolved in ionic liquids is described using the MS/MS technique. Separation of species of interest was carried out using internal electronic gate available in electrospray mass spectrometers, instead of chromatography and extraction. The separation was carried out as a fast (milliseconds) and sustainable (no extra solvents) procedure.
Levon L. Khemchyan, Elena A. Khokhlova, Marina M. Seitkalieva, Valentine P. Ananikov
ChemistryOpen 2013, 2, No. 5-6, 208. Read article.
Water purification with β-Bi2O3: A straightforward synthetic procedure for the synthesis of β-Bi2O3 nanoparticles that offers the potential for gram-scale production is presented. The β-Bi2O3 nanoparticles show high photocatalytic activity and stability in the degradation of typical organic water pollutants under visible light irradiation. These nanoparticles might be promising materials for use in novel water purification systems.
Maik Schlesinger, Marcus Weber, Steffen Schulze, Michael Hietschold, Michael Mehring
ChemistryOpen 2013, 2, No. 4, 146. Read article.