19.06.2013 | Sarah Louise Perry; Sudipto Guha; Ashtamurthy Pawate; Amrit Bhaskarla; Vinayak Agarwal; Satish Nair; Paul Kenis, Lab on a Chip, 2013

We report a microfluidic approach for de novo protein structure determination via crystallization screening and optimization, as well as on-chip X-ray diffraction data collection. The structure of phosphonoacetate hydrolase (PhnA) has been solved to 2.11Å via on-chip collection of anomalous ...

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19.06.2013 | Lavinia Balan; Camelia Matei Ghimbeu; Loïc Vidal; Cathie Vix-Guterl, Green Chemistry, 2013

A green chemistry approach was successfully used in this work to synthesize manganese oxide nanoparticles with different shapes and crystalline phases. This approach is based on the visible light irradiation (445 nm) at room temperature of an aqueous solution of a manganese(ii) salt in the ...

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19.06.2013 | Xingyuan Guo; Weiye Song; Changfeng Chen; Weihua Di; Weiping Qin, Physical Chemistry Chemical Physics, 2013

A novel near-infrared (NIR)-responsive photocatalyst, β-NaYF4:Yb3+,Tm3+@ZnO composites, was prepared by a two-step high temperature thermolysis method. In the NIR-responsive photocatalysis, β-NaYF4: Yb, Tm served as NIR-to-UV upconverter and provided “UV light” or “necessary energy” to ZnO ...

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19.06.2013 | Artem Smolentsev; Evgeni Glebov; Valeri Korolev; Sergey Paramonov; Olga Fedorova, Photochemical & Photobiological Sciences, 2013

Fluorescent properties of recently synthesized photochromic naphthopyran containing 1-aza-15-crown-5 moiety (2b) and its crownless analogue (2a) were studied. 2b emits fluorescence with a maximum at 528 nm, quantum yield 0.1 and characteristic lifetime 2.4 ns (in acetonitrile at room ...

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19.06.2013 | Filippo Giordanino; Peter N. R. Vennestrøm; Lars Fahl Lundegaard; Frederick N. Stappen; Susanne L. Mossin; Pablo Bea ..., Dalton Transactions, 2013

Cu-SSZ-13 has been characterized by different spectroscopic techniques and compared with Cu-ZSM-5 and Cu-β with similar Si/Al and Cu/Al ratios and prepared by the same ion exchange procedure. On vacuum activated samples, low temperature FTIR spectroscopy allowed us to appreciate a high ...

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19.06.2013 | Gan Zhang; José Manuel Delgado-López; Duane Choquesillo-Lazarte; Juan Manuel Garcia-Ruiz, CrystEngComm, 2013

Monohydrocalcite was crystallized in silica-rich alkaline solutions at room temperature using the counter diffusion method (CDM) in the absence of magnesium, by the reaction of calcium chloride and sodium carbonate. Field-emission scanning microscopy observations showed monohydrocalcite ...

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19.06.2013 | Magdalena Gruziel; Wojciech Dzwolak; Piotr Szymczak, Soft Matter, 2013

The formation of aggregates of helical fibrils is analyzed numerically. The aggregate morphology, chirality and stability are studied as a function of temperature and helical pitch of individual fibrils. The simulations show the existence of a critical pitch above which the handedness of the ...

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19.06.2013 | Anant Paradkar; Chaitrali Kulkarni; John Kendrick; Adrian Kelly; Tim Gough; Radha Charan Dash, CrystEngComm, 2013

This communication reports a novel solvent free technology to generate and stabilise the triclinic form of artemisinin. We show that the stability of the triclinic form obtained by high temperature extrusion is greater than that of material made using a solvent based technique.

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19.06.2013 | Tanmay P Dhavale; Shweta Jatav; Yogesh Moreshwar Joshi, Soft Matter, 2013

In this work we study structural recovery of a soft glassy Laponite suspension by monitoring temporal evolution of elastic modulus under isothermal conditions as well as following step temperature jumps. Interestingly, evolution behavior under isothermal conditions indicates the rate, and not ...

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19.06.2013 | Jia-Qi Li; Pher G. Andersson, Chemical Communication, 2013

A bidentate iridium NHC–phosphine complex has been developed and applied to the N-monoalkylation of aromatic amines with a wide range of primary alcohols and to the N-heterocyclization of amino alcohols. This reaction resulted in high isolated product yields, even at room temperature and ...

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