Papers

With Tag: Physical And Theoretical Chemistry

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Antifreeze proteins: Put on ice

Gavin Armstrong
Nature Chemistry | 2008 | 10.1038/nchem.66

Antifreeze proteins (AFPs) that occur in creatures such as Antarctic fish, moths and snow fleas — and are added to ice cream — are known to inhibit the growth of ice crystals. They work through a non-colligative method, unlike the ethylene-glycol-based...

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Charge transport: Electron hopping in a hairpin

Anne Pichon
Nature Chemistry | 2010 | 10.1038/nchem.619

Charge transport through electron hopping has been observed between ππ stacked perylene derivatives incorporated into DNA hairpin scaffolds.

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A redox hydrogel protects hydrogenase from high-potential deactivation and oxygen damage

Olaf Rüdiger, Wolfgang Schuhmann, Wolfgang Lubitz, Jeevanthi Vivekananthan, Alaa Alsheikh Oughli, Sascha Pöller, Nicolas Plumeré, Rhodri Williams
Nature Chemistry | 2014 | 10.1038/nchem.2022

Hydrogenases are nature's efficient catalysts for both the generation of energy via oxidation of molecular ​hydrogen and the production of ​hydrogen via the reduction of protons. However, their ​O 2 sensitivity and deactivation at high potential limit their...

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Microscopy: Molecules come into focus

Gavin Armstrong
Nature Chemistry | 2009 | 10.1038/nchem.396

Traditionally, chemists have used indirect spectroscopic methods to understand the structure of single molecules; making inferences from techniques such as infrared and NMR spectroscopy. The advent of new microscopy techniques, however, has allowed a more...

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Metabolomics: One cell at a time

Neil Withers
Nature Chemistry | 2008 | 10.1038/nchem.26

Almost all methods used to analyse cells and their metabolites rely on measurements that are averaged over a large population. But even genetically identical cells can vary greatly in molecular content, so techniques that can analyse single cells could...

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Give silver a shine

Katharina M. Fromm
Nature Chemistry | 2011 | 10.1038/nchem.970

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Barium bright and heavy

Katharina M. Fromm
Nature Chemistry | 2013 | 10.1038/nchem.1551

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Colloidal inverse bicontinuous cubic membranes of block copolymers with tunable surface functional groups

Yunju La, Kyoung Taek Kim, Sang Hoon Joo, Tae Joo Shin, Sebyung Kang, Chiyoung Park
Nature Chemistry | 2014 | 10.1038/nchem.1946

Analogous to the complex membranes found in cellular organelles, such as the endoplasmic reticulum, the inverse cubic mesophases of lipids and their colloidal forms (cubosomes) possess internal networks of water channels arranged in crystalline order, which...

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Carbon allotropes: On the road to carbyne

Michael M. Haley
Nature Chemistry | 2010 | 10.1038/nchem.884

Chemists have now prepared the longest known stable subunit of the elusive all-carbon polymer — carbyne. Their results suggest that carbyne itself would have a polyyne-like rather than a cumulene structure.

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Dendrimer chromophores: Stiff and twisted

Neil Withers
Nature Chemistry | 2008 | 10.1038/nchem.98

Organic chromophores, where the difference between two molecular orbitals is in the visible light portion of the electromagnetic spectrum, have useful properties that can be widely tailored. Pyrene (analogous to four fused benzene rings) is an important...

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Mimicking nature with synthetic macromolecules capable of recognition

David A. Fulton, Clare S. Mahon
Nature Chemistry | 2014 | 10.1038/nchem.1994

Nature has, through billions of years of evolution, assembled a multitude of polymeric macromolecules capable of exquisite molecular recognition. This functionality arises from the precise control exerted over their biosynthesis that results in key residues...

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A primary hydrogen–deuterium isotope effect observed at the single-molecule level

Siran Lu, Dvir Rotem, Hagan Bayley, Wen-Wu Li, Ellina Mikhailova
Nature Chemistry | 2010 | 10.1038/nchem.821

The covalent chemistry of reactants tethered within a single protein pore can be monitored by observing the time-dependence of ionic current flow through the pore, which responds to bond making and breaking in individual reactant molecules. Here we use this...

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Supramolecular assembly: A protein gets framed

Russell Johnson
Nature Chemistry | 2012 | 10.1038/nchem.1491

Nature Commun. 3, 1093 (2012) Encapsulating molecules within synthetic cages offers the potential to tailor the surrounding environment for chemical reactions in a manner similar to that used by enzymes. Small molecules have been enclosed inside a variety of...

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Metal|[ndash]|organic frameworks: Cd changer

Neil Withers
Nature Chemistry | 2009 | 10.1038/nchem.176

Framework materials formed from metal ions or clusters linked by organic ligands (metal–organic frameworks, known as MOFs) are quickly developing into a wide field with many useful potential applications. The range of different linkers offers the promises of...

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Crystallographic snapshots of the reaction of aromatic C–H with O2 catalysed by a protein-bound iron complex

Caroline Marchi-Delapierre, Lydie Martin, Christine Cavazza, Constance Bochot, Philippe Carpentier, Mickaël V. Cherrier, Pierre Rousselot-Pailley, Juan C. Fontecilla-Camps, Stéphane Ménage
Nature Chemistry | 2010 | 10.1038/nchem.841

Chemical reactions inside single crystals are quite rare because crystallinity is difficult to retain owing to atomic rearrangements. Protein crystals in general have a high solvent content. This allows for some molecular flexibility, which makes it possible...

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Charged and metallic molecular monolayers through surface-induced aromatic stabilization

N. Koch, A. Strozecka, B. Bröker, A. Wilke, S. Kera, J. Pflaum, B. Detlefs, S. Winkler, G. Schulze, A. Vollmer, C. Bürker, F. Schreiber, J. I. Pascual, I. Salzmann, J. Niederhausen, I. Fernandez-Torrente, K. J. Franke, G. Heimel, J. Frisch, A. Gerlach, N. Ueno, R. Schlesinger, S. Duhm, T. Hosokai
Nature Chemistry | 2013 | 10.1038/nchem.1572

Large π-conjugated molecules, when in contact with a metal surface, usually retain a finite electronic gap and, in this sense, stay semiconducting. In some cases, however, the metallic character of the underlying substrate is seen to extend onto the first...

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Probing the biophysical interplay between a viral genome and its capsid

W. H. Roos, J. Snijder, G. A. Marti, D. M. A. Guérin, G. J. L. Wuite, R. J. Rose, A. J. R. Heck, J. Agirre, R. Sanchez-Eugenia, C. Uetrecht
Nature Chemistry | 2013 | 10.1038/nchem.1627

The interaction between a viral capsid and its genome governs crucial steps in the life cycle of a virus, such as assembly and genome uncoating. Tuning cargo–capsid interactions is also essential for successful design and cargo delivery in engineered viral...

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2D materials: Porous graphene

Stephen Davey
Nature Chemistry | 2009 | 10.1038/nchem.415

The unusual electronic properties of graphene have generated great interest in research into other two-dimensional materials. Furthermore, introducing pores with controlled size and distribution could be a way of tuning these electronic properties.

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Ion mobility–mass spectrometry reveals a conformational conversion from random assembly to β-sheet in amyloid fibril formation

Michael T. Bowers, Christian Bleiholder, Thomas Wyttenbach, Nicholas F. Dupuis
Nature Chemistry | 2011 | 10.1038/nchem.945

Amyloid cascades that lead to peptide β-sheet fibrils and plaques are central to many important diseases. Recently, intermediate assemblies of these cascades were identified as the toxic agents that interact with cellular machinery. The location and cause of...

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Systems chemistry: Dynamic determination

Stephen Davey
Nature Chemistry | 2009 | 10.1038/nchem.279

Systems chemistry aims to understand how chemicals behave and interact in complex mixtures rather than in isolation. The determination of a large number of equilibrium constants in such systems relies on the quantification of a large number of products.

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