Angewandte Chemie International Edition

Cover image for Vol. 54 Issue 21

Editor: Peter Gölitz, Deputy Editors: Neville Compton, Haymo Ross

Online ISSN: 1521-3773

Associated Title(s): Angewandte Chemie, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemistryOpen, ChemPlusChem, Zeitschrift für Chemie

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May 20, 2015

Angewandte Chemie 22/2015: Graphene Power

Angewandte Chemie 22/2015: Graphene PowerIn this issue, D. W. Stephan and G. Erker review the chemistry of frustrated Lewis pairs. How can they be used to activate small molecules or even to develop new reactions? The Highlight deals with electrochemical C–H amination (S. R. Waldvogel and S. Möhle).

In the Communications section, M. N. Tran and D. M. Chenoweth present photoelectrocyclization as an activation mechanism for live-cell imaging probes (see picture). T. W. Muir et al. provide insights into the spatial regulation of a methyltransferase by using a chromatin surrogate. S. P. Cooper and D. I. Booker-Milburn introduce a palladium(II)-catalyzed C–H activation cascade sequence for polyheterocycle formation, and Z. Zhou et al. succeeded in the introduction of graphene into rechargeable Li-CO2 batteries.

Browse issue 22/2015 now.

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May 16, 2015

Hot Paper: One-Step Formation of “Chain-Armor”-Stabilized DNA Nanostructures

Valentina Cassinelli, Dr. Birgit Oberleitner, Jessica Sobotta, Philipp Nickels, Guido Grossi, Dr. Susanne Kempter, Dr. Thomas Frischmuth, Prof. Tim Liedl and Dr. Antonio Manetto

One-Step Formation of “Chain-Armor”-Stabilized DNA NanostructuresInterlocked catenane rings consisting of 24 single-stranded DNA molecules (“chain-armor DNA”) were built from six helix tubes containing 3′-alkyne- and 5′-azide-modified single-stranded tiles (SST) that were covalently closed by click chemistry. Intramolecular cyclization stabilized these DNA nanotubes efficiently against enzymatic and thermal degradation.

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May 16, 2015

Hot Paper: Rhodium(I)-Catalyzed Sequential C(sp)[BOND]C(sp3) and C(sp3)[BOND]C(sp3) Bond Formation through Migratory Carbene Insertion

Ying Xia, Sheng Feng, Zhen Liu, Dr. Yan Zhang and Prof. Dr. Jianbo Wang

Rhodium(I)-Catalyzed Sequential C(sp)<img src="http://onlinelibrarystatic.wiley.com/undisplayable_characters/00f8ff.gif" alt="[BOND]" />C(sp3) and C(sp3)<img src="http://onlinelibrarystatic.wiley.com/undisplayable_characters/00f8ff.gif" alt="[BOND]" />C(sp3) Bond Formation through Migratory Carbene InsertionAll on C: A sequential RhI-catalyzed alkyl and alkynyl coupling on a carbene successively establishes a C(sp)[BOND]C(sp3) and then a C(sp3)[BOND]C(sp3) bond on the original carbenic carbon center. The reaction results in the formation of an all-carbon quaternary center in high efficiency. A rhodium–carbene migratory insertion is proposed as the key step in this transformation.

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May 13, 2015

Hot Paper: The First Introduction of Graphene to Rechargeable Li–CO2 Batteries

Zhang Zhang, Qiang Zhang, Yanan Chen, Jie Bao, Xianlong Zhou, Zhaojun Xie, Jinping Wei and Prof. Zhen Zhou

The First Introduction of Graphene to Rechargeable Li–CO2 BatteriesA different cathode: The introduction of graphene as a cathode material to Li–CO2 batteries significantly improves their performance. The resulting batteries feature a superior discharge capacity and enhanced cycle stability. A novel approach for simultaneously capturing CO2 and storing energy has thus been developed.

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May 13, 2015

Hot Paper: From Chemical Gardens to Fuel Cells: Generation of Electrical Potential and Current Across Self-Assembling Iron Mineral Membranes

Dr. Laura M. Barge, Yeghegis Abedian, Dr. Michael J. Russell, Ivria J. Doloboff, Dr. Julyan H. E. Cartwright, Dr. Richard D. Kidd and Dr. Isik Kanik

From Chemical Gardens to Fuel Cells: Generation of Electrical Potential and Current Across Self-Assembling Iron Mineral MembranesChemical gardens: Self-assembling membranes in iron sulfide and iron hydroxide reaction systems were studied. The electrical potential and current generated by precipitation of the inorganic membranes were measured. The battery-like properties of the chemical gardens were demonstrated by linking multiple experiments in series which produced sufficient electrical power to light an external light-emitting diode.

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May 13, 2015

Hot Paper: The Mechanism of Ligand-Induced Activation or Inhibition of μ- and κ-Opioid Receptors

Dr. Shuguang Yuan, Prof. Krzysztof Palczewski, Dr. Qian Peng, Dr. Michal Kolinski, Prof. Horst Vogel and Prof. Slawomir Filipek

The Mechanism of Ligand-Induced Activation or Inhibition of μ- and κ-Opioid Receptors One rule to link them all: The same ligand can act as an agonist for the κ-opioid receptor (κOR) and as an antagonist for the μ-opioid receptor (μOR). Long-time-scale MD simulations reveal that antagonist binding diminishes the solvent-accessible surface area (SASA) of the binding pocket, which consequently blocks the entrance of water into the receptor, whereas agonist binding leads to comparatively larger SASA values.

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May 13, 2015

VIP: Pseudohalide-Induced Moisture Tolerance in Perovskite CH3NH3Pb(SCN)2I Thin Films

Qinglong Jiang, Dominic Rebollar, Jue Gong, Elettra L. Piacentino, Prof. Chong Zheng and Prof. Tao Xu

Pseudohalide-Induced Moisture Tolerance in Perovskite CH3NH3Pb(SCN)2I Thin FilmsThe replacement of two iodides by two pseudohalide thiocyanate ions in CH3NH3PbI3 results in a perovskite material with superior tolerance to moisture when used as the active material of a solar cell. For the CH3NH3Pb(SCN)2I perovskite films, no significant degradation was observed after the film had been exposed to air with a relative humidity of 95 % for over four hours, whereas the CH3NH3PbI3 films degraded in less than 1.5 hours.

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May 09, 2015

Hot Paper: Dynamic Inclusion Complexes of Metal Nanoparticles Inside Nanocups

Mariana Alarcón-Correa, Dr. Tung-Chun Lee and Prof. Dr. Peer Fischer

Dynamic Inclusion Complexes of Metal Nanoparticles Inside NanocupsNanocup with nanoparticle: Dynamic 1:1 host–guest inclusion complexes of metal nanoparticles inside oxide nanocups are fabricated by means of a reactive double Janus nanoparticle intermediate in a kinetically controlled process. Release of the nanoparticle guests from the nanocups can be efficiently triggered by an external stimulus.

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May 09, 2015

VIP: Photoinduced Charge-Carrier Generation in Epitaxial MOF Thin Films: High Efficiency as a Result of an Indirect Electronic Band Gap?

Dr. Jinxuan Liu, Wencai Zhou, Jianxi Liu, Dr. Ian Howard, Dr. Goran Kilibarda, Dr. Sabine Schlabach, Damien Coupry, Dr. Matthew Addicoat, Satoru Yoneda, Yusuke Tsutsui, Dr. Tsuneaki Sakurai, Prof. Dr. Shu Seki, Dr. Zhengbang Wang, Peter Lindemann, Dr. Engelbert Redel, Prof. Thomas Heine and Prof. Dr. Christof Wöll

Photoinduced Charge-Carrier Generation in Epitaxial MOF Thin Films: High Efficiency as a Result of an Indirect Electronic Band Gap?Mind the gap: electronic-structure calculations show that ordered arrays of porphyrins have a small dispersion of occupied and unoccupied bands leading to the formation of a small indirect band gap. Such ordered structures are formed by liquid-phase epitaxy (see picture) and exhibit superior photophysical properties. A prototype organic photovoltaic device based on this material is highly efficient.

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May 09, 2015

VIP: Orthogonal Light-Induced Self-Assembly of Nanoparticles using Differently Substituted Azobenzenes

Dr. Debasish Manna, Dr. Thumu Udayabhaskararao, Dr. Hui Zhao and Dr. Rafal Klajn

Orthogonal Light-Induced Self-Assembly of Nanoparticles using Differently Substituted AzobenzenesA guiding light: Nanoparticles functionalized with variously substituted azobenzenes self-assemble into aggregates in response to different wavelengths of light. Exposing a mixture of differently sized nanoparticles, each functionalized with a different azobenzene, to light of a specific color (ultraviolet or blue) induces the selective self-assembly of only one type of the nanoparticles. Irradiation with the other wavelength triggers the disassembly of the aggregates, and the simultaneous self-assembly of nanoparticles of the other type.

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May 07, 2015

Hot Paper: Inhibition of Ras Signaling by Blocking Ras–Effector Interactions with Cyclic Peptides

Dr. Punit Upadhyaya, Dr. Ziqing Qian, Dr. Nicholas G. Selner, Sarah R. Clippinger, Prof. Dr. Zhengrong Wu, Dr. Roger Briesewitz and Prof. Dr. Dehua Pei

Inhibition of Ras Signaling by Blocking Ras–Effector Interactions with Cyclic PeptidesRound, round, get around: Cell-permeable cyclic peptides were developed that act as direct Ras inhibitors by blocking Ras–effector protein interactions. These peptides, named cyclorasins, cause growth inhibition and apoptosis in cancer cells.

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May 07, 2015

Hot Paper: Photoelectrocyclization as an Activation Mechanism for Organelle-Specific Live-Cell Imaging Probes

Mai N. Tran and Prof. David M. Chenoweth

Photoelectrocyclization as an Activation Mechanism for Organelle-Specific Live-Cell Imaging ProbesA photoactivatable organelle-specific live-cell imaging probe based on a 6π electrocyclization/oxidation mechanism is described. This probe is water-soluble, non-cytotoxic, cell-permeable, and can be used for mitochondrial imaging.

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May 20, 2015
Angewandte Chemie 22/2015: Graphene Power

May 16, 2015
Hot Paper: One-Step Formation of “Chain-Armor”-Stabilized DNA Nanostructures

May 16, 2015
Hot Paper: Rhodium(I)-Catalyzed Sequential C(sp)[BOND]C(sp3) and C(sp3)[BOND]C(sp3) Bond Formation through Migratory Carbene Insertion

May 13, 2015
Hot Paper: The First Introduction of Graphene to Rechargeable Li–CO2 Batteries

May 13, 2015
Hot Paper: From Chemical Gardens to Fuel Cells: Generation of Electrical Potential and Current Across Self-Assembling Iron Mineral Membranes

May 13, 2015
Hot Paper: The Mechanism of Ligand-Induced Activation or Inhibition of μ- and κ-Opioid Receptors

May 13, 2015
VIP: Pseudohalide-Induced Moisture Tolerance in Perovskite CH3NH3Pb(SCN)2I Thin Films

May 09, 2015
Hot Paper: Dynamic Inclusion Complexes of Metal Nanoparticles Inside Nanocups

May 09, 2015
VIP: Photoinduced Charge-Carrier Generation in Epitaxial MOF Thin Films: High Efficiency as a Result of an Indirect Electronic Band Gap?

May 09, 2015
VIP: Orthogonal Light-Induced Self-Assembly of Nanoparticles using Differently Substituted Azobenzenes

May 07, 2015
Hot Paper: Inhibition of Ras Signaling by Blocking Ras–Effector Interactions with Cyclic Peptides

May 07, 2015
Hot Paper: Photoelectrocyclization as an Activation Mechanism for Organelle-Specific Live-Cell Imaging Probes

May 07, 2015
Hot Paper: Ultrathin Spinel-Structured Nanosheets Rich in Oxygen Deficiencies for Enhanced Electrocatalytic Water Oxidation

May 07, 2015
VIP: Textile/Metal–Organic-Framework Composites as Self-Detoxifying Filters for Chemical-Warfare Agents

May 07, 2015
VIP: A Molecular Nanotube with Three-Dimensional π-Conjugation

May 06, 2015
Angewandte Chemie 20/2015: Stable Bonds

May 05, 2015
Hot Paper: A Crystalline Mesoporous Germanate with 48-Ring Channels for CO2 Separation

May 05, 2015
Hot Paper: Single Benzene Green Fluorophore: Solid-State Emissive, Water-Soluble, and Solvent- and pH-Independent Fluorescence with Large Stokes Shifts

May 05, 2015
Hot Paper: Electrokinetic Size and Mobility Traps for On-site Therapeutic Drug Monitoring

April 30, 2015
Hot Paper: Heterostructure of Si and CoSe2: A Promising Photocathode Based on a Non-noble Metal Catalyst for Photoelectrochemical Hydrogen Evolution

April 30, 2015
Hot Paper: Epitope Targeting of Tertiary Protein Structure Enables Target-Guided Synthesis of a Potent In-Cell Inhibitor of Botulinum Neurotoxin

April 30, 2015
Hot Paper: polyMOFs: A Class of Interconvertible Polymer-Metal-Organic-Framework Hybrid Materials

April 30, 2015
Hot Paper: Posttranslational Modifications of Intact Proteins Detected by NMR Spectroscopy: Application to Glycosylation

April 30, 2015
Hot Paper: Magnetic Assembly and Field-Tuning of Ellipsoidal-Nanoparticle-Based Colloidal Photonic Crystals

April 30, 2015
Hot Paper: Photochemical Synthesis of Ultrafine Cubic Boron Nitride Nanoparticles under Ambient Conditions

April 30, 2015
Hot Paper: A Small Molecule Walks Along a Surface Between Porphyrin Fences That Are Assembled In Situ

April 30, 2015
Hot Paper: Self-Assembly of Disorazole C1 through a One-Pot Alkyne Metathesis Homodimerization Strategy

April 30, 2015
VIP: How the [NiFe4S4] Cluster of CO Dehydrogenase Activates CO2 and NCO

April 30, 2015
VIP: Ring Tension Applied to Thiol-Mediated Cellular Uptake

April 28, 2015
Hot Paper: Organic Light-Emitting Diodes Using a Neutral π Radical as Emitter: The Emission from a Doublet

April 28, 2015
Hot Paper: Electrostatic Assembly/Disassembly of Nanoscaled Colloidosomes for Light-Triggered Cargo Release

April 28, 2015
VIP: Oxygen Reduction Mediated by Single Nanodroplets Containing Attomoles of Vitamin B12: Electrocatalytic Nano-Impacts Method

April 27, 2015
Hot Paper: Potential-Dependent Adlayer Structure and Dynamics at the Ionic Liquid/Au(111) Interface: A Molecular-Scale In Situ Video-STM Study

April 27, 2015
Hot Paper: Cobalt-Catalyzed Hydrogenation of Esters to Alcohols: Unexpected Reactivity Trend Indicates Ester Enolate Intermediacy

April 24, 2015
Hot Paper: Targeted Detection of G-Quadruplexes in Cellular RNAs

April 24, 2015
Hot Paper: Micromotor-Based Energy Generation

April 24, 2015
VIP: One-Step Synthesis of [16]Helicene

April 24, 2015
VIP: A Planarized Triphenylborane Mesogen: Discotic Liquid Crystals with Ambipolar Charge-Carrier Transport Properties

April 21, 2015
Hot Paper: Polyoxometalate Complexes of Anatase-Titanium Dioxide Cores in Water

April 18, 2015
VIP: High-Fidelity Noncovalent Synthesis of Hydrogen-Bonded Macrocyclic Assemblies

April 17, 2015
VIP: Responsive Inverse Opal Hydrogels for the Sensing of Macromolecules

April 16, 2015
Hot Paper: Controllable Scission and Seamless Stitching of Metal–Organic Clusters by STM Manipulation

April 15, 2015
VIP: Induction of Immunogenic Cell Death by Chemotherapeutic Platinum Complexes

April 13, 2015
Hot Paper: C[BOND]H Alkenylations with Alkenyl Acetates, Phosphates, Carbonates, and Carbamates by Cobalt Catalysis at 23 °C

April 13, 2015
Hot Paper: LP99: Discovery and Synthesis of the First Selective BRD7/9 Bromodomain Inhibitor

April 13, 2015
Hot Paper: 2D Zeolite Coatings: Langmuir–Schaefer Deposition of 3 nm Thick MFI Zeolite Nanosheets

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