@article{7289,
  abstract     = {Aprotic sodium–O2 batteries require the reversible formation/dissolution of sodium superoxide (NaO2) on cycling. Poor cycle life has been associated with parasitic chemistry caused by the reactivity of electrolyte and electrode with NaO2, a strong nucleophile and base. Its reactivity can, however, not consistently explain the side reactions and irreversibility. Herein we show that singlet oxygen (1O2) forms at all stages of cycling and that it is a main driver for parasitic chemistry. It was detected in‐ and ex‐situ via a 1O2 trap that selectively and rapidly forms a stable adduct with 1O2. The 1O2 formation mechanism involves proton‐mediated superoxide disproportionation on discharge, rest, and charge below ca. 3.3 V, and direct electrochemical 1O2 evolution above ca. 3.3 V. Trace water, which is needed for high capacities also drives parasitic chemistry. Controlling the highly reactive singlet oxygen is thus crucial for achieving highly reversible cell operation.},
  author       = {Schafzahl, Lukas and Mahne, Nika and Schafzahl, Bettina and Wilkening, Martin and Slugovc, Christian and Borisov, Sergey M. and Freunberger, Stefan Alexander},
  issn         = {1433-7851},
  journal      = {Angewandte Chemie International Edition},
  number       = {49},
  pages        = {15728--15732},
  publisher    = {Wiley},
  title        = {{Singlet oxygen during cycling of the aprotic sodium-O2 battery}},
  doi          = {10.1002/anie.201709351},
  volume       = {56},
  year         = {2017},
}

@article{13393,
  abstract     = {Precise control of the self-assembly of selected components within complex mixtures is a challenging goal whose realization is important for fabricating novel nanomaterials. Herein we show that by decorating the surfaces of metallic nanoparticles with differently substituted azobenzenes, it is possible to modulate the wavelength of light at which the self-assembly of these nanoparticles is induced. Exposing a mixture of two types of nanoparticles, each functionalized with a different azobenzene, to UV or blue light induces the selective self-assembly of only one type of nanoparticles. Irradiation with the other wavelength triggers the disassembly of the aggregates, and the simultaneous self-assembly of nanoparticles of the other type. By placing both types of azobenzenes on the same nanoparticles, we created unique materials (“frustrated” nanoparticles) whose self-assembly is induced irrespective of the wavelength of the incident light.},
  author       = {Manna, Debasish and Udayabhaskararao, Thumu and Zhao, Hui and Klajn, Rafal},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  keywords     = {General Chemistry, Catalysis},
  number       = {42},
  pages        = {12394--12397},
  publisher    = {Wiley},
  title        = {{Orthogonal light-induced self-assembly of nanoparticles using differently substituted azobenzenes}},
  doi          = {10.1002/anie.201502419},
  volume       = {54},
  year         = {2015},
}

@article{8460,
  abstract     = {The function of proteins depends on their ability to sample a variety of states differing in structure and free energy. Deciphering how the various thermally accessible conformations are connected, and understanding their structures and relative energies is crucial in rationalizing protein function. Many biomolecular reactions take place within microseconds to milliseconds, and this timescale is therefore of central functional importance. Here we show that R1ρ relaxation dispersion experiments in magic‐angle‐spinning solid‐state NMR spectroscopy make it possible to investigate the thermodynamics and kinetics of such exchange process, and gain insight into structural features of short‐lived states.},
  author       = {Ma, Peixiang and Haller, Jens D. and Zajakala, Jérémy and Macek, Pavel and Sivertsen, Astrid C. and Willbold, Dieter and Boisbouvier, Jérôme and Schanda, Paul},
  issn         = {1433-7851},
  journal      = {Angewandte Chemie International Edition},
  number       = {17},
  pages        = {4312--4317},
  publisher    = {Wiley},
  title        = {{Probing transient conformational states of proteins by solid-state R1ρ relaxation-dispersion NMR spectroscopy}},
  doi          = {10.1002/anie.201311275},
  volume       = {53},
  year         = {2014},
}

@article{14301,
  abstract     = {DNA has become a prime material for assembling complex three-dimensional objects that promise utility in various areas of application. However, achieving user-defined goals with DNA objects has been hampered by the difficulty to prepare them at arbitrary concentrations and in user-defined solution conditions. Here, we describe a method that solves this problem. The method is based on poly(ethylene glycol)-induced depletion of species with high molecular weight. We demonstrate that our method is applicable to a wide spectrum of DNA shapes and that it achieves excellent recovery yields of target objects up to 97 %, while providing efficient separation from non-integrated DNA strands. DNA objects may be prepared at concentrations up to the limit of solubility, including the possibility for bringing DNA objects into a solid phase. Due to the fidelity and simplicity of our method we anticipate that it will help to catalyze the development of new types of applications that use self-assembled DNA objects.},
  author       = {Stahl, Evi and Martin, Thomas and Praetorius, Florian M and Dietz, Hendrik},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  number       = {47},
  pages        = {12949--12954},
  publisher    = {Wiley},
  title        = {{Facile and scalable preparation of pure and dense DNA origami solutions}},
  doi          = {10.1002/ange.201405991},
  volume       = {126},
  year         = {2014},
}

@article{11959,
  abstract     = {No catalyst required! A highly efficient, catalyst-free process to generate diimide in situ from hydrazine monohydrate and molecular oxygen for the selective reduction of alkenes has been developed. The use of a gas–liquid segmented flow system allowed safe operating conditions and dramatically enhanced this atom-economical reaction, resulting in short processing times.},
  author       = {Pieber, Bartholomäus and Martinez, Sabrina Teixeira and Cantillo, David and Kappe, C. Oliver},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  number       = {39},
  pages        = {10241--10244},
  publisher    = {Wiley},
  title        = {{In situ generation of diimide from hydrazine and oxygen: Continuous-flow transfer hydrogenation of olefins}},
  doi          = {10.1002/anie.201303528},
  volume       = {52},
  year         = {2013},
}

@article{11960,
  abstract     = {It's not magic! The effects observed in microwave-irradiated chemical transformations can in most cases be rationalized by purely bulk thermal phenomena associated with rapid heating to elevated temperatures. As discussed in this Essay, the existence of so-called nonthermal or specific microwave effects is highly doubtful.},
  author       = {Kappe, C. Oliver and Pieber, Bartholomäus and Dallinger, Doris},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  number       = {4},
  pages        = {1088--1094},
  publisher    = {Wiley},
  title        = {{Microwave effects in organic synthesis: Myth or reality?}},
  doi          = {10.1002/anie.201204103},
  volume       = {52},
  year         = {2013},
}

@article{7309,
  abstract     = {Energy‐storage technologies, including electrical double‐layer capacitors and rechargeable batteries, have attracted significant attention for applications in portable electronic devices, electric vehicles, bulk electricity storage at power stations, and “load leveling” of renewable sources, such as solar energy and wind power. Transforming lithium batteries and electric double‐layer capacitors requires a step change in the science underpinning these devices, including the discovery of new materials, new electrochemistry, and an increased understanding of the processes on which the devices depend. The Review will consider some of the current scientific issues underpinning lithium batteries and electric double‐layer capacitors.},
  author       = {Choi, Nam-Soon and Chen, Zonghai and Freunberger, Stefan Alexander and Ji, Xiulei and Sun, Yang-Kook and Amine, Khalil and Yushin, Gleb and Nazar, Linda F. and Cho, Jaephil and Bruce, Peter G.},
  issn         = {1433-7851},
  journal      = {Angewandte Chemie International Edition},
  number       = {40},
  pages        = {9994--10024},
  publisher    = {Wiley},
  title        = {{Challenges facing Lithium batteries and electrical double-layer capacitors}},
  doi          = {10.1002/anie.201201429},
  volume       = {51},
  year         = {2012},
}

@article{8464,
  abstract     = {Nonsymmetric motion: Solid‐state NMR measurements of dipolar coupling tensors provide insight into protein dynamics. The hitherto ignored asymmetry of the dipolar coupling tensor contains valuable information about motional asymmetry, which was used in the first direct site‐resolved measurement of such tensors. Important motions such as rotamer jumps can now be directly detected in the solid state.},
  author       = {Schanda, Paul and Huber, Matthias and Boisbouvier, Jérôme and Meier, Beat H. and Ernst, Matthias},
  issn         = {1433-7851},
  journal      = {Angewandte Chemie International Edition},
  number       = {46},
  pages        = {11005--11009},
  publisher    = {Wiley},
  title        = {{Solid-state NMR measurements of asymmetric dipolar couplings provide insight into protein side-chain motion}},
  doi          = {10.1002/anie.201103944},
  volume       = {50},
  year         = {2011},
}

@article{7314,
  abstract     = {The electrolyte is one of the greatest challenges facing the development of the non‐aqueous Li–O2 battery. Although ether‐based electrolytes do from Li2O2 on the first discharge, it is shown by various techniques that they also decompose and that decomposition increases while Li2O2 decreases on cycling (see picture). Thus, these electrolytes are not suitable. },
  author       = {Freunberger, Stefan Alexander and Chen, Yuhui and Drewett, Nicholas E. and Hardwick, Laurence J. and Bardé, Fanny and Bruce, Peter G.},
  issn         = {1433-7851},
  journal      = {Angewandte Chemie International Edition},
  number       = {37},
  pages        = {8609--8613},
  publisher    = {Wiley},
  title        = {{The Lithium-Oxygen battery with ether-based electrolytes}},
  doi          = {10.1002/anie.201102357},
  volume       = {50},
  year         = {2011},
}

@article{7315,
  abstract     = {Spectroscopic data (see picture) provide direct evidence that in non‐aqueous Li+ electrolyte, O2 is reduced to O2−, which then forms LiO2 on the electrode surface which disproportionates to Li2O2. On charging, Li2O2 decomposes directly, in a one‐step reaction to evolve O2 and does not pass through LiO2 as an intermediate. },
  author       = {Peng, Zhangquan and Freunberger, Stefan Alexander and Hardwick, Laurence J. and Chen, Yuhui and Giordani, Vincent and Bardé, Fanny and Novák, Petr and Graham, Duncan and Tarascon, Jean-Marie and Bruce, Peter G.},
  issn         = {1433-7851},
  journal      = {Angewandte Chemie International Edition},
  number       = {28},
  pages        = {6351--6355},
  publisher    = {Wiley},
  title        = {{Oxygen reactions in a non-aqueous Li+ electrolyte}},
  doi          = {10.1002/anie.201100879},
  volume       = {50},
  year         = {2011},
}

@article{8474,
  abstract     = {Hydrogen bonds are ubiquitous interactions in proteins, and are important for their folding and functionality. Scalar coupling constants across hydrogen bonds in the protein backbone, some as small as 0.5 Hz, can be directly measured in the solid state by NMR spectroscopy (see figure). The nuclei on both sides of the hydrogen bond can be identified and the size of the coupling constant can be measured accurately.},
  author       = {Schanda, Paul and Huber, Matthias and Verel, René and Ernst, Matthias and Meier, Beat H.},
  issn         = {1433-7851},
  journal      = {Angewandte Chemie International Edition},
  keywords     = {General Chemistry, Catalysis},
  number       = {49},
  pages        = {9322--9325},
  publisher    = {Wiley},
  title        = {{Direct detection of 3hJN' hydrogen-bond scalar couplings in proteins by solid-state NMR spectroscopy}},
  doi          = {10.1002/anie.200904411},
  volume       = {48},
  year         = {2009},
}

@article{13417,
  abstract     = {Mission Impossible: Metal nanoparticles (NPs) coated with photoresponsive ligands are used as “inks” for self-erasing “paper” whereby light-induced self-assembly of the NPs is transduced into local color changes (see picture). Depending on the degree of self-assembly, multicolor images can be written using only one type of NP ink. Duration of image erasure is regulated by the surface concentration of photoactive groups and can range from seconds to days.},
  author       = {Klajn, Rafal and Wesson, Paul J. and Bishop, Kyle J. M. and Grzybowski, Bartosz A.},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  keywords     = {General Chemistry, Catalysis},
  number       = {38},
  pages        = {7035--7039},
  publisher    = {Wiley},
  title        = {{Writing self-erasing images using metastable nanoparticle “inks”}},
  doi          = {10.1002/anie.200901119},
  volume       = {48},
  year         = {2009},
}

@article{13421,
  abstract     = {Side-chain poly[2]catenanes at the click of a switch! A bistable side-chain poly[2]catenane has been synthesized and found to form hierarchical self-assembled hollow superstructures of nanoscale dimensions in solution. Molecular electromechanical switching (see picture) of the material is demonstrated, and the ground-state equilibrium thermodynamics and switching kinetics are examined as the initial steps towards processible molecular-based electronic devices and nanoelectromechanical systems.},
  author       = {Olson, Mark A. and Braunschweig, Adam B. and Fang, Lei and Ikeda, Taichi and Klajn, Rafal and Trabolsi, Ali and Wesson, Paul J. and Benítez, Diego and Mirkin, Chad A. and Grzybowski, Bartosz A. and Stoddart, J. Fraser},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  keywords     = {General Chemistry, Catalysis},
  number       = {10},
  pages        = {1792--1797},
  publisher    = {Wiley},
  title        = {{A bistable poly[2]catenane forms nanosuperstructures}},
  doi          = {10.1002/anie.200804558},
  volume       = {48},
  year         = {2009},
}

@article{13424,
  abstract     = {Changing shapes: Metastable spherical aggregates of gold nanoparticles undergo a one-to-one, thermally induced transformation into heterodimers comprising connected plate and spherical domains. By controlling the reaction time, it is possible to isolate a variety of structures differing in the relative sizes of the domains and in the overall optical properties (see picture).},
  author       = {Klajn, Rafal and Pinchuk, Anatoliy O. and Schatz, George C. and Grzybowski, Bartosz A.},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  keywords     = {General Chemistry, Catalysis},
  number       = {44},
  pages        = {8363--8367},
  publisher    = {Wiley},
  title        = {{Synthesis of heterodimeric sphere–prism nanostructures via metastable gold supraspheres}},
  doi          = {10.1002/anie.200702570},
  volume       = {46},
  year         = {2007},
}

@article{13429,
  abstract     = {The fruitful core: Organic syntheses reported in the literature from 1850 to 2004 are analyzed with mathematical tools from network theory and statistical physics. There is a set of substances (the core) from which the majority of other organic compounds can be made (see picture; red: core, blue: periphery, green: islands). Search algorithms are used to identify small optimal sets of maximally useful chemicals.},
  author       = {Bishop, Kyle J. M. and Klajn, Rafal and Grzybowski, Bartosz A.},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  keywords     = {General Chemistry, Catalysis},
  number       = {32},
  pages        = {5348--5354},
  publisher    = {Wiley},
  title        = {{The core and most useful molecules in organic chemistry}},
  doi          = {10.1002/anie.200600881},
  volume       = {45},
  year         = {2006},
}