@article{17917,
  abstract     = {A single-molecule method has been developed based on the scanning tunneling microscope (STM) to selectively couple a series of aniline derivatives and create azobenzenes. The Au-catalyzed oxidative coupling is driven by the local electrochemical potential at the nanostructured Au STM tip. The products are detected in situ by measuring the conductance and molecular junction elongation and compared with analogous measurements of the expected azobenzene derivatives prepared ex situ. This single-molecule approach is robust, and it can quickly and reproducibly create reactions for a variety of anilines. We further demonstrate the selective synthesis of geometric isomers and the assembly of complex molecular architectures by sequential coupling of complementary anilines, demonstrating unprecedented control over bond formation at the nanoscale.},
  author       = {Zang, Yaping and Stone, Ilana and Inkpen, Michael S. and Ng, Fay and Lambert, Tristan H. and Nuckolls, Colin and Steigerwald, Michael L. and Roy, Xavier and Venkataraman, Latha},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  number       = {45},
  pages        = {16008--16012},
  publisher    = {Wiley},
  title        = {{In situ coupling of single molecules driven by gold‐catalyzed electrooxidation}},
  doi          = {10.1002/anie.201906215},
  volume       = {58},
  year         = {2019},
}

@article{17919,
  abstract     = {The adsorption geometry and the electronic structure of a Blatter radical derivative on a gold surface were investigated by a combination of high‐resolution noncontact atomic force microscopy and scanning tunneling microscopy. While the hybridization with the substrate hinders direct access to the molecular states, we show that the unpaired‐electron orbital can be probed with Ångström resolution by mapping the spatial distribution of the Kondo resonance. The Blatter derivative features a peculiar delocalization of the unpaired‐electron orbital over some but not all moieties of the molecule, such that the Kondo signature can be related to the spatial fingerprint of the orbital. We observe a direct correspondence between these two quantities, including a pronounced nodal plane structure. Finally, we demonstrate that the spatial signature of the Kondo resonance also persists upon noncovalent dimerization of molecules.},
  author       = {Patera, Laerte L. and Sokolov, Sophia and Low, Jonathan Z. and Campos, Luis M. and Venkataraman, Latha and Repp, Jascha},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  number       = {32},
  pages        = {11063--11067},
  publisher    = {Wiley},
  title        = {{Resolving the unpaired‐electron orbital distribution in a stable organic radical by Kondo resonance mapping}},
  doi          = {10.1002/anie.201904851},
  volume       = {58},
  year         = {2019},
}

@article{13377,
  abstract     = {Confining organic molecules to the surfaces of inorganic nanoparticles can induce intermolecular interactions between them, which can affect the composition of the mixed self-assembled monolayers obtained by co-adsorption from solution of two different molecules. Two thiolated ligands (a dialkylviologen and a zwitterionic sulfobetaine) that can interact with each other electrostatically were coadsorbed onto gold nanoparticles. The nanoparticles favor a narrow range of ratios of these two molecules that is largely independent of the molar ratio in solution. Changing the solution molar ratio of the two ligands by a factor of 5 000 affects the on-nanoparticle ratio of these ligands by only threefold. This behavior is reminiscent of the formation of insoluble inorganic salts (such as AgCl), which similarly compensate positive and negative charges upon crystallizing. Our results pave the way towards developing well-defined hybrid organic–inorganic nanostructures.},
  author       = {Chu, Zonglin and Han, Yanxiao and Král, Petr and Klajn, Rafal},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  keywords     = {General Chemistry, Catalysis},
  number       = {24},
  pages        = {7023--7027},
  publisher    = {Wiley},
  title        = {{“Precipitation on nanoparticles”: Attractive intermolecular interactions stabilize specific ligand ratios on the surfaces of nanoparticles}},
  doi          = {10.1002/anie.201800673},
  volume       = {57},
  year         = {2018},
}

@article{17936,
  abstract     = {We report that the single‐molecule junction conductance of thiol‐terminated silanes with Ag electrodes are higher than the conductance of those formed with Au electrodes. These results are in contrast to the trends in the metal work function Φ(Ag)&lt;Φ(Au). As such, a better alignment of the Au Fermi level to the molecular orbital of silane that mediates charge transport would be expected. This conductance trend is reversed when we replace the thiols with amines, highlighting the impact of metal–S covalent and metal–NH<jats:sub>2</jats:sub> dative bonds in controlling the molecular conductance. Density functional theory calculations elucidate the crucial role of the chemical linkers in determining the level alignment when molecules are attached to different metal contacts. We also demonstrate that conductance of thiol‐terminated silanes with Pt electrodes is lower than the ones formed with Au and Ag electrodes, again in contrast to the trends in the metal work‐functions.},
  author       = {Li, Haixing and Su, Timothy A. and Camarasa‐Gómez, María and Hernangómez‐Pérez, Daniel and Henn, Simon E. and Pokorný, Vladislav and Caniglia, Caravaggio D. and Inkpen, Michael S. and Korytár, Richard and Steigerwald, Michael L. and Nuckolls, Colin and Evers, Ferdinand and Venkataraman, Latha},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  number       = {45},
  pages        = {14145--14148},
  publisher    = {Wiley},
  title        = {{Silver makes better eElectrical contacts to thiol‐terminated silanes than Gold}},
  doi          = {10.1002/anie.201708524},
  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{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{21102,
  abstract     = {Racemates increase the chances of crystallization by allowing molecular contacts to be formed in a greater number of ways. With the advent of protein synthesis, the production of protein racemates and racemic‐protein crystallography are now possible. Curiously, racemic DNA crystallography had not been investigated despite the commercial availability of L- and D‐deoxyribo‐oligonucleotides. Here, we report a study into racemic DNA crystallography showing the strong propensity of racemic DNA mixtures to form racemic crystals. We describe racemic crystal structures of various DNA sequences and folded conformations, including duplexes, quadruplexes, and a four‐way junction, showing that the advantages of racemic crystallography should extend to DNA.},
  author       = {Mandal, Pradeep K and Collie, Gavin W. and Kauffmann, Brice and Huc, Ivan},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  number       = {52},
  pages        = {14424--14427},
  publisher    = {Wiley},
  title        = {{Racemic DNA crystallography}},
  doi          = {10.1002/anie.201409014},
  volume       = {53},
  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{18003,
  author       = {Roy, Xavier and Schenck, Christine L. and Ahn, Seokhoon and Lalancette, Roger A. and Venkataraman, Latha and Nuckolls, Colin and Steigerwald, Michael L.},
  issn         = {1521-3773},
  journal      = {Angewandte Chemie International Edition},
  number       = {50},
  pages        = {12473--12476},
  publisher    = {Wiley},
  title        = {{Quantum soldering of individual quantum dots}},
  doi          = {10.1002/anie.201206301},
  volume       = {51},
  year         = {2012},
}

@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},
}