51
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Pratt DW, Pate BH. Chiral Imprinting in the Gas Phase. Angew Chem Int Ed Engl 2017; 56:16122-16124. [PMID: 29116681 DOI: 10.1002/anie.201709438] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Indexed: 11/05/2022]
Abstract
Undoing the twist: Recent successful attempts to change the relative populations of two otherwise identical enantiomers of a large gas-phase molecule using resonant microwave fields are highlighted. Specifically, the population of a specific enantiomer of a chiral terpene could be enhanced relative to the other enantiomer by the application of a sequence of microwave pulses in a phase- and polarization-controlled manner.
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Affiliation(s)
- David W Pratt
- University of Vermont, Department of Chemistry, Discovery Building, 82 University Place, Burlington, 05405, USA
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52
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Cao H, Minoia A, De Cat I, Seibel J, Waghray D, Li Z, Cornil D, Mali KS, Lazzaroni R, Dehaen W, De Feyter S. Hierarchical self-assembly of enantiopure and racemic helicenes at the liquid/solid interface: from 2D to 3D. NANOSCALE 2017; 9:18075-18080. [PMID: 29135011 DOI: 10.1039/c7nr06700c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The performance of organic nanostructures is closely related to the organization of the functional molecules. Frequently, molecular chirality plays a central role in the way molecules assemble at the supramolecular level. Herein we report the hierarchical self-assembly of benzo-fused tetrathia[7]helicenes on solid surfaces, from a single surface-bound molecule to well-defined microstructures, using a combination of various characterization techniques assisted by molecular modeling simulations. Similarities as well as discrepancies are revealed between homochiral and heterochiral aggregations by monitoring the hierarchical nucleation of helicenes on surfaces, where the impact of enantiopurity, concentration and adsorbate-substrate interaction on molecular organization are disclosed.
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Affiliation(s)
- Hai Cao
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven-University of Leuven, Celestijnenlaan 200-F, 3001 Leuven, Belgium.
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53
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Yang Y, Rice B, Shi X, Brandt JR, Correa da Costa R, Hedley GJ, Smilgies DM, Frost JM, Samuel IDW, Otero-de-la-Roza A, Johnson ER, Jelfs KE, Nelson J, Campbell AJ, Fuchter MJ. Emergent Properties of an Organic Semiconductor Driven by its Molecular Chirality. ACS NANO 2017; 11:8329-8338. [PMID: 28696680 DOI: 10.1021/acsnano.7b03540] [Citation(s) in RCA: 97] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Chiral molecules exist as pairs of nonsuperimposable mirror images; a fundamental symmetry property vastly underexplored in organic electronic devices. Here, we show that organic field-effect transistors (OFETs) made from the helically chiral molecule 1-aza[6]helicene can display up to an 80-fold difference in hole mobility, together with differences in thin-film photophysics and morphology, solely depending on whether a single handedness or a 1:1 mixture of left- and right-handed molecules is employed under analogous fabrication conditions. As the molecular properties of either mirror image isomer are identical, these changes must be a result of the different bulk packing induced by chiral composition. Such underlying structures are investigated using crystal structure prediction, a computational methodology rarely applied to molecular materials, and linked to the difference in charge transport. These results illustrate that chirality may be used as a key tuning parameter in future device applications.
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Affiliation(s)
| | | | | | | | - Rosenildo Correa da Costa
- Faculty of Computing, Engineering and Science, University of South Wales , Cemetery Road, Glyntaff, Pontypridd CF37 4BD, United Kingdom
| | - Gordon J Hedley
- University of St. Andrews , North Haugh, Fife KY16 9SS, United Kingdom
| | - Detlef-M Smilgies
- Cornell High Energy Synchrotron Source (CHESS), Wilson Laboratory, Cornell University , Ithaca, New York 14853, United States
| | - Jarvist M Frost
- Department of Chemistry, University of Bath , Bath BA2 7AY, United Kingdom
- Department of Materials, Imperial College London , London SW7 2AZ, United Kingdom
| | - Ifor D W Samuel
- University of St. Andrews , North Haugh, Fife KY16 9SS, United Kingdom
| | - Alberto Otero-de-la-Roza
- Department of Chemistry, University of British Columbia, Okanagan , 3247 University Way, Kelowna, British Columbia V1V 1V7, Canada
| | - Erin R Johnson
- Department of Chemistry, Dalhousie University , Halifax, Nova Scotia B3H 4R2, Canada
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54
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Brandt JR, Salerno F, Fuchter MJ. The added value of small-molecule chirality in technological applications. Nat Rev Chem 2017. [DOI: 10.1038/s41570-017-0045] [Citation(s) in RCA: 314] [Impact Index Per Article: 44.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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55
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Rodríguez-García L, Hungerbühler K, Baiker A, Meemken F. The Critical Role of Tilted Cinchona Surface Species for Enantioselective Hydrogenation. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00324] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Laura Rodríguez-García
- Institute for Chemical and
Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, Hönggerberg,
HCI, CH-8093 Zürich, Switzerland
| | - Konrad Hungerbühler
- Institute for Chemical and
Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, Hönggerberg,
HCI, CH-8093 Zürich, Switzerland
| | - Alfons Baiker
- Institute for Chemical and
Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, Hönggerberg,
HCI, CH-8093 Zürich, Switzerland
| | - Fabian Meemken
- Institute for Chemical and
Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zürich, Hönggerberg,
HCI, CH-8093 Zürich, Switzerland
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56
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Monitoring interconversion between stereochemical states in single chirality-transfer complexes on a platinum surface. Nat Chem 2017; 9:531-536. [DOI: 10.1038/nchem.2753] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 02/21/2017] [Indexed: 01/19/2023]
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57
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Wang XY, Dienel T, Di Giovannantonio M, Barin GB, Kharche N, Deniz O, Urgel JI, Widmer R, Stolz S, De Lima LH, Muntwiler M, Tommasini M, Meunier V, Ruffieux P, Feng X, Fasel R, Müllen K, Narita A. Heteroatom-Doped Perihexacene from a Double Helicene Precursor: On-Surface Synthesis and Properties. J Am Chem Soc 2017; 139:4671-4674. [DOI: 10.1021/jacs.7b02258] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao-Ye Wang
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Thomas Dienel
- Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Marco Di Giovannantonio
- Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Gabriela Borin Barin
- Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Neerav Kharche
- Department
of Physics, Rensselaer Polytechnic Institute, Troy, 12180 New York, United States
| | - Okan Deniz
- Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - José I. Urgel
- Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Roland Widmer
- Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Samuel Stolz
- Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | | | | | - Matteo Tommasini
- Dipartimento
di Chimica, Materiali ed Ingegneria Chimica ‘G. Natta’, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy
| | - Vincent Meunier
- Department
of Physics, Rensselaer Polytechnic Institute, Troy, 12180 New York, United States
| | - Pascal Ruffieux
- Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Xinliang Feng
- Center
for Advancing Electronics Dresden, Department of Chemistry and Food
Chemistry, Technische Universität Dresden, 01062 Dresden, Germany
| | - Roman Fasel
- Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
- Department
of Chemistry and Biochemistry, University of Bern, 3012 Bern, Switzerland
| | - Klaus Müllen
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Akimitsu Narita
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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58
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Hasan M, Khose VN, Mori T, Borovkov V, Karnik AV. Sui Generis Helicene-Based Supramolecular Chirogenic System: Enantioselective Sensing, Solvent Control, and Application in Chiral Group Transfer Reaction. ACS OMEGA 2017; 2:592-598. [PMID: 31457457 PMCID: PMC6641162 DOI: 10.1021/acsomega.6b00522] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 02/03/2017] [Indexed: 06/10/2023]
Abstract
A novel dioxa[6]helicene-based supramolecular chirogenic system (1) as a specific chiral recognition host for enantiopure trans-1,2-cyclohexanediamine (2) is reported. Host 1 with an inherent free phenolic group and a (1S)-camphanate chiral handle on the opposite terminal rings of the helicene chromophore acted as an efficient turn on fluorescent sensor for S,S-2 with an excellent enantioselective factor, α = K SS /K RR = 6.3 in benzene. This specific host-guest interaction phenomenon is found to be solvent-dependent, which leads to an enantioselective chiral (camphanate) group transfer to the diamine guest molecule. In the case of R,R-2, the de value is up to 68% even at room temperature. Intriguingly, the induced helicity in dioxa[6]helicene diol 6, upon supramolecular hydrogen-bonding interactions, is of opposite sense with positive helicity for S,S-2 and negative helicity for R,R-2, as shown by circular dichroism spectroscopy and in combination with theoretical calculations. This chiral supramolecular system is found to be an excellent host-guest pair for enantiomeric recognition of 2, based on their electronic and steric factors.
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Affiliation(s)
- Mohammed Hasan
- Department
of Chemistry, University of Mumbai, Vidayanagari, Santacruz, Mumbai 400098, India
- Department
of Chemistry and Biotechnology, Tallinn
University of Technology, Akadeemia tee 15, Tallinn 12618, Estonia
| | - Vaibhav N. Khose
- Department
of Chemistry, University of Mumbai, Vidayanagari, Santacruz, Mumbai 400098, India
| | - Tadashi Mori
- Department
of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan
| | - Victor Borovkov
- Department
of Chemistry and Biotechnology, Tallinn
University of Technology, Akadeemia tee 15, Tallinn 12618, Estonia
| | - Anil V. Karnik
- Department
of Chemistry, University of Mumbai, Vidayanagari, Santacruz, Mumbai 400098, India
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59
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60
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Mairena A, Zoppi L, Seibel J, Tröster AF, Grenader K, Parschau M, Terfort A, Ernst KH. Heterochiral to Homochiral Transition in Pentahelicene 2D Crystallization Induced by Second-Layer Nucleation. ACS NANO 2017; 11:865-871. [PMID: 28060482 DOI: 10.1021/acsnano.6b07424] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Gaining insight into molecular recognition at the molecular level, in particular, during nucleation of crystallites, is challenging and calls for studying well-defined model systems. Investigated by means of submolecular resolution scanning tunneling microscopy and theoretical molecular modeling, we report chiral recognition phenomena in the 2D crystallization of the helical chiral aromatic hydrocarbon pentahelicene on a Cu(111) surface. Homochiral, van der Waals bonded dimers constitute building blocks for self-assembly but form heterochiral as well as homochiral long-range-ordered structures. 2D racemate crystals, built up by homochiral dimers of both enantiomers, are observed at coverages close to a full monolayer. As soon as the coverage leads to second-layer nucleation, the dense racemate phase in the first layer disappears and a homochiral dimer conglomerate phase of lower 2D density appears. Our results show that, at the onset of second-layer nucleation, a local change of enantiomeric composition in the first layer occurs, causing the transition from a 2D racemate to a 2D conglomerate.
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Affiliation(s)
- Anaïs Mairena
- Nanoscale Materials Science, Empa, Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Laura Zoppi
- Department of Chemistry, University of Zurich , CH-8057 Zürich, Switzerland
| | - Johannes Seibel
- Nanoscale Materials Science, Empa, Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Alix F Tröster
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt , Max-von-Laue-Straße 7, 60438 Frankfurt, Germany
| | - Konstantin Grenader
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt , Max-von-Laue-Straße 7, 60438 Frankfurt, Germany
| | - Manfred Parschau
- Nanoscale Materials Science, Empa, Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
| | - Andreas Terfort
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt , Max-von-Laue-Straße 7, 60438 Frankfurt, Germany
| | - Karl-Heinz Ernst
- Nanoscale Materials Science, Empa, Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129, CH-8600 Dübendorf, Switzerland
- Department of Chemistry, University of Zurich , CH-8057 Zürich, Switzerland
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61
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Fuhr JD, van der Meijden MW, Cristina LJ, Rodríguez LM, Kellogg RM, Gayone JE, Ascolani H, Lingenfelder M. Chiral expression of adsorbed (MP) 5-amino[6]helicenes: from random structures to dense racemic crystals by surface alloying. Chem Commun (Camb) 2017; 53:130-133. [DOI: 10.1039/c6cc06785a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The chiral expression of a molecule on a surface is driven from a random solid solution on Cu(100) to a racemic crystal on a Sn/Cu(100) alloy.
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Affiliation(s)
| | | | | | | | | | | | | | - Magalí Lingenfelder
- Max Planck-EPFL Laboratory for Molecular Nanoscience
- EPFL SB CMNT NL-CMNT
- Switzerland
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62
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Gliemann BD, Petrovic AG, Zolnhofer EM, Dral PO, Hampel F, Breitenbruch G, Schulze P, Raghavan V, Meyer K, Polavarapu PL, Berova N, Kivala M. Configurationally Stable Chiral Dithia-Bridged Hetero[4]helicene Radical Cation: Electronic Structure and Absolute Configuration. Chem Asian J 2016; 12:31-35. [DOI: 10.1002/asia.201601452] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 11/20/2016] [Indexed: 01/26/2023]
Affiliation(s)
- Bettina D. Gliemann
- Chair of Organic Chemistry I; Department of Chemistry and Pharmacy; Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen; Germany
| | - Ana G. Petrovic
- Department of Life Sciences; New York Institute of Technology, 1855 Broadway, New York; NY, 10023 USA
- Department of Chemistry; Columbia University, 3000 Broadway, New York; NY, 10027 USA
| | - Eva M. Zolnhofer
- Chair of General and Inorganic Chemistry; Department of Chemistry and Pharmacy; Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen; Germany
| | - Pavlo O. Dral
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr; Germany
| | - Frank Hampel
- Chair of Organic Chemistry I; Department of Chemistry and Pharmacy; Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen; Germany
| | - Georg Breitenbruch
- Department of Chromatography and Electrophoresis; Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr; Germany
| | - Philipp Schulze
- Department of Chromatography and Electrophoresis; Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr; Germany
| | - Vijay Raghavan
- Department of Chemistry; Vanderbilt University; TN, 37235 USA 7330 Stevenson Center Station B 351822 Nashville
| | - Karsten Meyer
- Chair of General and Inorganic Chemistry; Department of Chemistry and Pharmacy; Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstrasse 1, 91058 Erlangen; Germany
| | - Prasad L. Polavarapu
- Department of Chemistry; Vanderbilt University; TN, 37235 USA 7330 Stevenson Center Station B 351822 Nashville
| | - Nina Berova
- Department of Chemistry; Columbia University, 3000 Broadway, New York; NY, 10027 USA
| | - Milan Kivala
- Chair of Organic Chemistry I; Department of Chemistry and Pharmacy; Friedrich-Alexander-Universität Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen; Germany
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63
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Wäckerlin C, Li J, Mairena A, Martin K, Avarvari N, Ernst KH. Surface-assisted diastereoselective Ullmann coupling of bishelicenes. Chem Commun (Camb) 2016; 52:12694-12697. [DOI: 10.1039/c6cc05849c] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A surface induces diastereoselectivity in Ullmann coupling of bromohelicenes.
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Affiliation(s)
- Christian Wäckerlin
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- 8600 Dübendorf
- Switzerland
| | - Jingyi Li
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- 8600 Dübendorf
- Switzerland
| | - Anaïs Mairena
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- 8600 Dübendorf
- Switzerland
| | - Kévin Martin
- Laboratoire Moltech Anjou
- Université d'Angers
- Angers
- France
| | | | - Karl-Heinz Ernst
- Empa
- Swiss Federal Laboratories for Materials Science and Technology
- 8600 Dübendorf
- Switzerland
- Department of Chemistry
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