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Peng X, Zhang Y, Liu X, Qian Y, Ouyang Z, Kong H. From Short- to Long-Range Chiral Recognition on Surfaces: Chiral Assembly and Synthesis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2307171. [PMID: 38054810 DOI: 10.1002/smll.202307171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 11/13/2023] [Indexed: 12/07/2023]
Abstract
Research on chiral behaviors of small organic molecules at solid surfaces, including chiral assembly and synthesis, can not only help unravel the origin of the chiral phenomenon in biological/chemical systems but also provide promising strategies to build up unprecedented chiral surfaces or nanoarchitectures with advanced applications in novel nanomaterials/nanodevices. Understanding how molecular chirality is recognized is considered to be a mandatory basis for such studies. In this review, a series of recent studies in chiral assembly and synthesis at well-defined metal surfaces under ultra-high vacuum conditions are outlined. More importantly, the intrinsic mechanisms of chiral recognition are highlighted, including short/long-range chiral recognition in chiral assembly and two main strategies to steer the reaction pathways and modulate selective synthesis of specific chiral products on surfaces.
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Affiliation(s)
- Xinchen Peng
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Yinhui Zhang
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Xinbang Liu
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Yinyue Qian
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Zuoling Ouyang
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
| | - Huihui Kong
- Herbert Gleiter Institute of Nanoscience, School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, P. R. China
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2
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Ahsan A, Wang X, Sk R, Heydari M, Buimaga-Iarinca L, Wäckerlin C, Lucenti E, Decurtins S, Cariati E, Jung TA, Aschauer U, Liu SX. Self-Assembly of N-Rich Triimidazoles on Ag(111): Mixing the Pleasures and Pains of Epitaxy and Strain. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:23000-23009. [PMID: 38053624 PMCID: PMC10694807 DOI: 10.1021/acs.jpcc.3c03325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 09/22/2023] [Indexed: 12/07/2023]
Abstract
In the present report, homochiral hydrogen-bonded assemblies of heavily N-doped (C9H6N6) heterocyclic triimidazole (TT) molecules on an Ag(111) substrate were investigated using scanning tunneling microscopy (STM) and low energy electron diffraction (LEED) techniques. The planar and prochiral TT molecules, which exhibit a threefold rotation symmetry and lack mirror symmetry when assembled on the substrate, carry multiple hydrogen-bonding donor and acceptor functionalities, inevitably leading to the formation of hexameric two-dimensionally extended assemblies that can be either homo- (RR/SS) or heterochiral (RS). Experimental STM data showing well-ordered homochiral domains and experimental LEED data are consistent with simulations assuming the R19.1° overlayer on the Ag(111) lattice. Importantly, we report the unexpected coincidence of spontaneous resolution with the condensation of neighboring islands in adjacent "Janus pairs". The islands are connected by a characteristic fault zone, an observation that we discuss in the context of the fairly symmetric molecule and its propensity to compromise and benefit from interisland bonding at the expense of lattice mismatches and strain in the defect zone. We relate this to the close to triangular shape and the substantial but weak bonding scheme beyond van der Waals (vdW) of the TT molecules, which is due to the three N-containing five-membered imidazole rings. Density functional theory (DFT) calculations show clear energetic differences between homochiral and heterochiral pairwise interactions, clearly supporting the experimental results.
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Affiliation(s)
- Aisha Ahsan
- Laboratory
for X-ray Nanoscience and Technologies, Paul Scherrer Institute, Villigen-PSI 5232, Switzerland
- Department
of Physics, University of Basel, Klingelbergstrasse 82, Basel 4056, Switzerland
| | - Xing Wang
- Department
of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland
| | - Rejaul Sk
- Department
of Physics, University of Basel, Klingelbergstrasse 82, Basel 4056, Switzerland
| | - Mehdi Heydari
- Laboratory
for X-ray Nanoscience and Technologies, Paul Scherrer Institute, Villigen-PSI 5232, Switzerland
- Department
of Physics, University of Basel, Klingelbergstrasse 82, Basel 4056, Switzerland
| | - Luiza Buimaga-Iarinca
- National
Institute for Research and Development of Isotopic and Molecular Technologies
(INCDTIM), Donat Str., Cluj-Napoca 67-103, Romania
| | - Christian Wäckerlin
- Laboratory
for X-ray Nanoscience and Technologies, Paul Scherrer Institute, Villigen-PSI 5232, Switzerland
- Institute
of Physics, École Polytechnique Fédérale de Lausanne Station 3, Lausanne 1015, Switzerland
| | - Elena Lucenti
- Institute
of Chemical Sciences and Technologies “Giulio Natta”
(SCITEC) of CNR, via Golgi 19, Milano 20133, Italy
| | - Silvio Decurtins
- Department
of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland
| | - Elena Cariati
- Institute
of Chemical Sciences and Technologies “Giulio Natta”
(SCITEC) of CNR, via Golgi 19, Milano 20133, Italy
- Department
of Chemistry, Università degli Studi di Milano and INSTM RU Via Golgi 19, Milano 20133, Italy
| | - Thomas A. Jung
- Laboratory
for X-ray Nanoscience and Technologies, Paul Scherrer Institute, Villigen-PSI 5232, Switzerland
- Department
of Physics, University of Basel, Klingelbergstrasse 82, Basel 4056, Switzerland
| | - Ulrich Aschauer
- Department
of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland
- Department
of Chemistry and Physics of Materials, University
of Salzburg, Jakob-Haringer-Str. 2A, Salzburg 5020, Austria
| | - Shi-Xia Liu
- Department
of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, Bern 3012, Switzerland
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3
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Baljozović M, Arnoldi B, Grass S, Lacour J, Aeschlimann M, Stadtmüller B, Ernst KH. Spin- and angle-resolved photoemission spectroscopy study of heptahelicene layers on Cu(111) surfaces. J Chem Phys 2023; 159:044701. [PMID: 37486054 DOI: 10.1063/5.0156581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 06/29/2023] [Indexed: 07/25/2023] Open
Abstract
It has been demonstrated previously that electrons interact differently with chiral molecules depending on their polarization. For enantiomeric pure monolayers of heptahelicene, opposite asymmetries in spin polarization were reported and attributed to the so-called chirality-induced spin selectivity effect. However, these promising proof-of-concept photoemission experiments lack the angular and energy resolution that could provide the necessary insights into the mechanism of this phenomenon. In order to fill in the missing gaps, we provide a detailed spin- and angle-resolved photoemission spectroscopy study of heptahelicene layers on a Cu(111) substrate. Throughout the large accessible energy and angle range, no chirality induced spin asymmetry in photoemission could be observed. Possible reasons for the absence of signatures of the spin-dependent electron transmission through the chiral molecular layer are briefly discussed.
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Affiliation(s)
- M Baljozović
- Molecular Surface Science Group, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - B Arnoldi
- Department of Physics and Research Center OPTIMAS, Rheinland-Pfälzische Technische Universität (RPTU) Kaiserslautern-Landau, 67663 Kaiserslautern, Germany
| | - S Grass
- Department of Organic Chemistry, University of Geneva, 1211 Geneva 4, Switzerland
| | - J Lacour
- Department of Organic Chemistry, University of Geneva, 1211 Geneva 4, Switzerland
| | - M Aeschlimann
- Department of Physics and Research Center OPTIMAS, Rheinland-Pfälzische Technische Universität (RPTU) Kaiserslautern-Landau, 67663 Kaiserslautern, Germany
| | - B Stadtmüller
- Department of Physics and Research Center OPTIMAS, Rheinland-Pfälzische Technische Universität (RPTU) Kaiserslautern-Landau, 67663 Kaiserslautern, Germany
- Institute of Physics Johannes Gutenberg-University Mainz, 55099 Mainz, Germany
| | - K-H Ernst
- Molecular Surface Science Group, Empa, Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
- Nanosurf Laboratory, Institute of Physics, The Czech Academy of Sciences, 16200 Prague, Czech Republic
- Department of Chemistry, University of Zurich, 8057 Zürich, Switzerland
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4
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Yu Z, Shi G, Wang KP, Xu LZ, Chen S, Hu ZQ. Benzothiadiazole-derived double aza [5]helicenes: Synthesis, crystal structure and optical properties. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Liu C, Jin Y, Qi D, Ding X, Ren H, Wang H, Jiang J. Enantioselective assembly and recognition of heterochiral porous organic cages deduced from binary chiral components. Chem Sci 2022; 13:7014-7020. [PMID: 35774155 PMCID: PMC9200113 DOI: 10.1039/d2sc01876d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/20/2022] [Indexed: 11/21/2022] Open
Abstract
Chiral recognition and discrimination is not only of significance in biological processes but also a powerful method to fabricate functional supramolecular materials. Herein, a pair of heterochiral porous organic cages (HPOC-1), out of four possible enantiomeric products, with mirror stereoisomeric crystal structures were cleanly prepared by condensation occurring in the exclusive combination of cyclohexanediamine and binaphthol-based tetraaldehyde enantiomers. Nuclear magnetic resonance and luminescence spectroscopy have been employed to monitor the assembly process of HPOC-1, revealing the clean formation of heterochiral organic cages due to the enantioselective recognition of (S,S)-binaphthol towards (R,R)-cyclohexanediamine derivatives and vice versa. Interestingly, HPOC-1 exhibits circularly polarized luminescence and enantioselective recognition of chiral substrates according to the circular dichroism spectral change. Theoretical simulations have been carried out, rationalizing both the enantioselective assembly and recognition of HPOC-1.
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Affiliation(s)
- Chao Liu
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Yucheng Jin
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Dongdong Qi
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Xu Ding
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Huimin Ren
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Hailong Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
| | - Jianzhuang Jiang
- Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry and Chemical Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing Beijing 100083 China
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6
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Liu S, Bae M, Hao L, Oh JK, White AR, Min Y, Cisneros-Zevallos L, Akbulut M. Bacterial Antifouling Characteristics of Helicene-Graphene Films. NANOMATERIALS 2021; 11:nano11010089. [PMID: 33401616 PMCID: PMC7830421 DOI: 10.3390/nano11010089] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 12/20/2020] [Accepted: 01/01/2021] [Indexed: 12/12/2022]
Abstract
Herein, we describe interfacially-assembled [7]helicene films that were deposited on graphene monolayer using the Langmuir-Schaefer deposition by utilizing the interactions of nonplanar (helicene) and planar (graphene) π–π interactions as functional antifouling coatings. Bacterial adhesion of Staphylococcus aureus on helicene—graphene films was noticeably lower than that on bare graphene, up to 96.8% reductions in bacterial adhesion. The promising bacterial antifouling characteristics of helicene films was attributed to the unique molecular geometry of helicene, i.e., nano-helix, which can hinder the nanoscale bacterial docking processes on a surface. We envision that helicene—graphene films may eventually be used as protective coatings against bacterial antifouling on the electronic components of clinical and biomedical devices.
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Affiliation(s)
- Shuhao Liu
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (S.L.); (M.B.)
| | - Michael Bae
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (S.L.); (M.B.)
| | - Li Hao
- School of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China;
| | - Jun Kyun Oh
- Department of Polymer Science and Engineering, Dankook University, 152 Jukjeon-ro, Suji-gu, Yongin-si 16890, Korea;
| | - Andrew R. White
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA; (A.R.W.); (Y.M.)
| | - Younjin Min
- Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA; (A.R.W.); (Y.M.)
| | - Luis Cisneros-Zevallos
- Department of Horticultural Sciences, Texas A&M University, College Station, TX 77843, USA;
| | - Mustafa Akbulut
- Artie McFerrin Department of Chemical Engineering, Texas A&M University, College Station, TX 77843, USA; (S.L.); (M.B.)
- Correspondence:
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7
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Dhbaibi K, Favereau L, Crassous J. Enantioenriched Helicenes and Helicenoids Containing Main-Group Elements (B, Si, N, P). Chem Rev 2019; 119:8846-8953. [DOI: 10.1021/acs.chemrev.9b00033] [Citation(s) in RCA: 242] [Impact Index Per Article: 48.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Kais Dhbaibi
- ISCR (Institut des Sciences Chimiques de Rennes), UMR6226, CNRS, Université Rennes, F-35000 Rennes, France
- Faculty of Science of Gabès, University of Gabés, Zrig, 6072 Gabès Tunisia
| | - Ludovic Favereau
- ISCR (Institut des Sciences Chimiques de Rennes), UMR6226, CNRS, Université Rennes, F-35000 Rennes, France
| | - Jeanne Crassous
- ISCR (Institut des Sciences Chimiques de Rennes), UMR6226, CNRS, Université Rennes, F-35000 Rennes, France
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8
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Chen S, Ge Z, Jia Q, Wang K, Gan L, Hu Z. The Preparation of Enantiopure [6]‐ and [7]Helicenes from Binaphthanol. Chem Asian J 2019; 14:1462-1466. [DOI: 10.1002/asia.201900210] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 03/14/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Shaojin Chen
- State Key Laboratory Base of Eco-chemical EngineeringCollege of Chemistry and Molecular EngineeringQingdao University of Science and Technology 53, Zhengzhou Rd. Qingdao Shandong P. R. China
| | - Zhaohai Ge
- State Key Laboratory Base of Eco-chemical EngineeringCollege of Chemistry and Molecular EngineeringQingdao University of Science and Technology 53, Zhengzhou Rd. Qingdao Shandong P. R. China
| | - Qiang Jia
- State Key Laboratory Base of Eco-chemical EngineeringCollege of Chemistry and Molecular EngineeringQingdao University of Science and Technology 53, Zhengzhou Rd. Qingdao Shandong P. R. China
| | - Kun‐Peng Wang
- State Key Laboratory Base of Eco-chemical EngineeringCollege of Chemistry and Molecular EngineeringQingdao University of Science and Technology 53, Zhengzhou Rd. Qingdao Shandong P. R. China
| | - Li‐Hua Gan
- School of Chemistry and Chemical EngineeringSouthwest University, Beibei Chongqing 400715 China
| | - Zhi‐Qiang Hu
- State Key Laboratory Base of Eco-chemical EngineeringCollege of Chemistry and Molecular EngineeringQingdao University of Science and Technology 53, Zhengzhou Rd. Qingdao Shandong P. R. China
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9
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Hirai M, Tanaka N, Sakai M, Yamaguchi S. Structurally Constrained Boron-, Nitrogen-, Silicon-, and Phosphorus-Centered Polycyclic π-Conjugated Systems. Chem Rev 2019; 119:8291-8331. [DOI: 10.1021/acs.chemrev.8b00637] [Citation(s) in RCA: 286] [Impact Index Per Article: 57.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Masato Hirai
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8601, Japan
| | - Naoki Tanaka
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8601, Japan
| | - Mika Sakai
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Shigehiro Yamaguchi
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8601, Japan
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
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10
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Cao H, Waghray D, Knoppe S, Dehaen W, Verbiest T, De Feyter S. Tailoring atomic layer growth at the liquid-metal interface. Nat Commun 2018; 9:4889. [PMID: 30459306 PMCID: PMC6244000 DOI: 10.1038/s41467-018-07381-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 10/29/2018] [Indexed: 11/09/2022] Open
Abstract
Engineering atomic structures at metal surfaces represents an important step in the development of novel nanomaterials and nanodevices, but relies predominantly on atomic/molecular beam epitaxy under ultrahigh vacuum conditions, where controlling the deposition processes remains challenging. By using solution-borne nanosized gold clusters as a precursor, here we develop a wet deposition protocol to the fabrication of atomically flat gold nanoislands, so as to utilize the dynamic exchange of surface-active molecules at the liquid-metal interface for manipulating the growth kinetics of ultrathin metallic nanostructures. While remarkable shape and size selection of gold nanoislands is observed, our experimental and theoretical investigations provide compelling evidences that organic adsorbates can impart a bias to the island orientation by preferred adsorption and alignment and intervene in the assembly and disassembly of adatom islands by complexing with Au adatoms. This approach offers a simple solution to regulate atomic layer growth of metals at ambient conditions.
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Affiliation(s)
- Hai Cao
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B3001, Leuven, Belgium.
| | - Deepali Waghray
- Division of Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B3001, Leuven, Belgium
| | - Stefan Knoppe
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B3001, Leuven, Belgium.,Institute for Physical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Wim Dehaen
- Division of Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B3001, Leuven, Belgium
| | - Thierry Verbiest
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B3001, Leuven, Belgium
| | - Steven De Feyter
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, B3001, Leuven, Belgium.
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11
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Freund S, Pawlak R, Moser L, Hinaut A, Steiner R, Marinakis N, Constable EC, Meyer E, Housecroft CE, Glatzel T. Transoid-to-Cisoid Conformation Changes of Single Molecules on Surfaces Triggered by Metal Coordination. ACS OMEGA 2018; 3:12851-12856. [PMID: 31458009 PMCID: PMC6645055 DOI: 10.1021/acsomega.8b01792] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 09/20/2018] [Indexed: 05/12/2023]
Abstract
Conformational isomers are stereoisomers that can interconvert over low potential barriers by rotation around a single bond. However, such bond rotation is hampered by geometrical constraints when molecules are adsorbed on surfaces. Here, we show that the adsorption of 4,4'-bis(4-carboxyphenyl)-6,6'-dimethyl-2,2'-bipyridine molecules on surfaces leads to the appearance of prochiral single molecules on NiO(001) and to enantiopure supramolecular domains on Au(111) surfaces containing the transoid-molecule conformation. Upon additional Fe adatom deposition, molecules undergo a controlled interconversion from a transoid-to-cisoid conformation as a result of coordination of the Fe atoms to the 2,2'-bipyridine moieties. As confirmed by atomic force microscopy images and X-ray photoelectron spectroscopy measurements, the resulting molecular structures become irreversibly achiral.
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Affiliation(s)
- Sara Freund
- Department
of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
| | - Rémy Pawlak
- Department
of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
- E-mail:
| | - Lucas Moser
- Department
of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
| | - Antoine Hinaut
- Department
of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
| | - Roland Steiner
- Department
of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
| | - Nathalie Marinakis
- Department
of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, CH-4058 Basel, Switzerland
| | - Edwin C. Constable
- Department
of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, CH-4058 Basel, Switzerland
| | - Ernst Meyer
- Department
of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
| | - Catherine E. Housecroft
- Department
of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, CH-4058 Basel, Switzerland
| | - Thilo Glatzel
- Department
of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel, Switzerland
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12
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Viglianisi C, Biagioli C, Lippi M, Pedicini M, Villani C, Franzini R, Menichetti S. Synthesis of Heterohelicenes by a Catalytic Multi-Component Povarov Reaction. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801489] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Caterina Viglianisi
- Department of Chemistry “Ugo Schiff”; University of Florence; Via della Lastruccia, 3-13 50019 Sesto Fiorentino Italy
| | - Chiara Biagioli
- Department of Chemistry “Ugo Schiff”; University of Florence; Via della Lastruccia, 3-13 50019 Sesto Fiorentino Italy
| | - Martina Lippi
- Department of Chemistry “Ugo Schiff”; University of Florence; Via della Lastruccia, 3-13 50019 Sesto Fiorentino Italy
- Department of Chemistry; Materials and Chemical Engineering “G. Natta”; Milan Polytechnic; via Mancinelli 7 20131 Milano Italy
| | - Maria Pedicini
- Department of Chemistry “Ugo Schiff”; University of Florence; Via della Lastruccia, 3-13 50019 Sesto Fiorentino Italy
| | - Claudio Villani
- Department of Chemistry and Technology of Drugs; University “La Sapienza”; P.le A. Moro 5 - 00185 Roma Italy
| | - Roberta Franzini
- Department of Chemistry and Technology of Drugs; University “La Sapienza”; P.le A. Moro 5 - 00185 Roma Italy
| | - Stefano Menichetti
- Department of Chemistry “Ugo Schiff”; University of Florence; Via della Lastruccia, 3-13 50019 Sesto Fiorentino Italy
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13
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Deng J, Zhao A, Zhang R, Shan H, Li B, Yang J, Wang B. Hidden Order and Haldane-Like Phase in Molecular Chains Assembled from Conformation-Switchable Molecules. ACS NANO 2018; 12:6515-6522. [PMID: 29920070 DOI: 10.1021/acsnano.8b00146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Topological properties of matters have attracted tremendous interest in the past years due to the scientific and technological importance. It is of great interest to discover the analogs of topological phases in molecular architectures, if the key constituents of the phases are properly mimicked. Using scanning tunneling microscopy, we demonstrate that quasi-1D molecular chains assembled from conformation-switchable dibenzo[ g, p]chrysene molecules show hidden antiparallel order analogous to the hidden antiferromagnetic order in the Haldane phase, a known topological phase of quantum spin-1 chains. This is realized by mimicking the spin degree of freedom with the intramolecular helicene chiral switches and by emulating the interspin antiferromagnetic coupling with intermolecular homochiral coupling. The discovery of the molecular analog of topological matters may inspire the search of molecular architectures with nontrivial topological properties.
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Affiliation(s)
- Jialiang Deng
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics , University of Science and Technology of China , No. 96 Jinzhai Road , Hefei , Anhui 230026 , P. R. China
| | - Aidi Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics , University of Science and Technology of China , No. 96 Jinzhai Road , Hefei , Anhui 230026 , P. R. China
| | - Ruiqi Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics , University of Science and Technology of China , No. 96 Jinzhai Road , Hefei , Anhui 230026 , P. R. China
| | - Huan Shan
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics , University of Science and Technology of China , No. 96 Jinzhai Road , Hefei , Anhui 230026 , P. R. China
| | - Bin Li
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics , University of Science and Technology of China , No. 96 Jinzhai Road , Hefei , Anhui 230026 , P. R. China
| | - Jinlong Yang
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics , University of Science and Technology of China , No. 96 Jinzhai Road , Hefei , Anhui 230026 , P. R. China
| | - Bing Wang
- Hefei National Laboratory for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum Physics , University of Science and Technology of China , No. 96 Jinzhai Road , Hefei , Anhui 230026 , P. R. China
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14
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Severa L, Sázelová P, Císařová I, Šaman D, Koval D, Devadig P, Kašička V, Teplý F. Dutch Resolution of a configurationally stable [5]helquat. Chirality 2018; 30:254-260. [DOI: 10.1002/chir.22789] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 10/25/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Lukáš Severa
- The Institute of Organic Chemistry and Biochemistry of the Czech; Academy of Sciences; Prague 6 Czech Republic
| | - Petra Sázelová
- The Institute of Organic Chemistry and Biochemistry of the Czech; Academy of Sciences; Prague 6 Czech Republic
| | - Ivana Císařová
- Department of Inorganic Chemistry; Charles University; Prague 2 Czech Republic
| | - David Šaman
- The Institute of Organic Chemistry and Biochemistry of the Czech; Academy of Sciences; Prague 6 Czech Republic
| | - Dušan Koval
- The Institute of Organic Chemistry and Biochemistry of the Czech; Academy of Sciences; Prague 6 Czech Republic
| | - Pradeep Devadig
- The Institute of Organic Chemistry and Biochemistry of the Czech; Academy of Sciences; Prague 6 Czech Republic
| | - Václav Kašička
- The Institute of Organic Chemistry and Biochemistry of the Czech; Academy of Sciences; Prague 6 Czech Republic
| | - Filip Teplý
- The Institute of Organic Chemistry and Biochemistry of the Czech; Academy of Sciences; Prague 6 Czech Republic
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15
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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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16
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Le D, Rahman TS. Pt-dipyridyl tetrazine metal-organic network on the Au(100) surface: insights from first principles calculations. Faraday Discuss 2017; 204:83-95. [PMID: 28795746 DOI: 10.1039/c7fd00097a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal-organic coordination networks with active metal centers are a promising class of materials for next-generation catalysts. Motivated by experimental observations of the formation of a Pt-Dipyridyl Tetrazine (DT) metal-organic network on the Au(100) surface [D. Skomski et al., J. Am. Chem. Soc., 2014, 136, 9862], we carried out density functional theory based calculations on the same system. In this discussion, we demonstrate that the strong interaction between DT ligands and Pt metal centers makes the network stable and that the Pt centers become positively charged by donating their electrons to the DT ligands, resulting in +2 oxidation states for the Pt centers. We further show that the Au substrate withdraws electrons from and hybridizes with the dz2 orbital of the Pt centers, altering their electronic structure and related properties. Furthermore, we find that the Pt centers can absorb SO2via donor-acceptor interactions, leading to the formation of σ-bonds in which Pt dz2 orbitals act as electron donors, and that the strength of the resultant σ-bond depends on the registry of the Pt centers with the Au(100) surface. Finally, we identify factors, such as the specificity of the ligands and the substrate, and the fullness of the outer shell of the metal centers, that may affect the chemical properties of the metal centers. We suggest modifications (and replacement) of these factors as one of the ways to tune and design metal-organic coordination networks for next-generation catalysts.
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Affiliation(s)
- Duy Le
- Department of Physics, University of Central Florida, Orlando, FL 32816, USA.
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17
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Pham TA, Tran BV, Nguyen MT, Stöhr M. Chiral-Selective Formation of 1D Polymers Based on Ullmann-Type Coupling: The Role of the Metallic Substrate. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1603675. [PMID: 28121375 DOI: 10.1002/smll.201603675] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 12/16/2016] [Indexed: 05/24/2023]
Abstract
The chiral-selective formation of 1D polymers from a prochiral molecule, namely, 6,12-dibromochrysene in dependence of the type of metal surface is demonstrated by a combined scanning tunneling microscopy and density functional theory study. Deposition of the chosen molecule on Au(111) held at room temperature leads to the formation of a 2D porous molecular network. Upon annealing at 200 °C, an achiral covalently linked polymer is formed on Au(111). On the other hand, a chiral Cu-coordinated polymer is spontaneously formed upon deposition of the molecules on Cu(111) held at room temperature. Importantly, it is found that the chiral-selectivity determines the possibility of obtaining graphene nanoribbons (GNRs). On Au(111), upon annealing at 350 °C or higher cyclo-dehydrogenation occurs transforming the achiral polymer into a GNR. In contrast, the chiral coordination polymer on Cu(111) cannot be converted into a GNR.
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Affiliation(s)
- Tuan Anh Pham
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Bay V Tran
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
| | - Manh-Thuong Nguyen
- Center for Computational Physics, Institute of Physics, Vietnam Academy of Science and Technology, 10 Dao Tan St., Hanoi, Vietnam
| | - Meike Stöhr
- Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747, AG, Groningen, The Netherlands
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18
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Li J, Wäckerlin C, Schnidrig S, Joliat E, Alberto R, Ernst KH. On-Surface Metalation and 2D Self-Assembly of Pyrphyrin Molecules Into Metal-Coordinated Networks on Cu(111). Helv Chim Acta 2016. [DOI: 10.1002/hlca.201600278] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jingyi Li
- Empa, Swiss Federal Laboratories for Materials Science and Technology; Überlandstrasse 129 8600 Dübendorf Switzerland
| | - Christian Wäckerlin
- Empa, Swiss Federal Laboratories for Materials Science and Technology; Überlandstrasse 129 8600 Dübendorf Switzerland
| | - Stephan Schnidrig
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Evelyne Joliat
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Roger Alberto
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
| | - Karl-Heinz Ernst
- Empa, Swiss Federal Laboratories for Materials Science and Technology; Überlandstrasse 129 8600 Dübendorf Switzerland
- Department of Chemistry; University of Zurich; Winterthurerstrasse 190 8057 Zurich Switzerland
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19
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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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20
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Sun X, Silly F, Maurel F, Dong C. Supramolecular chiral host-guest nanoarchitecture induced by the selective assembly of barbituric acid derivative enantiomers. NANOTECHNOLOGY 2016; 27:42LT01. [PMID: 27623155 DOI: 10.1088/0957-4484/27/42/42lt01] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Barbituric acid derivatives are prochiral molecules, i.e. they are chiral upon adsorption on surfaces. Scanning tunneling microscopy reveals that barbituric acid derivatives self-assemble into a chiral guest-host supramolecular architecture at the solid-liquid interface on graphite. The host nanoarchitecture has a sophisticated wavy shape pattern and paired guest molecules are nested insides the cavities of the host structure. Each unit cell of the host structure is composed of both enantiomers with a ratio of 1:1. Furthermore, the wavy patterns of the nanoarchitecture are formed from alternative appearance of left- and right-handed chiral building blocks, which makes the network heterochiral. The functional guest-host nanoarchitecture is the result of two-dimensional chiral amplification from single enantiomers to organizational heterochiral supramolecular self-assembly.
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Affiliation(s)
- Xiaonan Sun
- Université Paris Diderot, Sorbonne Paris Cité, ITODYS UMR CNRS 7086, 15 rue J-A de Baïf, 75205 Paris Cedex 13, France
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21
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Viglianisi C, Menichetti S, Piantini S, Tofani L. Helical-Shaped Bis-1,4-benzoxathiines through an Inverse-Electron-Demand Hetero-Diels-Alder Reaction ofortho-Thioquinones. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600850] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Caterina Viglianisi
- Department of Chemistry “U. Schiff”; University of Florence; Via della Lastruccia 3-13 50019 Sesto Fiorentino Italy
| | - Stefano Menichetti
- Department of Chemistry “U. Schiff”; University of Florence; Via della Lastruccia 3-13 50019 Sesto Fiorentino Italy
| | - Sara Piantini
- Department of Chemistry “U. Schiff”; University of Florence; Via della Lastruccia 3-13 50019 Sesto Fiorentino Italy
| | - Lorenzo Tofani
- Department of Chemistry “U. Schiff”; University of Florence; Via della Lastruccia 3-13 50019 Sesto Fiorentino Italy
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22
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Abstract
The chiral recognition among biomolecules is fundamentally important for many processes of life, including the stereochemistry of evolution. Of special interest is chiral recognition during crystallization of racemates, when either homochiral recognition leads to a conglomerate of homochiral crystals or heterochiral recognition dominates resulting in a racemic compound. The complex nature of molecular recognition at the level of nucleation and crystal growth renders it difficult to understand and calls for manageable model systems. Notably, the approach of studying aggregation of molecules at surfaces under well-defined conditions includes the benefit of the availability of a multitude of highly sensitive investigation methods, of which scanning tunneling microscopy (STM) with its submolecular resolution is tremendously valuable. Heterogeneous nucleation at surfaces is strongly favored over homogeneous nucleation in solution; hence, surfaces are significantly involved in stereochemical recognition during crystallization. Helicenes are a fascinating class of chiral compounds with outstanding optical activity. These π-conjugated, ortho-fused, aromatic hydrocarbons are promising candidates for organic electronic devices such as sensors, circular dichroic photonics, liquid crystal displays or spin filters. But in particular the defined footprint of their terminal benzo rings on a surface makes them interesting for studying stereochemical recognition with different single crystalline surfaces and the impact this has, in turn, on intermolecular recognition. In this Account, we describe the self-assembly of helicenes on metal surfaces with the focus on stereochemical recognition in two-dimensional structures. Using the isomeric all-carbon helicenes, heptahelicene and dibenzohelicene as examples, different aggregation phenomena on different surfaces of single crystalline copper, silver, and gold are investigated. By means of STM different modes of transmission of molecular handedness from single molecules into extended two-dimensional supramolecular structures are identified. For the problem of racemate versus conglomerate crystallization, the impact of surface and molecular structure and their interplay are analyzed. This leads to detailed conclusions about the importance of the match of molecular and surface binding sites for long-range self-assembly. The absence of polar groups puts emphasis on van der Waals interaction and their maximization by steric overlap of molecular parts in enantiomeric and diastereomeric interactions. With STM as a manipulation tool, dimers are manually separated in order to analyze their chiral composition. And finally, new nonlinear cooperative effects induced by small enantiospecific bias are discovered that lead to single enantiomorphism in two-dimensional racemate crystals as well as in racemic multilayered films. By means of these model studies many details that govern chiral recognition at surfaces are rationalized.
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Affiliation(s)
- 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, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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23
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Schweinfurth D, Mazzolini M, Neshchadin D, Hoyer C, Geier R, Gatterer K, Trapp N, Gescheidt G, Diederich F. Electronic Structures and Chiroptical Properties of Post-functionalized Helicene Quinones. Chemistry 2016; 22:7152-7. [PMID: 27106784 DOI: 10.1002/chem.201600611] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Indexed: 11/07/2022]
Abstract
The synthesis of redox-active p- and o-quinones 2-phenylamino-4-phenylimino[6]helicene-1-one 1, 2-phenylamino[6]-helicene-1,4-dione 2, and 4-phenyl[6]helicene-1,2-dione 3 in their enantiopure forms by post-functionalization of (P)- and (M)-1,2-dimethoxy[6]helicene is presented. Structural characterization in solution and in the solid state was accomplished by 2D NMR spectroscopy methods and X-ray diffraction analysis, respectively. Interpretation of electrochemical redox data was accompanied by a detailed orbital picture, derived from DFT calculations. The electronic structures of compounds 1-3 were investigated by UV/Vis and electronic circular dichroism (ECD) spectroscopy, complemented by TD-DFT calculations. Quinones 1-3 were chemically reduced to study the EPR signatures of their respective radical anions. DFT methods were used for the atom assignment of the hyperfine coupling constants. The results are discussed within the context of electrochromic chiral switches and molecular recognition.
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Affiliation(s)
- David Schweinfurth
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| | - Marcella Mazzolini
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| | - Dmytro Neshchadin
- Institute of Physical and Theoretical Chemistry, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010, Graz, Austria
| | - Carolin Hoyer
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| | - Roman Geier
- Institute of Physical and Theoretical Chemistry, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010, Graz, Austria
| | - Karl Gatterer
- Institute of Physical and Theoretical Chemistry, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010, Graz, Austria
| | - Nils Trapp
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland
| | - Georg Gescheidt
- Institute of Physical and Theoretical Chemistry, NAWI Graz, Graz University of Technology, Stremayrgasse 9, 8010, Graz, Austria
| | - François Diederich
- Laboratory of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, 8093, Zurich, Switzerland.
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24
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Yamamoto Y, Sakai H, Yuasa J, Araki Y, Wada T, Sakanoue T, Takenobu T, Kawai T, Hasobe T. Synthetic Control of the Excited-State Dynamics and Circularly Polarized Luminescence of Fluorescent “Push-Pull” Tetrathia[9]helicenes. Chemistry 2016; 22:4263-73. [DOI: 10.1002/chem.201504048] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2015] [Indexed: 12/27/2022]
Affiliation(s)
- Yuki Yamamoto
- Department of Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi Yokohama, Kanagawa 223-8522 Japan
| | - Hayato Sakai
- Department of Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi Yokohama, Kanagawa 223-8522 Japan
| | - Junpei Yuasa
- Graduate School of Materials Science; Nara Institute of Science and Technology, NAIST; Ikoma, Nara 630-0192 Japan
- PRESTO (Japan) Science and Technology Agency; Kawaguchi 332-0012 Japan
| | - Yasuyuki Araki
- Institute of Multidisciplinary Research for Advanced Materials; Tohoku University; 2-1-1 Katahira, Aoba-ku Sendai 980-8577 Japan
| | - Takehiko Wada
- Institute of Multidisciplinary Research for Advanced Materials; Tohoku University; 2-1-1 Katahira, Aoba-ku Sendai 980-8577 Japan
| | - Tomo Sakanoue
- Department of Applied Physics; Waseda University; 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Taishi Takenobu
- Department of Applied Physics; Waseda University; 3-4-1, Okubo, Shinjuku Tokyo 169-8555 Japan
| | - Tsuyoshi Kawai
- Graduate School of Materials Science; Nara Institute of Science and Technology, NAIST; Ikoma, Nara 630-0192 Japan
| | - Taku Hasobe
- Department of Chemistry; Faculty of Science and Technology; Keio University; 3-14-1 Hiyoshi Yokohama, Kanagawa 223-8522 Japan
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25
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Müller K, Moreno-López JC, Gottardi S, Meinhardt U, Yildirim H, Kara A, Kivala M, Stöhr M. Cyano-Functionalized Triarylamines on Coinage Metal Surfaces: Interplay of Intermolecular and Molecule-Substrate Interactions. Chemistry 2015; 22:581-9. [PMID: 26636437 DOI: 10.1002/chem.201503205] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Indexed: 11/09/2022]
Abstract
The self-assembly of cyano-functionalized triarylamine derivatives on Cu(111), Ag(111) and Au(111) was studied by means of scanning tunnelling microscopy, low-energy electron diffraction, X-ray photoelectron spectroscopy and density functional theory calculations. Different bonding motifs, such as antiparallel dipolar coupling, hydrogen bonding and metal coordination, were observed. Whereas on Ag(111) only one hexagonally close-packed pattern stabilized by hydrogen bonding is observed, on Au(111) two different partially porous phases are present at submonolayer coverage, stabilized by dipolar coupling, hydrogen bonding and metal coordination. In contrast to the self-assembly on Ag(111) and Au(111), for which large islands are formed, on Cu(111), only small patches of hexagonally close-packed networks stabilized by metal coordination and areas of disordered molecules are found. The significant variety in the molecular self-assembly of the cyano-functionalized triarylamine derivatives on these coinage metal surfaces is explained by differences in molecular mobility and the subtle interplay between intermolecular and molecule-substrate interactions.
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Affiliation(s)
- Kathrin Müller
- Zernike Institute for Advanced Materials, Nijenborgh 4, 9747AG Groningen (The Netherlands), Fax: (+31) 503637208. .,Current Address: Max Planck Institute for Solid State Research, Heisenbergstrasse 1, 70569 Stuttgart (Germany).
| | - Juan Carlos Moreno-López
- Zernike Institute for Advanced Materials, Nijenborgh 4, 9747AG Groningen (The Netherlands), Fax: (+31) 503637208
| | - Stefano Gottardi
- Zernike Institute for Advanced Materials, Nijenborgh 4, 9747AG Groningen (The Netherlands), Fax: (+31) 503637208
| | - Ute Meinhardt
- Chair of Organic Chemistry 1, Department of Chemistry and Pharmacy, University of Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen (Germany), Fax: (+49) 9131-8526865
| | - Handan Yildirim
- Department of Physics, University of Central Florida, Orlando, Florida 32816 (USA)
| | - Abdelkader Kara
- Department of Physics, University of Central Florida, Orlando, Florida 32816 (USA)
| | - Milan Kivala
- Chair of Organic Chemistry 1, Department of Chemistry and Pharmacy, University of Erlangen-Nürnberg, Henkestrasse 42, 91054 Erlangen (Germany), Fax: (+49) 9131-8526865.
| | - Meike Stöhr
- Zernike Institute for Advanced Materials, Nijenborgh 4, 9747AG Groningen (The Netherlands), Fax: (+31) 503637208.
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26
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Vacek J, Chocholoušová JV, Stará IG, Starý I, Dubi Y. Mechanical tuning of conductance and thermopower in helicene molecular junctions. NANOSCALE 2015; 7:8793-8802. [PMID: 25905658 DOI: 10.1039/c5nr01297j] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Helicenes are inherently chiral polyaromatic molecules composed of all-ortho fused benzene rings possessing a spring-like structure. Here, using a combination of density functional theory and tight-binding calculations, it is demonstrated that controlling the length of the helicene molecule by mechanically stretching or compressing the molecular junction can dramatically change the electronic properties of the helicene, leading to a tunable switching behavior of the conductance and thermopower of the junction with on/off ratios of several orders of magnitude. Furthermore, control over the helicene length and number of rings is shown to lead to more than an order of magnitude increase in the thermopower and thermoelectric figure-of-merit over typical molecular junctions, presenting new possibilities of making efficient thermoelectric molecular devices. The physical origin of the strong dependence of the transport properties of the junction is investigated, and found to be related to a shift in the position of the molecular orbitals.
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Affiliation(s)
- Jaroslav Vacek
- Institute of Organic Chemistry and Biochemistry, v.v.i., Academy of Sciences of the Czech Republic, Flemingovo nám. 2, 16610 Prague 6, Czech Republic.
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27
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Šámal M, Chercheja S, Rybáček J, Vacek Chocholoušová J, Vacek J, Bednárová L, Šaman D, Stará IG, Starý I. An Ultimate Stereocontrol in Asymmetric Synthesis of Optically Pure Fully Aromatic Helicenes. J Am Chem Soc 2015; 137:8469-74. [DOI: 10.1021/jacs.5b02794] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michal Šámal
- Institute of Organic
Chemistry
and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo
nám. 2, 16610 Prague 6, Czech Republic
| | - Serghei Chercheja
- Institute of Organic
Chemistry
and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo
nám. 2, 16610 Prague 6, Czech Republic
| | - Jiří Rybáček
- Institute of Organic
Chemistry
and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo
nám. 2, 16610 Prague 6, Czech Republic
| | - Jana Vacek Chocholoušová
- Institute of Organic
Chemistry
and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo
nám. 2, 16610 Prague 6, Czech Republic
| | - Jaroslav Vacek
- Institute of Organic
Chemistry
and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo
nám. 2, 16610 Prague 6, Czech Republic
| | - Lucie Bednárová
- Institute of Organic
Chemistry
and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo
nám. 2, 16610 Prague 6, Czech Republic
| | - David Šaman
- Institute of Organic
Chemistry
and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo
nám. 2, 16610 Prague 6, Czech Republic
| | - Irena G. Stará
- Institute of Organic
Chemistry
and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo
nám. 2, 16610 Prague 6, Czech Republic
| | - Ivo Starý
- Institute of Organic
Chemistry
and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo
nám. 2, 16610 Prague 6, Czech Republic
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28
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Hasan M, Pandey AD, Khose VN, Mirgane NA, Karnik AV. Sterically Congested Chiral 7,8-Dioxa[6]helicene and Its Dihydro Analogues: Synthesis, Regioselective Functionalization, and Unexpected Domino Prins Reaction. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500327] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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Xu H, Wang H, Zhou S, Xiao L, Yan Y, Yuan Q. A protocol of self-assembled monolayers of fluorescent block molecules for trace Zn(ii) sensing: structures and mechanisms. RSC Adv 2015. [DOI: 10.1039/c5ra20198e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The fluorescent behavior of the SAM of TPE-C4-L2 block molecules on HOPG surface has been revealed using STM.
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Affiliation(s)
- Hongbo Xu
- Laboratory of Environmental Science and Technology
- The Xinjiang Technical Institute of Physics and Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Urumqi 830011
| | - Huanhuan Wang
- Laboratory of Environmental Science and Technology
- The Xinjiang Technical Institute of Physics and Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Urumqi 830011
| | - Shenghai Zhou
- Laboratory of Environmental Science and Technology
- The Xinjiang Technical Institute of Physics and Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Urumqi 830011
| | - Lili Xiao
- Laboratory of Environmental Science and Technology
- The Xinjiang Technical Institute of Physics and Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Urumqi 830011
| | - Yun Yan
- Beijing National Laboratory for Molecular Sciences (BNLMS)
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Qunhui Yuan
- Laboratory of Environmental Science and Technology
- The Xinjiang Technical Institute of Physics and Chemistry
- Key Laboratory of Functional Materials and Devices for Special Environments
- Chinese Academy of Sciences
- Urumqi 830011
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30
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Liu C, Si Y, Pan X, Yang G. Photophysical properties of quinoxaline-fused [7]carbohelicene derivatives. RSC Adv 2015. [DOI: 10.1039/c5ra12577d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The electronic circular dichroism, UV-Vis absorption, nonlinear optics, and charge transport properties of novel quinoxaline-fused 7-carbohelicene derivatives have been investigated for the first time.
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Affiliation(s)
- Chunyu Liu
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Yanling Si
- College of Resource and Environmental Science
- Jilin Agricultural University
- Changchun
- P. R. China
| | - Xiumei Pan
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Guochun Yang
- Faculty of Chemistry
- Northeast Normal University
- Changchun
- China
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31
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Nijs T, Malzner FJ, Fatayer S, Wäckerlin A, Nowakowska S, Constable EC, Housecroft CE, Jung TA. Programmed assembly of 4,2′:6′,4′′-terpyridine derivatives into porous, on-surface networks. Chem Commun (Camb) 2015; 51:12297-300. [DOI: 10.1039/c5cc04186d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
4,2′:6′,4′′-Terpyridine building blocks self-assemble into hydrogen-bonded domains; addition of copper atoms results in an on-surface transformation into a coordination network.
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Affiliation(s)
- Thomas Nijs
- Department of Physics
- University of Basel
- 4056 Basel
- Switzerland
| | | | - Shadi Fatayer
- Department of Physics
- University of Basel
- 4056 Basel
- Switzerland
- Instituto de Física “Gleb Wataghin”
| | | | | | | | | | - Thomas A. Jung
- Laboratory for Micro- and Nanotechnology
- Paul Scherrer Institut
- 5232 Villigen
- Switzerland
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32
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Schweinfurth D, Zalibera M, Kathan M, Shen C, Mazzolini M, Trapp N, Crassous J, Gescheidt G, Diederich F. Helicene Quinones: Redox-Triggered Chiroptical Switching and Chiral Recognition of the Semiquinone Radical Anion Lithium Salt by Electron Nuclear Double Resonance Spectroscopy. J Am Chem Soc 2014; 136:13045-52. [DOI: 10.1021/ja5069323] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- David Schweinfurth
- Laboratory
of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, CH-8093 Zurich, Switzerland
| | - Michal Zalibera
- Institute
of Physical and Theoretical Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - Michael Kathan
- Laboratory
of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, CH-8093 Zurich, Switzerland
| | - Chengshuo Shen
- Institut des Sciences
Chimiques de Rennes, UMR 6226, CNRS—Université de Rennes
1, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Marcella Mazzolini
- Laboratory
of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, CH-8093 Zurich, Switzerland
| | - Nils Trapp
- Laboratory
of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, CH-8093 Zurich, Switzerland
| | - Jeanne Crassous
- Institut des Sciences
Chimiques de Rennes, UMR 6226, CNRS—Université de Rennes
1, Campus de Beaulieu, 35042 Rennes Cedex, France
| | - Georg Gescheidt
- Institute
of Physical and Theoretical Chemistry, Graz University of Technology, Stremayrgasse 9, A-8010 Graz, Austria
| | - François Diederich
- Laboratory
of Organic Chemistry, ETH Zurich, Vladimir-Prelog-Weg 3, CH-8093 Zurich, Switzerland
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33
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Nguyen MT, Seriani N, Gebauer R. Defective α-Fe2O3(0001): An ab Initio Study. Chemphyschem 2014; 15:2930-5. [DOI: 10.1002/cphc.201402153] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Indexed: 01/24/2023]
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34
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Sakai H, Shinto S, Araki Y, Wada T, Sakanoue T, Takenobu T, Hasobe T. Formation of one-dimensional helical columns and excimerlike excited states by racemic quinoxaline-fused [7]carbohelicenes in the crystal. Chemistry 2014; 20:10099-109. [PMID: 25042705 DOI: 10.1002/chem.201402426] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Indexed: 12/28/2022]
Abstract
A series of quinoxaline-fused [7]carbohelicenes (HeQu derivatives) was designed and synthesized to evaluate their structural and photophysical properties in the crystal state. The quinoxaline units were expected to enhance the light-emitting properties and to control the packing structures in the crystal. The electrochemical and spectroscopic properties and excited-state dynamics of these compounds were investigated in detail. The first oxidation potentials of HeQu derivatives are approximately the same as that of unsubstituted reference [7]carbohelicene (Heli), whereas their first reduction potentials are shifted to the positive by about 0.7 V. The steady-state absorption, fluorescence, and circular dichroism spectra also became redshifted compared to those of Heli. The molecular orbitals and energy levels of the HOMO and LUMO states, calculated by DFT methods, support these trends. Moreover, the absolute fluorescence quantum yields of HeQu derivatives are about four times larger than that of Heli. The structural properties of the aggregated states were analyzed by single-crystal analysis. Introduction of appropriate substituents (i.e., 4-methoxyphenyl) in the HeQu unit enabled the construction of one-dimensional helical columns of racemic HeQu derivatives in the crystal state. Helix formation is based on intracolumn π-stacking between two neighboring [7]carbohelicenes and intercolumn CH⋅⋅⋅N interaction between a nitrogen atom of a quinoxaline unit and a hydrogen atom of a helicene unit. The time-resolved fluorescence spectra of single crystals clearly showed an excimerlike delocalized excited state owing to the short distance between neighboring [7]carbohelicene units.
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Affiliation(s)
- Hayato Sakai
- Department of Chemistry, Faculty of Science and Technology, Keio University, Yokohama, Kanagawa 223-8522 (Japan), Fax: (+81) 45-566-1697
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35
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Skomski D, Tempas CD, Smith KA, Tait SL. Redox-active on-surface assembly of metal-organic chains with single-site Pt(II). J Am Chem Soc 2014; 136:9862-5. [PMID: 24960669 DOI: 10.1021/ja504850f] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The formation and stabilization of well-defined transition-metal single sites at surfaces may open new routes to achieve higher selectivity in heterogeneous catalysts. Organic ligand coordination to produce a well-defined oxidation state in weakly reducing metal sites at surfaces, desirable for selective catalysis, has not been achieved. Here, we address this using metallic platinum interacting with a dipyridyl tetrazine ligand on a single crystal gold surface. X-ray photoelectron spectroscopy measurements demonstrate the metal-ligand redox activity and are paired with molecular-resolution scanning probe microscopy to elucidate the structure of the metal-organic network. Comparison to the redox-inactive diphenyl tetrazine ligand as a control experiment illustrates that the redox activity and molecular-level ordering at the surface rely on two key elements of the metal complexes: (i) bidentate binding sites providing a suitable square-planar coordination geometry when paired around each Pt, and (ii) redox-active functional groups to enable charge transfer to a well-defined Pt(II) oxidation state. Ligand-mediated control over the oxidation state and structure of single-site metal centers that are in contact with a metal surface may enable advances in higher selectivity for next generation heterogeneous catalysts.
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Affiliation(s)
- Daniel Skomski
- Department of Chemistry, Indiana University , 800 E. Kirkwood Ave., Bloomington, Indiana 47405, United States
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36
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Shchyrba A, Wäckerlin C, Nowakowski J, Nowakowska S, Björk J, Fatayer S, Girovsky J, Nijs T, Martens SC, Kleibert A, Stöhr M, Ballav N, Jung TA, Gade LH. Controlling the Dimensionality of On-Surface Coordination Polymers via Endo- or Exoligation. J Am Chem Soc 2014; 136:9355-63. [DOI: 10.1021/ja5020103] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aneliia Shchyrba
- Department
of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
| | - Christian Wäckerlin
- Laboratory
for Micro- and Nanotechnology, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
| | - Jan Nowakowski
- Laboratory
for Micro- and Nanotechnology, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
| | - Sylwia Nowakowska
- Department
of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
| | - Jonas Björk
- Department of Physics,
Chemistry and Biology, IFM, Linköping University, Linköping 581 83, Sweden
| | - Shadi Fatayer
- Department
of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
| | - Jan Girovsky
- Laboratory
for Micro- and Nanotechnology, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
| | - Thomas Nijs
- Department
of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
| | - Susanne C. Martens
- Department
of Physics, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
- Anorganisch-Chemisches
Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Armin Kleibert
- Swiss Light Source, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
| | - Meike Stöhr
- Zernike
Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Nirmalya Ballav
- Department
of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Thomas A. Jung
- Laboratory
for Micro- and Nanotechnology, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
| | - Lutz H. Gade
- Anorganisch-Chemisches
Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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37
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Shen Y, Lu HY, Chen CF. Dioxygen-Triggered Transannular Dearomatization of Benzo[5]helicene Diols: Highly Efficient Synthesis of Chiral π-Extended Diones. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201400486] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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38
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Shen Y, Lu HY, Chen CF. Dioxygen-Triggered Transannular Dearomatization of Benzo[5]helicene Diols: Highly Efficient Synthesis of Chiral π-Extended Diones. Angew Chem Int Ed Engl 2014; 53:4648-51. [DOI: 10.1002/anie.201400486] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Revised: 02/26/2014] [Indexed: 11/08/2022]
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39
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Ascolani H, van der Meijden MW, Cristina LJ, Gayone JE, Kellogg RM, Fuhr JD, Lingenfelder M. Van der Waals interactions in the self-assembly of 5-amino[6]helicene on Cu(100) and Au(111). Chem Commun (Camb) 2014; 50:13907-9. [DOI: 10.1039/c4cc04338c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
No H bonding for the amino group: van der Waals interactions guide the self-assembly of an aminohelicene on Cu(100) and Au(111).
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Affiliation(s)
| | | | | | | | | | | | - Magalí Lingenfelder
- Max Planck-EPFL Laboratory for Molecular Nanoscience
- EPFL SB CMNT NL-CMNT
- CH 1015 Lausanne, Switzerland
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