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Kawano SI, Nakaya M, Saitow M, Ishiguro A, Yanai T, Onoe J, Tanaka K. Thermally Stable Array of Discrete C 60s on a Two-Dimensional Crystalline Adlayer of Macrocycles both in Vacuo and under Ambient Pressure. J Am Chem Soc 2022; 144:6749-6758. [PMID: 35315659 DOI: 10.1021/jacs.1c13610] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A periodic monolayer array of discrete C60s was generated on an atomically flat Au(111) surface with the aid of a template adlayer. The template was a two-dimensional (2D) array of molecular pits prepared on an Au(111) surface through 2D crystallization of shape-persistent macrocycles composed of four carbazole and four salphens/Ni-salphens with a 1 nm hollow. Scanning tunneling microscopy imaging under ultra-high vacuum revealed that the square-shaped macrocycles, with 1.5 nm sides, were arranged with a periodic spacing of approximately 4.0 nm on the Au(111) surface, where the orientation and periodicity of the macrocycles were dependent on their chemical structures. After sublimation of C60s onto the adlayer, a single C60 molecule was entrapped in each pit, and an ordered molecular array of C60s was attained with a pattern similar to that of the macrocycles. The periodic pattern of C60s on the surface was thermally stable up to approximately 200 °C, even under ambient pressure. Scanning tunneling spectroscopy suggested the existence of an electronic interaction between the C60s and the Au(111) surface that was influenced by the macrocycle template on the surface.
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Affiliation(s)
- Shin-Ichiro Kawano
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Masato Nakaya
- Department of Energy Science and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan
| | - Masaaki Saitow
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Atsuki Ishiguro
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
| | - Takeshi Yanai
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Chikusa, Nagoya 464-8601, Japan
| | - Jun Onoe
- Department of Energy Science and Engineering, Graduate School of Engineering, Nagoya University, Chikusa, Nagoya 464-8603, Japan
| | - Kentaro Tanaka
- Department of Chemistry, Graduate School of Science, Nagoya University, Chikusa, Nagoya 464-8602, Japan
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2
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Han XN, Han Y, Chen CF. Supramolecular tessellations by the exo-wall interactions of pagoda[4]arene. Nat Commun 2021; 12:6378. [PMID: 34737290 PMCID: PMC8568916 DOI: 10.1038/s41467-021-26729-3] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 10/20/2021] [Indexed: 12/02/2022] Open
Abstract
Supramolecular tessellation has gained increasing interest in supramolecular chemistry for its structural aesthetics and potential applications in optics, magnetics and catalysis. In this work, a new kind of supramolecular tessellations (STs) have been fabricated by the exo-wall interactions of pagoda[4]arene (P4). ST with rhombic tiling pattern was first constructed by P4 itself through favorable π···π interactions between anthracene units of adjacent P4. Notably, various highly ordered STs with different tiling patterns have been fabricated based on exo-wall charge transfer interactions between electron-rich P4 and electron-deficient guests including 1,4-dinitrobenzene, terephthalonitrile and tetrafluoroterephthalonitrile. Interestingly, solvent modulation and guest selection played a crucial role in controlling the molecular arrangements in the co-crystal superstructures. This work not only proves that P4 is an excellent macrocyclic building block for the fabrication of various STs, but also provides a new perspective and opportunity for the design and construction of supramolecular two-dimensional organic materials. Supramolecular tessellation has gained increasing interest in supramolecular chemistry for its structural aesthetics and potential applications in optics, magnetics and catalysis. Here, the authors expand the examples of molecular building blocks for supramolecular tessellation and fabricate supramolecular tessellations using the exo-wall interactions of pagoda[4]arene.
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Affiliation(s)
- Xiao-Ni Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China.,University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Ying Han
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China
| | - Chuan-Feng Chen
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, 100190, Beijing, China. .,University of Chinese Academy of Sciences, 100049, Beijing, China.
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3
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Míguez‐Lago S, Gliemann BD, Kivala M, Cid MM. A Chiral Molecular Cage Comprising Diethynylallenes and N-Heterotriangulenes for Enantioselective Recognition. Chemistry 2021; 27:13352-13357. [PMID: 34374138 PMCID: PMC8518621 DOI: 10.1002/chem.202101801] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Indexed: 12/05/2022]
Abstract
Chirality, a characteristic tool of molecular recognition in nature, is often a complement of redox active systems. Scientists, in their eagerness to mimic such sophistication, have designed numerous chiral systems based on molecular entities with cavities, such as macrocycles and cages. In an attempt to combine chirality and redox-active species, in this contribution we report the synthesis and detailed characterization of a chiral shape-persistent molecular cage based on the combination of enantiopure diethynylallenes and electron-rich bridged triarylamines, also known as N-heterotriangulenes. Its ability for chiral recognition in solution was revealed through UV/vis titrations with enantiopure helicenes.
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Affiliation(s)
- Sandra Míguez‐Lago
- Departamento de Química OrgánicaUniversidade de VigoCampus Lagoas-Marcosende36310VigoSpain
- Department of Chemistry and PharmacyChair of Organic Chemistry IFriedrich-Alexander-Universität Erlangen-NürnbergNikolaus-Fiebiger-Str. 1091058ErlangenGermany
| | - Bettina D. Gliemann
- Department of Chemistry and PharmacyChair of Organic Chemistry IFriedrich-Alexander-Universität Erlangen-NürnbergNikolaus-Fiebiger-Str. 1091058ErlangenGermany
| | - Milan Kivala
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 27069120HeidelbergGermany
- Centre for Advanced MaterialsRuprecht-Karls-Universität HeidelbergIm Neuenheimer Feld 22569120HeidelbergGermany
| | - María Magdalena Cid
- Departamento de Química OrgánicaUniversidade de VigoCampus Lagoas-Marcosende36310VigoSpain
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4
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Abstract
Buckybowls have concave and convex surfaces with distinct π-electron cloud distribution, and consequently they show unique structural and electronic features as compared to planar aromatic polycycles. Doping the π-framework of buckybowls with heteroatoms is an efficient scheme to tailor inherent properties, because the nature of heteroatoms plays a pivotal role in the structural and electronic characteristics of the resulting hetera-buckybowls. The design, synthesis, and derivatization of hetera-buckybowls open an avenue for obtaining fascinating organic entities not only of fundamental importance but also of promising applications in optoelectronics. In this review, we summarize the advances in hetera-buckybowl chemistry, particularly the synthetic strategies toward these scaffolds.
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Affiliation(s)
- Wenbo Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, Gansu Province, China.
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5
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Zhang S, Cheng L, Chen C, Li J, Li X, Zhang M, Cheng F, Xiao X, Deng K, Zeng Q. Controlled Construction of an Exquisite Three-Component Co-assembly Supramolecular Structure at the Liquid-Solid Interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:2153-2160. [PMID: 33527825 DOI: 10.1021/acs.langmuir.0c03387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A three-component supramolecular co-assembly structure formed at the liquid-solid interface by employing a shape-persistent π-conjugated macrocycle (16mer) and two guest molecules (COR and C60) is demonstrated. Scanning tunneling microscopy (STM) observations revealed that 16mer can serve as a versatile host molecule that can co-assemble with both COR and C60 guest molecules to form stable two-component structures, where the COR guest molecule filled in the gap between the side chains of adjacent 16mer molecules, and the C60 guest molecule entered the inner cavity of 16mer. It was found that the adding sequence of COR and C60 guest molecules is crucial to the resulting co-adsorption structure in the three-component system. To obtain the intriguing 16mer-COR-C60 three-component co-assembly structure, the 16mer and COR two-component co-assembly structure should first be constructed on a HOPG surface, followed by addition of C60. Based on the analysis of the STM results and the density functional theory (DFT) calculations, the formation mechanism of the assembled structures was revealed.
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Affiliation(s)
- Siqi Zhang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Linxiu Cheng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Chen Chen
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Jianqiao Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Xiaokang Li
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Min Zhang
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Faliang Cheng
- Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, P. R. China
| | - Xunwen Xiao
- School of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo 315211, P. R. China
| | - Ke Deng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
| | - Qingdao Zeng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), Beijing 100190, P. R. China
- Center of Materials Science and Optoelectonics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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6
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Li M, Hua B, Liang H, Liu J, Shao L, Huang F. Supramolecular Tessellations via Pillar[ n]arenes-Based Exo-Wall Interactions. J Am Chem Soc 2020; 142:20892-20901. [PMID: 33242958 DOI: 10.1021/jacs.0c11037] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Supramolecular tessellation is a newly emerging and promising area in supramolecular chemistry because of its unique structural aesthetics and potential applications. Herein, we investigate the "exo-wall" interactions of pillar[n]arenes and prepare fantastic hexagonal supramolecular tessellations based on perethylated pillar[6]arenes (EtP6) with electron-deficient molecules 1,5-difluoro-2,4-dinitrobenzene (DFN) and tetrafluoro-1,4-benzoquinone (TFB). The crystal structures clearly confirm that EtP6 can form highly ordered hexagonal 2D tiling patterns with DFN/TFB as linkers through cocrystallization. Moreover, the self-assembled packing arrangements in the ultimate cocrystal superstructures can be adjusted under different crystallization conditions. This work not only explores the rare exo-wall interactions based on pillar[n]arenes but also reports the fabrication of supramolecular tessellations based on pillararenes for the first time, showing a new perspective in supramolecular chemistry.
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Affiliation(s)
- Ming Li
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Bin Hua
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Haozhong Liang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Jiyong Liu
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Li Shao
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Feihe Huang
- State Key Laboratory of Chemical Engineering, Center for Chemistry of High-Performance & Novel Materials, Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China.,Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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7
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Advances in self-assembly and regulation of aromatic carboxylic acid derivatives at HOPG interface. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2019.04.032] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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8
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Iritani K, Takeda H, Kather M, Yokoi M, Moeglen M, Ikeda M, Otsubo Y, Ozawa Y, Tahara K, Hirose K, De Feyter S, Tobe Y. Electrostatically Driven Guest Binding in Self-Assembled Molecular Network of Hexagonal Pyridine Macrocycle at the Liquid/Solid Interface: Symmetry Breaking Induced by Coadsorbed Solvent Molecules. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:15051-15062. [PMID: 31671263 DOI: 10.1021/acs.langmuir.9b02748] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We present here the construction of a self-assembled two-dimensional network at the liquid/solid interface using a hexagonal pyridine macrocycle which binds an organic cation in its intrinsic porous space by electrostatic interactions. For this purpose, a hexagonal pyridinylene-butadiynylene macrocycle (PyBM) having six octyloxymethyl groups, PyBM-C8, was synthesized. As guests, tropylium (Tr) tetrafluoroborate and trioxatriangulenium (TOTA) hexafluorophosphate were used. In this study, we focused on (i) the network patterns of PyBM-C8 which change in response to its concentration and (ii) the position of the guest immobilized in the porous space of the macrocycle. Scanning tunneling microscopy (STM) observations at the interface of 1,2,4-trichlorobenzene (TCB) and highly oriented pyrolytic graphite (HOPG) revealed that PyBM-C8 formed four different polymorphs, oblique, loose hexagonal, linear, and rectangular, depending on the solute concentration and annealing treatment. Solvent TCB molecules are likely coadsorbed to not only the intrinsically porous space of PyBM-C8 (internal TCB) but also the space outside of the macrocycle between its alkyl chains (external TCB) in most of the cases. Upon adding the guest cation, whereas small Tr was not visualized in the pore due to size mismatching, larger TOTA was clearly observed in each pore. In addition, based on high-resolution STM images of the rhombus packing pattern of PyBM-C8, we revealed experimentally that TOTA was placed at an off-center position of the deformed hexagonal macrocyclic core in the rhombus pattern. On the basis of the molecular mechanics calculations, we hypothesize that the off-center location of TOTA is due to deformation of the hexagonal macrocycle through interaction with two external TCB molecules located at opposite edges of the macrocyclic core. Symmetry breaking of the macrocyclic host framework induced by coadsorbed surrounding solvent molecules thus plays a significant role in host-guest complexation at the liquid/solid interface.
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Affiliation(s)
- Kohei Iritani
- Department of Applied Chemistry, School of Engineering , Tokyo University of Technology , Hachioji, Tokyo 192-0982 , Japan
| | | | | | | | | | | | | | - Yu Ozawa
- Department of Applied Chemistry, School of Science and Technology , Meiji University , Kawasaki , Kanagawa 214-8571 , Japan
| | - Kazukuni Tahara
- Department of Applied Chemistry, School of Science and Technology , Meiji University , Kawasaki , Kanagawa 214-8571 , Japan
| | | | - Steven De Feyter
- Department of Chemistry , KU Leuven , Celestijnenlaan 200F , 3001 Leuven , Belgium
| | - Yoshito Tobe
- The Institute of Scientific and Industrial Research , Osaka University , 8-1, Mihogaoka , Ibaraki Osaka 567-0047 , Japan
- Department of Applied Chemistry , National Chiao Tung University , 1001 Ta-Hsueh Road , Hsinchu 30010 Taiwan
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9
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Schaub TA, Padberg K, Kivala M. Bridged triarylboranes, ‐silanes, ‐amines, and ‐phosphines as minimalistic heteroatom‐containing polycyclic aromatic hydrocarbons: Progress and challenges. J PHYS ORG CHEM 2019. [DOI: 10.1002/poc.4022] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Tobias A. Schaub
- Organisch‐Chemisches InstitutRuprecht‐Karls‐Universität Heidelberg Heidelberg Germany
| | - Kevin Padberg
- Department of Chemistry and PharmacyUniversität Erlangen‐Nürnberg Erlangen Germany
| | - Milan Kivala
- Organisch‐Chemisches InstitutRuprecht‐Karls‐Universität Heidelberg Heidelberg Germany
- Centre for Advanced MaterialsRuprecht‐Karls‐Universität Heidelberg Heidelberg Germany
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10
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Theoretical investigation of metalated and unmetalated pyrphyrins immobilized on Ag(111) surface. J INCL PHENOM MACRO 2019. [DOI: 10.1007/s10847-019-00942-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Fang Y, Cibian M, Hanan GS, Perepichka DF, De Feyter S, Cuccia LA, Ivasenko O. Alkyl chain length effects on double-deck assembly at a liquid/solid interface. NANOSCALE 2018; 10:14993-15002. [PMID: 30052249 DOI: 10.1039/c8nr04220a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Controlled double-deck packing is an appealing means to expand upon conventional 2D self-assembly which is critical in crystal engineering, yet it is rare and poorly understood. Herein, we report the first systematic study of double-deck assembly in a series of alkylated aminoquinone derivatives at the liquid-solid interface. The competition between the fraction of alkyl chains adsorbed on the surface and the optimal conformation of the alkyl chains near the head group leads to a stepwise structural transformation ranging from complete double-deck packing to complete monolayer packing. Alkyl chains on the bottom or top layer of the double-deck assemblies were selectively visualized by carefully tuning the scanning tunneling microscopy settings. A method to easily identify mirror image domains was discovered based on the coincidence of domain boundaries with a graphite main axis. The effect of molecular symmetry and metal complexation on the formation of the double-deck assembly was also explored. Based on 2D crystal engineering principles, this bottom-up double-deck assembly can potentially provide an essential toehold for constructing precise 3D hierarchical structures.
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Affiliation(s)
- Yuan Fang
- Department of Chemistry and Biochemistry, Concordia University, 7141 Sherbrooke St. W., Montreal, Québec H4B 1R6, Canada.
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12
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Teyssandier J, Feyter SD, Mali KS. Host-guest chemistry in two-dimensional supramolecular networks. Chem Commun (Camb) 2018; 52:11465-11487. [PMID: 27709179 DOI: 10.1039/c6cc05256h] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Nanoporous supramolecular networks physisorbed on solid surfaces have been extensively used to immobilize a variety of guest molecules. Host-guest chemistry in such two-dimensional (2D) porous networks is a rapidly expanding field due to potential applications in separation technology, catalysis and nanoscale patterning. Diverse structural topologies with high crystallinity have been obtained to capture molecular guests of different sizes and shapes. A range of non-covalent forces such as hydrogen bonds, van der Waals interactions, coordinate bonds have been employed to assemble the host networks. Recent years have witnessed a surge in the activity in this field with the implementation of rational design strategies for realizing controlled and selective guest capture. In this feature article, we review the development in the field of surface-supported host-guest chemistry as studied by scanning tunneling microscopy (STM). Typical host-guest architectures studied on solid surfaces, both under ambient conditions at the solution-solid interface as well as those formed at the ultrahigh vacuum (UHV)-solid interface, are described. We focus on isoreticular host networks, hosts functionalized pores and dynamic host-guest systems that respond to external stimuli.
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Affiliation(s)
- Joan Teyssandier
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven-University of Leuven, Celestijnenlaan 200F, B3001 Leuven, Belgium.
| | - Steven De Feyter
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven-University of Leuven, Celestijnenlaan 200F, B3001 Leuven, Belgium.
| | - Kunal S Mali
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven-University of Leuven, Celestijnenlaan 200F, B3001 Leuven, Belgium.
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13
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Iritani K, Ikeda M, Yang A, Tahara K, Hirose K, Moore JS, Tobe Y. Hexagonal Molecular Tiling by Hexagonal Macrocycles at the Liquid/Solid Interface: Structural Effects on Packing Geometry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:12453-12462. [PMID: 28968503 DOI: 10.1021/acs.langmuir.7b03007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We present here hexagonal tiling using hexagonal phenylene-ethynylene and phenylene-butadiynylene macrocycles attached by alkyl ester groups, PEM-C6 and PBM-C8, respectively, or triethylene glycol ester groups, PEM-TEG and PBM-TEG, respectively, at each vertex of the macrocyclic periphery at the liquid/solid interface. In this study, we focused on the effects of macrocyclic core size and the chemical properties of side chains attached to macrocyclic cores as well as solute concentrations on the hexagonal geometry of self-assembled monolayers. STM observations at the 1,2,4-trichrolobenzene/graphite interface revealed that PEM-C6 formed a honeycomb structure by van der Waals interactions between the interdigitated alkyl chains. However, upon increasing solute concentration, it changed to more dense hexagonal structure (tentatively called loose hexagonal structure I). In contrast, PBM-C8 formed loose hexagonal structure II of a slightly different packing mode at low concentration, while at high concentration it formed a high-density hexagonal structure in which alkyl chains are not adsorbed on the surface (dense hexagonal structure). In the dense hexagonal structure, macrocyclic cores are linked by hydrogen bonds between the ester carbonyl oxygen and the aromatic hydrogen atoms of the neighboring macrocycles. The packing geometries of loose hexagonal structures of PEM-C6 and PBM-C8 are different due to the different distance between the attachment of the alkyl ester groups which are located in confined space. On the other hand, PEM-TEG and PBM-TEG formed dense hexagonal structures, similar to PBM-C8 at high concentration, with their TEG units not adsorbed on the surface.
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Affiliation(s)
- Kohei Iritani
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
| | - Motoki Ikeda
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
| | - Anna Yang
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Kazukuni Tahara
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
- Department of Applied Chemistry, School of Science and Technology, Meiji University , Kawasaki, Kanagawa 214-8571, Japan
| | - Keiji Hirose
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
| | - Jeffrey S Moore
- Department of Chemistry and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States
| | - Yoshito Tobe
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
- The Institute of Scientific and Industrial Research, Osaka University , 8-1, Mihogaoka, Ibaraki Osaka 567-0047, Japan
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14
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Karamzadeh B, Eaton T, Torres DM, Cebula I, Mayor M, Buck M. Sequential nested assembly at the liquid/solid interface. Faraday Discuss 2017; 204:173-190. [PMID: 28782775 DOI: 10.1039/c7fd00115k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Studying the stepwise assembly of a four component hybrid structure on Au(111)/mica, the pores of a hydrogen bonded bimolecular network of 3,4,9,10-perylenetetracarboxylic diimide (PTCDI) and 1,3,5-triazine-2,4,6-triamine (melamine) were partitioned by three and four-armed molecules based on oligo([biphenyl]-4-ylethynyl)benzene, followed by the templated adsorption of either C60 fullerene or adamantane thiol molecules. The characterisation by ambient scanning tunneling microscopy (STM) reveals that the pore modifiers exhibit dynamics which pronouncedly depend on the molecular structure. The three-armed molecule 1,3,5-tris([1,1'-biphenyl]-4-ylethynyl)benzene (3BPEB) switches between two symmetry equivalent configurations on a time scale fast compared to the temporal resolution of the STM. Derivatisation of 3BPEB by hydroxyl groups substantially reduces the switching rate. For the four-armed molecule configurational changes are observed only occasionally. The observation of isolated fullerenes and small clusters of adamantane thiol molecules, which are arranged in a characteristic fashion, reveals the templating effect of the trimolecular supramolecular network. However, the fraction of compartments filled by guest molecules is significantly below one for both the thermodynamically controlled adsorption of C60 and the kinetically controlled adsorption of the thiol with the latter causing partial removal of the pore modifier. The experiments, on the one hand, demonstrate the feasibility of templating by nested assembly but, on the other hand, also pinpoint the requirement for the energy landscape to be tolerant to variations in the assembly process.
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Affiliation(s)
- Baharan Karamzadeh
- EastCHEM School of Chemistry, University of St Andrews, North Haugh, St Andrews, UK.
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15
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Iritani K, Tahara K, De Feyter S, Tobe Y. Host-Guest Chemistry in Integrated Porous Space Formed by Molecular Self-Assembly at Liquid-Solid Interfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:4601-4618. [PMID: 28206764 DOI: 10.1021/acs.langmuir.7b00083] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Host-guest chemistry in two-dimensional (2D) space, that is, physisorbed monolayers of a single atom or a single molecular thickness on surfaces, has become a subject of intense current interest because of perspectives for various applications in molecular-scale electronics, selective sensors, and tailored catalysis. Scanning tunneling microscopy has been used as a powerful tool for the visualization of molecules in real space on a conducting substrate surface. For more than a decade, we have been investigating the self-assembly of a series of triangle-shaped phenylene-ethynylene macrocycles called dehydrobenzo[12]annulenes (DBAs). These molecules are substituted with six alkyl chains and are capable of forming hexagonal porous 2D molecular networks via van der Waals interactions between interdigitated alkyl chains at the interface of organic solvents and graphite. The dimension of the nanoporous space or nanowell formed by the self-assembly of DBAs can be controlled from 1.6 to 4.7 nm by simply changing the alkyl chain length from C6 to C20. Single molecules as well as homoclusters and heteroclusters are capable of coadsorbing within the host matrix using shape- and size-complementarity principles. Moreover, on the basis of the versatility of the DBA molecules that allows chemical modification of the alkyl chain terminals, we were able to decorate the interior space of the nanoporous networks with functional groups such as azobenzenedicarboxylic acid for photoresponsive guest adsorption/desorption or fluoroalkanes and tetraethylene glycol groups for selective guest binding by electrostatic interactions and zinc-porphyrin units for complexation with a guest by charge-transfer interactions. In this Feature Article, we describe the general aspects of molecular self-assembly at liquid/solid interfaces, followed by the formation of programmed porous molecular networks using rationally designed molecular building blocks. We focus on our own work involving host-guest chemistry in integrated nanoporous space that is modified for specific purposes.
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Affiliation(s)
- Kohei Iritani
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
| | - Kazukuni Tahara
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
- Department of Applied Chemistry, School of Science and Technology, Meiji University , Kawasaki, Kanagawa 214-8571, Japan
| | - Steven De Feyter
- Department of Chemistry, Division of Molecular Imaging and Photonics, KU Leuven - University of Leuven , Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Yoshito Tobe
- Division of Frontier Materials Science, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
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16
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Bouju X, Mattioli C, Franc G, Pujol A, Gourdon A. Bicomponent Supramolecular Architectures at the Vacuum–Solid Interface. Chem Rev 2017; 117:1407-1444. [DOI: 10.1021/acs.chemrev.6b00389] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Xavier Bouju
- CEMES-CNRS, 29 Rue J. Marvig, 31055 Toulouse, France
| | | | - Grégory Franc
- CEMES-CNRS, 29 Rue J. Marvig, 31055 Toulouse, France
| | - Adeline Pujol
- Université de Toulouse, UPS, CNRS, CEMES, 118 route de Narbonne, 31062 Toulouse, France
| | - André Gourdon
- CEMES-CNRS, 29 Rue J. Marvig, 31055 Toulouse, France
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17
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Velpula G, Takeda T, Adisoejoso J, Inukai K, Tahara K, Mali KS, Tobe Y, De Feyter S. On the formation of concentric 2D multicomponent assemblies at the solution–solid interface. Chem Commun (Camb) 2017; 53:1108-1111. [DOI: 10.1039/c6cc09188a] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
We report on the design and fabrication of a four-component supramolecular network consisting of three concentric shells around a central guest.
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Affiliation(s)
- Gangamallaiah Velpula
- Division of Molecular Imaging and Photonics
- Department of Chemistry
- KU Leuven-University of Leuven
- B-3001 Leuven
- Belgium
| | - Takashi Takeda
- Division of Frontier Materials Science
- Graduate School of Engineering Science
- Osaka University
- Toyonaka
- Japan
| | - Jinne Adisoejoso
- Division of Molecular Imaging and Photonics
- Department of Chemistry
- KU Leuven-University of Leuven
- B-3001 Leuven
- Belgium
| | - Koji Inukai
- Division of Frontier Materials Science
- Graduate School of Engineering Science
- Osaka University
- Toyonaka
- Japan
| | - Kazukuni Tahara
- Division of Frontier Materials Science
- Graduate School of Engineering Science
- Osaka University
- Toyonaka
- Japan
| | - Kunal S. Mali
- Division of Molecular Imaging and Photonics
- Department of Chemistry
- KU Leuven-University of Leuven
- B-3001 Leuven
- Belgium
| | - Yoshito Tobe
- Division of Frontier Materials Science
- Graduate School of Engineering Science
- Osaka University
- Toyonaka
- Japan
| | - Steven De Feyter
- Division of Molecular Imaging and Photonics
- Department of Chemistry
- KU Leuven-University of Leuven
- B-3001 Leuven
- Belgium
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18
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Mali KS, Pearce N, De Feyter S, Champness NR. Frontiers of supramolecular chemistry at solid surfaces. Chem Soc Rev 2017; 46:2520-2542. [DOI: 10.1039/c7cs00113d] [Citation(s) in RCA: 168] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Supramolecular chemistry on solid surfaces represents an exciting field of research that continues to develop in new and unexpected directions.
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Affiliation(s)
- Kunal S. Mali
- Division of Molecular Imaging and Photonics
- Department of Chemistry
- KU Leuven – University of Leuven
- B3001 Leuven
- Belgium
| | | | - Steven De Feyter
- Division of Molecular Imaging and Photonics
- Department of Chemistry
- KU Leuven – University of Leuven
- B3001 Leuven
- Belgium
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19
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Dai H, Yi W, Deng K, Wang H, Zeng Q. Formation of Coronene Clusters in Concentration and Temperature Controlled Two-Dimensional Porous Network. ACS APPLIED MATERIALS & INTERFACES 2016; 8:21095-21100. [PMID: 27463768 DOI: 10.1021/acsami.6b06638] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this research, with the assistance of scanning tunneling microscopy (STM), we observed the two-dimensional (2D) self-assembly transition of a star-shaped oligofluorene derivative (StOF) from disordered structure to honeycomb network by adjusting StOF concentration in solution. By introducing guest molecules coronene (COR), we for the first time achieved novel triangle-shaped COR trimers on liquid/highly oriented pyrolytic graphite (HOPG) interface in both honeycomb network and the disordered structure. In thermal tests, the COR/StOF-disorder system underwent a structural conformation to form well-ordered ladder structures, while the COR/StOF-honeycomb system remained the perfect hexagonal network with COR trimers included in the cavities. Density functional theory (DFT) calculations have been employed to investigate the forming mechanism of the molecular nanoarrays. These studies are expected to enhance controlling on 2D self-assembly and provide a facial approach toward constructing on-surface molecular clusters.
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Affiliation(s)
- Hongliang Dai
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST) , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Wenjing Yi
- Engineering Research Center for Nanomaterials, Henan University , Kaifeng 475004, P. R. China
| | - Ke Deng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST) , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Hua Wang
- Engineering Research Center for Nanomaterials, Henan University , Kaifeng 475004, P. R. China
| | - Qingdao Zeng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST) , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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20
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Plas J, Ivasenko O, Martsinovich N, Lackinger M, De Feyter S. Nanopatterning of a covalent organic framework host-guest system. Chem Commun (Camb) 2016; 52:68-71. [PMID: 26514994 DOI: 10.1039/c5cc07557b] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have used a boroxine-based COF as a template for C60-fullerene self-assembly on graphite. Local removal of the COF by STM based nanomanipulation creates nanocorrals that may host other species.
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Affiliation(s)
- Jan Plas
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, 3001 Leuven, Belgium.
| | - Oleksandr Ivasenko
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, 3001 Leuven, Belgium.
| | | | - Markus Lackinger
- Deutsches Museum, Museumsinsel 1, 80538 Munich, Germany and Department of Physics Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Steven De Feyter
- Division of Molecular Imaging and Photonics, Department of Chemistry, KU Leuven, Celestijnenlaan 200 F, 3001 Leuven, Belgium.
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21
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Liu Y, Singharoy A, Mayne CG, Sengupta A, Raghavachari K, Schulten K, Flood AH. Flexibility Coexists with Shape-Persistence in Cyanostar Macrocycles. J Am Chem Soc 2016; 138:4843-4851. [PMID: 27014837 PMCID: PMC4957974 DOI: 10.1021/jacs.6b00712] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Shape-persistent macrocycles are attractive functional targets for synthesis, molecular recognition, and hierarchical self-assembly. Such macrocycles are noncollapsible and geometrically well-defined, and they are traditionally characterized by having repeat units and low conformational flexibility. Here, we find it necessary to refine these ideas in the face of highly flexible yet shape-persistent macrocycles. A molecule is shape-persistent if it has a small change in shape when perturbed by external stimuli (e.g., heat, light, and redox chemistry). In support of this idea, we provide the first examination of the relationships between a macrocycle's shape persistence, its conformational space, and the resulting functions. We do this with a star-shaped macrocycle called cyanostar that is flexible as well as being shape-persistent. We employed molecular dynamics (MD), density functional theory (DFT), and NMR experiments. Considering a thermal bath as a stimulus, we found a single macrocycle has 332 accessible conformers with olefins undergoing rapid interconversion by up-down and in-out motions on short time scales (0.2 ns). These many interconverting conformations classify single cyanostars as flexible. To determine and confirm that cyanostars are shape-persistent, we show that they have a high 87% shape similarity across these conformations. To further test the idea, we use the binding of diglyme to the single macrocycle as guest-induced stimulation. This guest has almost no effect on the conformational space. However, formation of a 2:1 sandwich complex involving two macrocycles enhances rigidity and dramatically shifts the conformer distribution toward perfect bowls. Overall, the present study expands the scope of shape-persistent macrocycles to include flexible macrocycles if, and only if, their conformers have similar shapes.
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Affiliation(s)
- Yun Liu
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN 47405, USA
| | - Abhishek Singharoy
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL 61801, USA
| | - Christopher G. Mayne
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL 61801, USA
| | - Arkajyoti Sengupta
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN 47405, USA
| | - Krishnan Raghavachari
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN 47405, USA
| | - Klaus Schulten
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, 405 North Mathews Avenue, Urbana, IL 61801, USA
- Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, IL 61801, USA
| | - Amar H. Flood
- Department of Chemistry, Indiana University, 800 E. Kirkwood Avenue, Bloomington, IN 47405, USA
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22
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Chang S, Liu R, Wang L, Li M, Deng K, Zheng Q, Zeng Q. Formation of Ordered Coronene Clusters in Template Utilizing the Structural Transformation of Hexaphenylbenzene Derivative Networks on Graphite Surface. ACS NANO 2016; 10:342-348. [PMID: 26645374 DOI: 10.1021/acsnano.5b06666] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In the present work, we report the fabrication of regular coronene (COR) clusters on surfaces in ambient conditions in the two-dimensional network formed by hexaphenylbenzene derivatives (HPB) via structural transformation. HPB could form a stable snowflake network structure on the highly oriented pyrolytic graphite surface at the air-solid interface. When COR molecules were introduced into the system, the HPB snowflake network could transform to honeycomb structures, and the COR heptamers were subsequently aggregated and entrapped into the cavity. Scanning tunneling microscopic was employed to monitor the assembly behavior of both HPB and HPB/COR at a submolecule scale level, and density functional theory calculations were utilized to reveal that the structural transformation and the entrapment are the energetically favorable. The pores formed from HPB might also give a clue to immobilizing some functional molecule clusters, like COR, to fabricate their ordered monolayer in ambient conditions, so as to obtain complex supramolecular surface structures.
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Affiliation(s)
- Shaoqing Chang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST) , Beijing 100190, P. R. China
| | - Runcong Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P. R. China
| | - Liancheng Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing, 100190, P. R. China
| | - Min Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P. R. China
| | - Ke Deng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST) , Beijing 100190, P. R. China
| | - Qiyu Zheng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences , Beijing, 100190, P. R. China
| | - Qingdao Zeng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST) , Beijing 100190, P. R. China
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23
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Zhao H, Song X, Aslan H, Liu B, Wang J, Wang L, Besenbacher F, Dong M. Self-assembly of hydrogen-bonded supramolecular complexes of nucleic-acid-base and fatty-acid at the liquid–solid interface. Phys Chem Chem Phys 2016; 18:14168-71. [DOI: 10.1039/c6cp00112b] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The interesting sandwich-like architectures were formed at the liquid–solid interface by using a binary system consisting of guanine and stearic acid.
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Affiliation(s)
- Huiling Zhao
- Interdisciplinary Nanoscience Center (iNANO)
- Center for DNA Nanotechnology (CDNA)
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | - Xin Song
- Interdisciplinary Nanoscience Center (iNANO)
- Center for DNA Nanotechnology (CDNA)
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | - Hüsnü Aslan
- Interdisciplinary Nanoscience Center (iNANO)
- Center for DNA Nanotechnology (CDNA)
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | - Bo Liu
- Institute of Photo-biophysics
- School of Physics and Electronics
- Henan University
- Kaifeng 475004
- China
| | - Jianguo Wang
- Interdisciplinary Nanoscience Center (iNANO)
- Center for DNA Nanotechnology (CDNA)
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | - Li Wang
- Department of Physics
- Nanchang University
- Nanchang 330031
- China
| | - Flemming Besenbacher
- Interdisciplinary Nanoscience Center (iNANO)
- Center for DNA Nanotechnology (CDNA)
- Aarhus University
- DK-8000 Aarhus C
- Denmark
| | - Mingdong Dong
- Interdisciplinary Nanoscience Center (iNANO)
- Center for DNA Nanotechnology (CDNA)
- Aarhus University
- DK-8000 Aarhus C
- Denmark
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24
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Yang Y, Zimmt MB. Shape-Directed Patterning and Surface Reaction of Tetra-diacetylene Monolayers: Formation of Linear and Two-Dimensional Grid Polydiacetylene Alternating Copolymers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:12408-12416. [PMID: 26509811 DOI: 10.1021/acs.langmuir.5b03295] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Side chains containing two diacetylene units spaced by an odd number of methylene units exhibit pronounced “bumps” composed of 0.3 nm steps, in opposite directions, at odd and even side-chain positions. In densely packed self-assembled monolayers, the bis-diacetylene bumps stack into each other, similar to the stacking of paper cups. Bis-diacetylene side chain structure and associated packing constraints can be tailored by altering the bump width, direction, side-chain location, and overall side-chain length as a means to direct the identities and alignments of adjacent molecules within monolayers. Scanning tunneling microscopy (STM) at the solution–HOPG interface confirms the high selectivity and fidelity with which bis-diacetylene bump stacking directs the packing of shape-complementary side chains within one-component monolayers and within two-component, 1-D self-patterned monolayers. Drop cast or moderately annealed monolayers of anthracenes bearing two bis-diacetylene side chains assemble single domains as large as 10(5) nm2. Light-induced cross-linking of two-component, 1-D patterned monolayers generates linear polydiacetylene alternating copolymers (A-B-)x and 2-D grid polydiacetylene alternating copolymers (A(-B-)(-B-)A(-B-)(-B-))x that covalently lock in monolayer structure and patterns.
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Affiliation(s)
- Yan Yang
- Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States
| | - Matthew B Zimmt
- Department of Chemistry, Brown University , Providence, Rhode Island 02912, United States
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25
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Gong Y, Zhang S, Geng Y, Niu C, Yin S, Zeng Q, Li M. Orthogonal Supramolecular Polymer Formation on Highly Oriented Pyrolytic Graphite (HOPG) Surfaces Characterized by Scanning Probe Microscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:11525-11531. [PMID: 26457462 DOI: 10.1021/acs.langmuir.5b02883] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Formation of an orthogonal supramolecular polymer on a highly oriented pyrolytic graphite (HOPG) surface was demonstrated for the first time by means of scanning probe microscopy (SPM). Atomic force microscopy (AFM) was employed to characterize the variation of both the thickness and the topography of the film formed from (1) monomer 1, (2) monomer 1/Zn(2+), and (3) monomer 1/Zn(2+)/cross-linker 2, respectively. Scanning tunneling microscopy (STM) was used to monitor the self-assembly behavior of monomer 1 itself, as well as 1/Zn(2+) ions binary system on graphite surface, further testifying for the formation of linear polymer via coordination interaction at the single molecule level. These results, given by the strong surface characterization tool of SPM, confirm the formation of the orthogonal polymer on the surface of graphite, which has great significance in regard to fabricating a complex superstructure on surfaces.
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Affiliation(s)
- Yongxiang Gong
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China
- College of Materials Science & Engineering, Heibei University of Science and Technology , Shijiazhuang, 050018, People's Republic of China
| | - Siqi Zhang
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology (NCNST) , Beijing 100190, People's Republic of China
| | - Yanfang Geng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology (NCNST) , Beijing 100190, People's Republic of China
| | - Chunmei Niu
- College of Materials Science & Engineering, Heibei University of Science and Technology , Shijiazhuang, 050018, People's Republic of China
| | - Shouchun Yin
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University , Hangzhou, 310036, People's Republic of China
| | - Qingdao Zeng
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology (NCNST) , Beijing 100190, People's Republic of China
| | - Min Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China
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26
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Frath D, Sakano T, Imaizumi Y, Yokoyama S, Hirose T, Matsuda K. Diarylethene Self-Assembled Monolayers: Cocrystallization and Mixing-Induced Cooperativity Highlighted by Scanning Tunneling Microscopy at the Liquid/Solid Interface. Chemistry 2015; 21:11350-8. [PMID: 26119457 DOI: 10.1002/chem.201500804] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Indexed: 11/06/2022]
Abstract
Stimulus control over 2D multicomponent molecular ordering on surfaces is a key technique for realizing advanced materials with stimuli-responsive surface properties. The formation of 2D molecular ordering along with photoisomerization was monitored by scanning tunneling microscopy at the octanoic acid/highly oriented pyrolytic graphite interface for a synthesized amide-containing diarylethene, which underwent photoisomerization between the open- and closed-ring isomers and also a side-reaction to give the annulated isomer. The nucleation (Kn) and elongation (Ke) equilibrium constants were determined by analysis of the concentration dependence of the surface coverage by using a cooperative model at the liquid/solid interface. It was found that the annulated isomer has a very large equilibrium constant, which explains the predominantly observed ordering of the annulated isomer. It was also found that the presence of the closed-ring isomer induces cooperativity into the formation of molecular ordering composed of the open-ring isomer. A quantitative analysis of the formation of ordering by using the cooperative model has provided a new view of the formation of 2D multicomponent molecular ordering.
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Affiliation(s)
- Denis Frath
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)
| | - Takeshi Sakano
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)
| | - Yohei Imaizumi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)
| | - Soichi Yokoyama
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)
| | - Takashi Hirose
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan)
| | - Kenji Matsuda
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510 (Japan).
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27
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Schwab MG, Takase M, Mavrinsky A, Pisula W, Feng X, Gámez JA, Thiel W, Mali KS, de Feyter S, Müllen K. Torands Revisited: Metal Sequestration and Self-Assembly of Cyclo-2,9-tris-1,10-phenanthroline Hexaaza Macrocycles. Chemistry 2015; 21:8426-34. [PMID: 25867924 DOI: 10.1002/chem.201406602] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Indexed: 11/08/2022]
Abstract
A series of novel toroidal cyclo-2,9-tris-1,10-phenanthroline macrocycles with an unusual hexaaza cavity are reported. Nickel-mediated Yamamoto aryl-aryl coupling was found to be a versatile tool for the cyclotrimerization of functionalized 1,10-phenathroline precursors. Due to the now improved processability, both liquid-crystalline behavior in the bulk phase and two-dimensional self-assembly at the molecular level could be studied, for the first time, for a torand system. The macrocycles exhibited a strong affinity for the complexation of different metal cations, as evidenced by MALDI-TOF analysis and spectroscopic methods. Experimental results were correlated to an extensive computational study of the cyclo-2,9-tris-1,10-phenanthroline cavity and its binding mode for metal cations. Due to the combination of several interesting features, toroidal macrocycles may find future applications in the field of ion and charge transport through molecular channels, as well as for chemical sensing and molecular writing in surface-confined monolayers under STM conditions.
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Affiliation(s)
- Matthias Georg Schwab
- Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz (Germany).,Present Address: BASF SE, Carl-Bosch-Straße 38, 67056 Ludwigshafen (Germany)
| | - Masayoshi Takase
- Department of Chemistry, Graduate School of Science and Engineering, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397 (Japan)
| | - Alexey Mavrinsky
- Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz (Germany)
| | - Wojciech Pisula
- Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz (Germany)
| | - Xinliang Feng
- Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz (Germany)
| | - José A Gámez
- Institute of Technical and Macromolecular Chemistry, Division of Technical Chemistry and Petrol Chemistry, RWTH Aachen University, Worringerweg 1, 52074 Aachen (Germany)
| | - Walter Thiel
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim (Germany)
| | - Kunal S Mali
- Katholieke Universiteit Leuven, Celestijnenlaan 200 F, 3001 Leuven (Belgium)
| | - Steven de Feyter
- Katholieke Universiteit Leuven, Celestijnenlaan 200 F, 3001 Leuven (Belgium)
| | - Klaus Müllen
- Max-Planck-Institut für Polymerforschung, Ackermannweg 10, 55128 Mainz (Germany).
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Kasperski A, Szabelski P. Theoretical Modeling of Surface Confined Chiral Nanoporous Networks: Cruciform Molecules as Versatile Building Blocks. Chirality 2015; 27:397-404. [PMID: 25728050 DOI: 10.1002/chir.22437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Accepted: 01/28/2015] [Indexed: 11/07/2022]
Abstract
Patterning of solid surfaces with functional organic molecules has been a convenient route to fabricate two-dimensional materials with programmed architecture and activities. One example is the chiral nanoporous networks that can be created via controlled self-assembly of star-shaped molecules under 2D confinement. In this contribution we use computer modeling to predict the formation of molecular networks in adsorbed overlayers comprising cruciform molecular building blocks equipped with discrete interaction centers. To that end, we employ the Monte Carlo simulation method combined with a coarse-grained representation of the adsorbed molecules which are treated as collections of interconnected segments. The interaction centers within the molecules are represented by active segments whose number and distribution are adjusted. Our particular focus is on those distributions that produce prochiral molecules able to occur in adsorbed configurations being mirror images of each other (surface enantiomers). We demonstrate that, depending on size, aspect ratio, and intramolecular distribution of active sites, the surface enantiomers can co-crystallize or segregate into extended homochiral domains with largely diversified nanosized cavities. The insights from our theoretical studies can be helpful in designing 2D chiral porous networks with potential applications in enantioselective adsorption and asymmetric heterogeneous catalysis.
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Affiliation(s)
- Adam Kasperski
- Department of Theoretical Chemistry, Maria-Curie Skłodowska University, Lublin, Poland
| | - Paweł Szabelski
- Department of Theoretical Chemistry, Maria-Curie Skłodowska University, Lublin, Poland
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