1
|
Nemoto R, Arafune R, Nakano S, Tsuchiizu M, Takagi N, Suizu R, Uchihashi T, Awaga K. Chiral Honeycomb Lattices of Nonplanar π-Conjugated Supramolecules with Protected Dirac and Flat Bands. ACS NANO 2024. [PMID: 38946088 DOI: 10.1021/acsnano.4c04496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/02/2024]
Abstract
The honeycomb lattice is a fundamental two-dimensional (2D) network that gives rise to surprisingly rich electronic properties. While its expansion to 2D supramolecular assembly is conceptually appealing, its realization is not straightforward because of weak intermolecular coupling and the strong influence of a supporting substrate. Here, we show that the application of a triptycene derivative with phenazine moieties, Trip-Phz, solves this problem due to its strong intermolecular π-π pancake bonding and nonplanar geometry. Our scanning tunneling microscopy (STM) measurements demonstrate that Trip-Phz molecules self-assemble on a Ag(111) surface to form chiral and commensurate honeycomb lattices. Electronically, the network can be viewed as a hybrid of honeycomb and kagome lattices. The Dirac and flat bands predicted by a simple tight-binding model are reproduced by total density functional theory (DFT) calculations, highlighting the protection of the molecular bands from the Ag(111) substrate. The present work offers a rational route for creating chiral 2D supramolecules that can simultaneously accommodate pristine Dirac and flat bands.
Collapse
Affiliation(s)
- Ryohei Nemoto
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1, Namiki , Tsukuba , Ibaraki305-0044, Japan
| | - Ryuichi Arafune
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1, Namiki , Tsukuba , Ibaraki305-0044, Japan
| | - Saya Nakano
- Department of Physics, Nara Women's University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Masahisa Tsuchiizu
- Department of Physics, Nara Women's University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Noriaki Takagi
- Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-nihonmatsu-cho , Sakyo-ku, Kyoto 606-8501, Japan
| | - Rie Suizu
- Department of Chemistry and IRCCS, Nagoya University, Furo-cho , Chikusa-ku, Nagoya 464-8602, Japan
- Japan Science and Technology Agency (JST), PRESTO, 4-1-8 Honcho , Kawaguchi , Saitama332-0012, Japan
| | - Takashi Uchihashi
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1, Namiki , Tsukuba , Ibaraki305-0044, Japan
- Graduate School of Science, Hokkaido University, Kita-10 Nishi-8 . Kita-ku, Sapporo 060-0810, Japan
| | - Kunio Awaga
- Department of Chemistry and IRCCS, Nagoya University, Furo-cho , Chikusa-ku, Nagoya 464-8602, Japan
| |
Collapse
|
2
|
Xue R, Jiang W, He X, Xiong H, Xie G, Nie Z. The Adsorption Mechanisms of SF 6-Decomposed Species on Tc- and Ru-Embedded Phthalocyanine Surfaces: A Density Functional Theory Study. Molecules 2023; 28:7137. [PMID: 37894617 PMCID: PMC10608908 DOI: 10.3390/molecules28207137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/18/2023] [Accepted: 10/02/2023] [Indexed: 10/29/2023] Open
Abstract
Designing high-performance materials for the detection or removal of toxic decomposition gases of sulfur hexafluoride is crucial for both environmental monitoring and human health preservation. Based on first-principles calculations, the adsorption performance and gas-sensing properties of unsubstituted phthalocyanine (H2Pc) and H2Pc doped with 4d transition metal atoms (TM = Tc and Ru) towards five characteristic decomposition components (HF, H2S, SO2, SOF2, and SO2F2) were simulated. The findings indicate that both the TcPc and RuPc monolayers are thermodynamically and dynamically stable. The analysis of the adsorption energy indicates that H2S, SO2, SOF2, and SO2F2 underwent chemisorption on the TcPc monolayer. Conversely, the HF molecules were physisorbed through interactions with H atoms. The chemical adsorption of H2S, SO2, and SOF2 occurred on the RuPc monolayer, while the physical adsorption of HF and SO2F2 molecules was observed. Moreover, the microcosmic mechanism of the gas-adsorbent interaction was elucidated by analyzing the charge density differences, electron density distributions, Hirshfeld charges, and density of states. The TcPc and RuPc monolayers exhibited excellent sensitivity towards H2S, SO2, and SOF2, as evidenced by the substantial alterations in the band gaps and work functions of the TcPc and RuPc nanosheets. Our calculations hold significant value for exploring the potential chemical sensing applications of TcPc and RuPc monolayers in gas sensing, with a specific focus on detecting sulfur hexafluoride.
Collapse
Affiliation(s)
- Rou Xue
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China; (R.X.); (X.H.)
| | - Wen Jiang
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China; (R.X.); (X.H.)
| | - Xing He
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China; (R.X.); (X.H.)
| | - Huihui Xiong
- School of Metallurgy Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;
| | - Gang Xie
- Kunming Metallurgical Research Institute Co., Ltd., Kunming 650031, China;
| | - Zhifeng Nie
- Yunnan Key Laboratory of Metal-Organic Molecular Materials and Device, School of Chemistry and Chemical Engineering, Kunming University, Kunming 650214, China; (R.X.); (X.H.)
| |
Collapse
|
3
|
Timmer A, Mönig H, Uphoff M, Díaz Arado O, Amirjalayer S, Fuchs H. Site-Specific Adsorption of Aromatic Molecules on a Metal/Metal Oxide Phase Boundary. NANO LETTERS 2018; 18:4123-4129. [PMID: 29878787 DOI: 10.1021/acs.nanolett.8b00855] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nanostructured surfaces are ideal templates to control the self-assembly of molecular structures toward well-defined functional materials. To understand the initial adsorption process, we have investigated the arrangement and configuration of aromatic hydrocarbon molecules on nanostructured substrates composed of an alternating arrangement of Cu(110) and oxygen-reconstructed stripes. Scanning tunneling microscopy reveals a preferential adsorption of molecules at oxide phase boundaries. Noncontact atomic force microscopy experiments provide a detailed insight into the preferred adsorption site. By combining submolecular resolution imaging with density functional theory calculations, the interaction of the molecule with the phase boundary was elucidated excluding a classical hydrogen bonding. Instead, a complex balance of different interactions is revealed. Our results provide an atomistic picture for the driving forces of the adsorption process. This comprehensive understanding enables developing strategies for the bottom-up growth of functional molecular systems using nanotemplates.
Collapse
Affiliation(s)
- Alexander Timmer
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Strasse 10 , 48149 Münster , Germany
- Center for Nanotechnology (CeNTech) , Heisenbergstrasse 11 , 48149 Münster , Germany
| | - Harry Mönig
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Strasse 10 , 48149 Münster , Germany
- Center for Nanotechnology (CeNTech) , Heisenbergstrasse 11 , 48149 Münster , Germany
| | - Martin Uphoff
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Strasse 10 , 48149 Münster , Germany
| | - Oscar Díaz Arado
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Strasse 10 , 48149 Münster , Germany
- Center for Nanotechnology (CeNTech) , Heisenbergstrasse 11 , 48149 Münster , Germany
| | - Saeed Amirjalayer
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Strasse 10 , 48149 Münster , Germany
- Center for Nanotechnology (CeNTech) , Heisenbergstrasse 11 , 48149 Münster , Germany
- Center for Multiscale Theory and Computation , Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Straße 10 , 48149 Münster , Germany
| | - Harald Fuchs
- Physikalisches Institut, Westfälische Wilhelms-Universität Münster , Wilhelm-Klemm-Strasse 10 , 48149 Münster , Germany
- Center for Nanotechnology (CeNTech) , Heisenbergstrasse 11 , 48149 Münster , Germany
- Institut für Nanotechnology, KIT , 76344 Karlsruhe , Germany
| |
Collapse
|
4
|
Quinn T, Choudhury P. Direct oxidation of methane to methanol on single-site copper-oxo species of copper porphyrin functionalized graphene: A DFT study. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.01.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
5
|
Ziani A, Shinagawa T, Stegenburga L, Takanabe K. Generation of Transparent Oxygen Evolution Electrode Consisting of Regularly Ordered Nanoparticles from Self-Assembly Cobalt Phthalocyanine as a Template. ACS APPLIED MATERIALS & INTERFACES 2016; 8:32376-32384. [PMID: 27813407 DOI: 10.1021/acsami.6b12006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The decoration of (photo)electrodes for efficient photoresponse requires the use of electrocatalysts with good dispersion and high transparency for efficient light absorption by the photoelectrode. As a result of the ease of thermal evaporation and particulate self-assembly growth, the phthalocyanine molecular species can be uniformly deposited layer-by-layer on the surface of substrates. This structure can be used as a template to achieve a tunable amount of catalysts, high dispersion of the nanoparticles, and transparency of the catalysts. In this study, we present a systematic study of the structural and optical properties, surface morphologies, and electrochemical oxygen evolution reaction (OER) performance of cobalt oxide prepared from a phthalocyanine metal precursor. Cobalt phthalocyanine (CoPc) films with different thicknesses were deposited by thermal evaporation on different substrates. The films were annealed at 400 °C in air to form a material with the cobalt oxide phase. The final Co oxide catalysts exhibit high transparency after thermal treatment. Their OER measurements demonstrate well expected mass activity for OER. Thermally evaporated and treated transition metal oxide nanoparticles are attractive for the functionalization of (photo)anodes for water oxidation.
Collapse
Affiliation(s)
- Ahmed Ziani
- KAUST Catalysis Center (KCC) and Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Saudi Arabia
| | - Tatsuya Shinagawa
- KAUST Catalysis Center (KCC) and Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Saudi Arabia
| | - Liga Stegenburga
- KAUST Catalysis Center (KCC) and Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Saudi Arabia
| | - Kazuhiro Takanabe
- KAUST Catalysis Center (KCC) and Physical Sciences and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900, Saudi Arabia
| |
Collapse
|
6
|
Annese E, ViolBarbosa CE, Rossi G, Fujii J. CoPc 2D and 1D Arrangement on a Ferromagnetic Surface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:5300-5305. [PMID: 27191039 DOI: 10.1021/acs.langmuir.6b01249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We investigated the growth and electronic properties of Co-phthalocyanine (CoPc) molecule deposited on iron film with different structures (pseudomorph-fcc and bcc) and on iron nanowires by scanning tunnelling microscopy and X-ray absorption spectroscopy (XAS). CoPc molecules self-assemble in a two-dimensional (2D) arrangement with the molecular plane parallel to the iron surfaces, and the local order is lost after the first layer. The molecule-ferromagnet interaction causes the broadening of Co and N unoccupied molecular states as well as different electronic distribution of N states as a function of the atomic structure of iron surface. The ferromagnetic coupling between the molecule and the iron film is dominated by the electronic interaction between Co and the first Fe layer. CoPc 2D arrangement turns into 1D by using as a template the iron nanowire grown on a facet surface of oxidized Cu(332) surface. CoPc molecules interact weakly with the iron nanowires manifesting a substantial Co 3dz spectral feature in XAS spectrum and the possibility of a magnetic interaction between Co moment and iron nanowires. Both CoPc 2D and 1D arrangements can open up new interesting scenarios to tune the magnetic properties of hybrid interfaces involving metallorganic molecules.
Collapse
Affiliation(s)
- Emilia Annese
- Department of Physics, Università degli Studi Modena e Reggio Emilia , via Campi 213/A, I-41100 Modena, Italy
- TASC Laboratory, IOM-CNR , SS 14, km 163.5, I-34149 Trieste, Italy
| | | | - Giorgio Rossi
- TASC Laboratory, IOM-CNR , SS 14, km 163.5, I-34149 Trieste, Italy
- Dipartimento di Fisica, Università degli studi di Milano , Via Celoria 16, 20133 Milano, Italy
| | - Jun Fujii
- TASC Laboratory, IOM-CNR , SS 14, km 163.5, I-34149 Trieste, Italy
| |
Collapse
|
7
|
Yamagishi Y, Nakashima S, Oiso K, Yamada TK. Recovery of nanomolecular electronic states from tunneling spectroscopy: LDOS of low-dimensional phthalocyanine molecular structures on Cu(111). NANOTECHNOLOGY 2013; 24:395704. [PMID: 24008566 DOI: 10.1088/0957-4484/24/39/395704] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Organic nanomolecules have become one of the most attractive materials for new nanoelectronics devices. Understanding of the electronic density of states around the Fermi energy of low-dimensional molecules is crucial in designing the electronic properties of molecular devices. The low dimensionality of nanomolecules results in new electronic properties owing to their unique symmetry. Scanning tunneling spectroscopy is one of the most effective techniques for studying the electronic states of nanomolecules, particularly near the Fermi energy (±1.5 eV), whereas these molecular electronic states are frequently buried by the tunneling probability background in tunneling spectroscopy, resulting in incorrect determination of the molecular electronic states. Here, we demonstrate how to recover nanomolecular electronic states from dI/dV curves obtained by tunneling spectroscopy. Precise local density of states (LDOS) peaks for low-dimensional nanostructures (monolayer ultrathin films, one-dimensional chains, and single molecules) of phthalocyanine (H2Pc) molecules grown on noble fcc-Cu(111) were obtained.
Collapse
Affiliation(s)
- Y Yamagishi
- Graduate School of Advanced Integration Science, Chiba University, 1-33, Yayoi-cho, Inage-ku, Chiba-shi 263-8522, Chiba, Japan
| | | | | | | |
Collapse
|
8
|
Bouju X, Chérioux F, Coget S, Rapenne G, Palmino F. Directional molecular sliding at room temperature on a silicon runway. NANOSCALE 2013; 5:7005-7010. [PMID: 23800961 DOI: 10.1039/c3nr01685d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The design of working nanovehicles is a key challenge for the development of new devices. In this context, 1D controlled sliding of molecules on a silicon-based surface is successfully achieved by using an optimized molecule-substrate pair. Even though the molecule and surface are compatible, the molecule-substrate interaction provides a 1D template effect to guide molecular sliding along a preferential surface orientation. Molecular motion is monitored by STM experiments under ultra-high vacuum at room temperature. Molecule-surface interactions are elucidated by semi-empirical calculations.
Collapse
Affiliation(s)
- Xavier Bouju
- CEMES-CNRS, NanoSciences Group, 29 rue Jeanne Marvig, BP 94347, F-31055 Toulouse Cedex 4, France.
| | | | | | | | | |
Collapse
|