1
|
Lin Y, Li J, Liang X, Hu T, Huang Z, Zhu Z, Diao M, Zhao X, Peng Z, Wang Y, Chen Q, Liu J, Wu K. Steering Electron-Induced Surface Reaction via a Molecular Assembly Approach. J Am Chem Soc 2024; 146:10150-10158. [PMID: 38557061 DOI: 10.1021/jacs.4c01623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
Electrons not only serve as a "reactant" in redox reactions but also play a role in "catalyzing" some chemical processes. Despite the significance and ubiquitousness of electron-induced chemistry, many related scientific issues still await further exploration, among which is the impact of molecular assembly. In this work, microscopic insights into the vital role of molecular assembly in tweaking the electron-induced surface chemistry are unfolded by combined scanning tunneling microscopy and density functional theory studies. It is shown that the selective dissociation of a C-Cl bond in 4,4″-dichloro-1,1':3',1''-terphenyl (DCTP) on Cu(111) can be efficiently triggered by an electron injection via the STM tip into the unoccupied molecular orbital. The DCTP molecules are embedded in different assembly structures, including its self-assembly and coassemblies with Br adatoms. The energy threshold for the C-Cl bond cleavage increases as more Br adatoms stay close to the molecule, indicative of the sensitive response of the electron-induced surface reactivity of the C-Cl bond to the subtle change in the molecular assembly. Such a phenomenon is rationalized by the energy shift of the involved unoccupied molecular orbital of DCTP that is embedded in different assemblies. These findings shed new light on the tuning effect of molecular assembly on electron-induced reactions and introduce an efficient approach to precisely steer surface chemistry.
Collapse
Affiliation(s)
- Yuxuan Lin
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Jie Li
- Center for Carbon-based Electronics and Key Laboratory for the Physics and Chemistry of Nanodevices, School of Electronics, Peking University, Beijing 100871, China
| | - Xiaoyang Liang
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Ting Hu
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhichao Huang
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhen Zhu
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Mengxiao Diao
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xinwei Zhao
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Zhantao Peng
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Yongfeng Wang
- Center for Carbon-based Electronics and Key Laboratory for the Physics and Chemistry of Nanodevices, School of Electronics, Peking University, Beijing 100871, China
| | - Qiwei Chen
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Jing Liu
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Kai Wu
- BNLMS, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| |
Collapse
|
2
|
Meng X, Möller J, Menchón RE, Weismann A, Sánchez-Portal D, Garcia-Lekue A, Herges R, Berndt R. Kondo Effect of Co-Porphyrin: Remarkable Sensitivity to Adsorption Sites and Orientations. NANO LETTERS 2024; 24:180-186. [PMID: 38150551 DOI: 10.1021/acs.nanolett.3c03669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
We investigated the Kondo effect of cobalt(II)-5-15-bis(4'-bromophenyl)-10,20-bis(4'-iodophenyl)porphyrin (CoTPPBr2I2) molecules on Au(111) with low-temperature scanning tunneling microscopy under ultrahigh vacuum conditions. The molecules exhibit four adsorption configurations at the top and bridge sites of the surface with different molecular orientations. The Kondo resonance shows extraordinary sensitivity to the adsorption configuration. By switching the molecule between different configurations, the Kondo temperature is varied over a wide range from ≈8 up to ≈250 K. Density functional theory calculations reveal that changes of the adsorption configuration lead to distinct variations of the hybridization between the molecule and the surface. Furthermore, we show that surface reconstruction plays a significant role for the molecular Kondo effect.
Collapse
Affiliation(s)
- Xiangzhi Meng
- Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität, 24098 Kiel, Germany
| | - Jenny Möller
- Otto-Diels-Institut für Organische Chemie, Christian-Albrechts-Universität, 24098 Kiel, Germany
| | - Rodrigo E Menchón
- Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastián, Spain
- Facultad de Ciencias Exactas, Ingeniría y Agrimensura (FCEIA), Instituto de Física Rosario (IFIR), 2000 Rosario, Argentina
- Universidad Nacional de Rosario (UNR), 2000 Rosario, Argentina
| | - Alexander Weismann
- Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität, 24098 Kiel, Germany
| | - Daniel Sánchez-Portal
- Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastián, Spain
- Centro de Física de Materiales CSIC-UPV/EHU, 20018 Donostia-San Sebastián, Spain
| | - Aran Garcia-Lekue
- Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastián, Spain
- Ikerbasque, Basque Foundation for Science, 48013 Bilbao, Spain
| | - Rainer Herges
- Otto-Diels-Institut für Organische Chemie, Christian-Albrechts-Universität, 24098 Kiel, Germany
| | - Richard Berndt
- Institut für Experimentelle und Angewandte Physik, Christian-Albrechts-Universität, 24098 Kiel, Germany
| |
Collapse
|
3
|
Wen ECH, Jacobse PH, Jiang J, Wang Z, McCurdy RD, Louie SG, Crommie MF, Fischer FR. Magnetic Interactions in Substitutional Core-Doped Graphene Nanoribbons. J Am Chem Soc 2022; 144:13696-13703. [PMID: 35867847 DOI: 10.1021/jacs.2c04432] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The design of a spin imbalance within the crystallographic unit cell of bottom-up engineered 1D graphene nanoribbons (GNRs) gives rise to nonzero magnetic moments within each cell. Here, we demonstrate the bottom-up assembly and spectroscopic characterization of a one-dimensional Kondo spin chain formed by a chevron-type GNR (cGNR) physisorbed on Au(111). Substitutional nitrogen core doping introduces a pair of low-lying occupied states per monomer within the semiconducting gap of cGNRs. Charging resulting from the interaction with the gold substrate quenches one electronic state for each monomer, leaving behind a 1D chain of radical cations commensurate with the unit cell of the ribbon. Scanning tunneling microscopy (STM) and spectroscopy (STS) reveal the signature of a Kondo resonance emerging from the interaction of S = 1/2 spin centers in each monomer core with itinerant electrons in the Au substrate. STM tip lift-off experiments locally reduce the effective screening of the unpaired radical cation being lifted, revealing a robust exchange coupling between neighboring spin centers. First-principles DFT-LSDA calculations support the presence of magnetic moments in the core of this GNR when it is placed on Au.
Collapse
Affiliation(s)
- Ethan Chi Ho Wen
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Peter H Jacobse
- Department of Physics, University of California, Berkeley, California 94720, United States
| | - Jingwei Jiang
- Department of Physics, University of California, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Ziyi Wang
- Department of Physics, University of California, Berkeley, California 94720, United States
| | - Ryan D McCurdy
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Steven G Louie
- Department of Physics, University of California, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Michael F Crommie
- Department of Physics, University of California, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.,Kavli Energy NanoSciences Institute at the University of California Berkeley and the Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Felix R Fischer
- Department of Chemistry, University of California, Berkeley, California 94720, United States.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.,Kavli Energy NanoSciences Institute at the University of California Berkeley and the Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| |
Collapse
|
4
|
Magnetic molecules as local sensors of topological hysteresis of superconductors. Nat Commun 2022; 13:3838. [PMID: 35788608 PMCID: PMC9253336 DOI: 10.1038/s41467-022-31320-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 06/14/2022] [Indexed: 11/08/2022] Open
Abstract
Superconductors and magnetic materials, including molecules, are key ingredients for quantum computing and spintronics. However, only a little is known about how these materials interact in multilayer nanostructures like the hybrid architectures nowadays under development for such advanced applications. Here, we show that a single layer of magnetic molecules, Terbium(III) bis-phthalocyaninato (TbPc2) complexes, deposited under controlled UHV conditions on a superconducting Pb(111) surface is sensitive to the topology of the intermediate state of the superconductor, namely to the presence and evolution of superconducting and normal domains due to screening and penetration of an external magnetic field. The topological hysteresis of the superconducting substrate imprints a local evolution of the magnetisation of the TbPc2 molecules in the monolayer. Element and surface selective detection is achieved by recording the X-ray magnetic circular dichroism of the Tb atoms. This study reveals the impressive potential of magnetic molecules for sensing local magnetic field variations in molecular/superconductor hybrid devices, including spin resonators or spin injecting and spin filtering components for spintronics applications.
Collapse
|
5
|
Shahed SM, Ara F, Hossain MI, Katoh K, Yamashita M, Komeda T. Observation of Yu-Shiba-Rusinov States and Inelastic Tunneling Spectroscopy for Intramolecule Magnetic Exchange Interaction Energy of Terbium Phthalocyanine (TbPc) Species Adsorbed on Superconductor NbSe 2. ACS NANO 2022; 16:7651-7661. [PMID: 35467334 PMCID: PMC9134493 DOI: 10.1021/acsnano.1c11221] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 04/21/2022] [Indexed: 06/14/2023]
Abstract
We investigated the spin properties of the terbium phthalocyanine (TbPc) species adsorbed on the superconductor NbSe2 surface using scanning tunneling microscopy and spectroscopy. TbPc2 is a molecule in a class of single-molecule magnets (SMMs), and the use of superconductor electrodes attracts attention for the application to the devices using the spin degree of freedom. TbPc is a building block of TbPc2 and can reveal the spin component's behavior. In the experiment, TbPc species were placed on the surface of the superconductor NbSe2. We measured Yu-Shiba-Rusinov (YSR) states caused by the interaction between the superconducting state and magnetic impurity and inelastic tunneling spectroscopy (IETS) for the spin excitation, below 1 K. We also measured the Kondo state formed by the magnetic singlet formation. We detected the radical spin at the ligand position of the TbPc by the presence of the Kondo peak and demonstrated that the radical spin forms the YSR feature. In addition, the exchange interaction energy (Eex) between the spins of the radical ligand (Pc) and the center 4f metal atom (Tb3+) is determined by using the IETS technique. Eex is a critical parameter that determines the blocking temperature, below which the sample behaves as an SMM. IETS results show that the statistical distribution of Eex has peaked at 1.3, 1.6, and 1.9 meV. The energy range is comparable to the recent theoretical calculation result. In addition, we show that the energy variation is correlated with the bonding configuration of TbPc.
Collapse
Affiliation(s)
- Syed Mohammad
Fakruddin Shahed
- Institute
of Multidisciplinary Research for Advanced Materials (IMRAM, Tagen), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 9800877, Japan
| | - Ferdous Ara
- Institute
of Multidisciplinary Research for Advanced Materials (IMRAM, Tagen), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 9800877, Japan
| | - Mohammad Ikram Hossain
- Institute
of Multidisciplinary Research for Advanced Materials (IMRAM, Tagen), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 9800877, Japan
| | - Keiichi Katoh
- Department
of Chemistry, Graduate School of Science, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-0295, Japan
| | - Masahiro Yamashita
- Department
of Chemistry, Graduate School of Science, Tohoku University, Aramaki-Aza-Aoba, Aoba-Ku, Sendai 980-8578, Japan
- School
of Materials Science and Engineering, Nankai
University, Tianjin 300350, China
| | - Tadahiro Komeda
- Institute
of Multidisciplinary Research for Advanced Materials (IMRAM, Tagen), Tohoku University, 2-1-1, Katahira, Aoba-Ku, Sendai 9800877, Japan
| |
Collapse
|
6
|
Martynov AG, Horii Y, Katoh K, Bian Y, Jiang J, Yamashita M, Gorbunova YG. Rare-earth based tetrapyrrolic sandwiches: chemistry, materials and applications. Chem Soc Rev 2022; 51:9262-9339. [DOI: 10.1039/d2cs00559j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
This review summarises advances in chemistry of tetrapyrrole sandwiches with rare earth elements and highlights the current state of their use in single-molecule magnetism, organic field-effect transistors, conducting materials and nonlinear optics.
Collapse
Affiliation(s)
- Alexander G. Martynov
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071, Leninskiy pr., 31, bldg.4, Moscow, Russia
| | - Yoji Horii
- Department of Chemistry, Faculty of Science, Nara Women's University, Nara 630-8506, Japan
| | - Keiichi Katoh
- Department of Chemistry, Graduate School of Science, Josai University, 1-1 Keyakidai, Sakado, Saitama 350-0295, Japan
| | - Yongzhong Bian
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
- Daxing Research Institute, and Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, China
| | - Jianzhuang Jiang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China
- Daxing Research Institute, and Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, China
| | - Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-Ku, Sendai 980-8578, Japan
| | - Yulia G. Gorbunova
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 119071, Leninskiy pr., 31, bldg.4, Moscow, Russia
- N.S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Leninskiy pr., 31, Moscow, Russia
| |
Collapse
|
7
|
Serrano G, Sorrentino AL, Poggini L, Cortigiani B, Goletti C, Sessoli R, Mannini M. Substrate mediated interaction of terbium(III) double-deckers with the TiO 2(110) surface. Phys Chem Chem Phys 2021; 23:12060-12067. [PMID: 34013308 DOI: 10.1039/d1cp00928a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
A terbium(iii)-bis(phthalocyaninato) neutral complex was deposited on the rutile TiO2(110) surface, and their interaction was studied by Scanning Tunneling Microscopy (STM) and X-ray Photoelectron Spectroscopy (XPS). It was found that the TiO2 rutile surface favours the adsorption of isolated molecules adopting a lying down configuration with the phthalocyanine planes tilted by about 30° when they lie in the first layer. The electronic and chemical properties of the molecules on the surface were studied by XPS as a function of the TiO2(110) substrate preparation. This study evidences that strong molecule-substrate interactions are present and a charge transfer process occurs from the molecule to the surface.
Collapse
Affiliation(s)
- Giulia Serrano
- Department of Chemistry "U. Schiff" and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy and Department of Industrial Engineering and INSTM Research Unit, University of Florence, Via Santa Marta 3, 50139 Florence (FI), Italy.
| | - Andrea Luigi Sorrentino
- Department of Chemistry "U. Schiff" and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy and Department of Industrial Engineering and INSTM Research Unit, University of Florence, Via Santa Marta 3, 50139 Florence (FI), Italy.
| | - Lorenzo Poggini
- Department of Chemistry "U. Schiff" and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy and Institute for Chemistry of OrganoMetallic Compounds (ICCOM-CNR), Via Madonna del Piano, 50019 Sesto Fiorentino (FI), Italy.
| | - Brunetto Cortigiani
- Department of Chemistry "U. Schiff" and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
| | - Claudio Goletti
- Dipartimento di Fisica, Università degli Studi di Roma "Tor Vergata", Via della Ricerca Scientifica 1, 00133, Rome, Italy
| | - Roberta Sessoli
- Department of Chemistry "U. Schiff" and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
| | - Matteo Mannini
- Department of Chemistry "U. Schiff" and INSTM Research Unit, University of Florence, Via della Lastruccia 3-13, 50019 Sesto Fiorentino (FI), Italy
| |
Collapse
|
8
|
Yamashita M. Next Generation Multifunctional Nano-Science of Advanced Metal Complexes with Quantum Effect and Nonlinearity. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200257] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Masahiro Yamashita
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
- School of Materials Science and Engineering, Nankai University, Tianjin 300350, P. R. China
| |
Collapse
|
9
|
Dailey M, Besson C. Selective crystallization of four bis(phthalocyaninato)lanthanoid( iii) polymorphs. CrystEngComm 2021. [DOI: 10.1039/d1ce00936b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Four polymorphs of the bis-phthalocyanine lanthanoid(iii) double-decker complexes are crystallized by solution evaporation methods, and their structures determined by single-crystal X-ray crystallography.
Collapse
Affiliation(s)
- Maegan Dailey
- Department of Chemistry, The George Washington University, 800 22nd Street NW, Washington, D.C. 20052, USA
| | - Claire Besson
- Department of Chemistry, The George Washington University, 800 22nd Street NW, Washington, D.C. 20052, USA
| |
Collapse
|
10
|
Manipulation of Molecular Spin State on Surfaces Studied by Scanning Tunneling Microscopy. NANOMATERIALS 2020; 10:nano10122393. [PMID: 33266045 PMCID: PMC7761235 DOI: 10.3390/nano10122393] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 11/27/2020] [Accepted: 11/27/2020] [Indexed: 11/17/2022]
Abstract
The adsorbed magnetic molecules with tunable spin states have drawn wide attention for their immense potential in the emerging fields of molecular spintronics and quantum computing. One of the key issues toward their application is the efficient controlling of their spin state. This review briefly summarizes the recent progress in the field of molecular spin state manipulation on surfaces. We focus on the molecular spins originated from the unpaired electrons of which the Kondo effect and spin excitation can be detected by scanning tunneling microscopy and spectroscopy (STM and STS). Studies of the molecular spin-carriers in three categories are overviewed, i.e., the ones solely composed of main group elements, the ones comprising 3d-metals, and the ones comprising 4f-metals. Several frequently used strategies for tuning molecular spin state are exemplified, including chemical reactions, reversible atomic/molecular chemisorption, and STM-tip manipulations. The summary of the successful case studies of molecular spin state manipulation may not only facilitate the fundamental understanding of molecular magnetism and spintronics but also inspire the design of the molecule-based spintronic devices and materials.
Collapse
|
11
|
Tada K, Hayashi A, Maruyama T, Koga H, Yamanaka S, Okumura M, Tanaka S. Effect of surface interactions on spin contamination errors of homogeneous spin dimers, chains, and films: model calculations of Au/MgO and Au/BaO systems. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1791989] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Kohei Tada
- Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Japan
| | - Akihide Hayashi
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Japan
| | - Tomohiro Maruyama
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Japan
| | - Hiroaki Koga
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Japan
- Research Organization for Information Science and Technology (RIST), Tokyo, Japan
- Element Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto, Japan
| | - Shusuke Yamanaka
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Japan
| | - Mitsutaka Okumura
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Japan
- Element Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University, Kyoto, Japan
| | - Shingo Tanaka
- Research Institute of Electrochemical Energy, Department of Energy and Environment, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Japan
| |
Collapse
|
12
|
Enhanced magnetic spin-spin interactions observed between porphyrazine derivatives on Au(111). Commun Chem 2020; 3:36. [PMID: 36703412 PMCID: PMC9814269 DOI: 10.1038/s42004-020-0282-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 02/28/2020] [Indexed: 01/29/2023] Open
Abstract
Magnetic molecules are of interest for application in spintronic and quantum-information processing devices. Therein, control of the interaction between the spins of neighboring molecules is the critical issue. Substitution of outer moieties of the molecule can tune the molecule-molecule interaction. Here we show a novel spin behavior for a magnetic molecule of vanadyl tetrakis (thiadiazole) porphyrazine (abbreviated as VOTTDPz) adsorbed on Au(111), which is modified from vanadyl phthalocyanine (VOPc) by replacing the inert phthalocyanine ligand with a reactive thiadiazole moiety. The magnetic properties of the molecules are examined by observing the Kondo resonance caused by the screening of an isolated spin by conduction electrons using scanning tunneling spectroscopy. The Kondo features are detected at the molecule whose shape and intensity show site-dependent variation, revealing complex spin-spin interactions due to the enhanced interaction between molecules, originating from the functionalization of the ligand with a more reactive moiety.
Collapse
|
13
|
Barhoumi R, Amokrane A, Klyatskaya S, Boero M, Ruben M, Bucher JP. Screening the 4f-electron spin of TbPc 2 single-molecule magnets on metal substrates by ligand channeling. NANOSCALE 2019; 11:21167-21179. [PMID: 31663092 DOI: 10.1039/c9nr05873g] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Bis(phthalocyaninato)lanthanide (LnPc2) double-decker-based devices have recently attracted a great deal of interest for data encoding purposes. Although the 4f-electrons of lanthanide ions play a key role in the experimental methodology, their localized character, deeper in energy compared to the 3d electrons of transition metals, hampers a detailed investigation. Here, our approach consists of the follow-up of the entanglement process with other molecules and with the substrate electrons by means of space-resolved detection of the Kondo resonance by scanning tunneling spectroscopy (STS), using different substrates (from weak to strong interaction). It is found that TbPc2 molecules firstly interact with their environment by means of the π-radicals of the ligand. The radical spin of TbPc2 can be identified by STS on a weakly interacting substrate such as Au(111). In the case of a Ag(111) substrate, we are able to analyze the effect of an electron transfer on the molecule (pairing-up of the radical spin) and the subsequent quenching of the Kondo resonance. Finally, on a strongly interacting substrate such as Cu(111), a significant rearrangement of electrons takes place and the Kondo screening of the 4f electrons of the Tb ion of TbPc2 is observed. By comparative STS measurements on YPc2, that has empty 4d and 4f shells, we prove that the Kondo resonance measured in the center of the TbPc2 molecule indeed stems from the 4f-electrons. At the same time, we provide evidence for the hybridization of the 4f states with the π electron.
Collapse
Affiliation(s)
- Rabei Barhoumi
- Université de Strasbourg, CNRS, IPCMS UMR 7504, F-67034 Strasbourg, France.
| | - Anis Amokrane
- Université de Strasbourg, CNRS, IPCMS UMR 7504, F-67034 Strasbourg, France.
| | - Svetlana Klyatskaya
- Karlsruher Institut für Technologie, Institut für Nanotechnologie, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Mauro Boero
- Université de Strasbourg, CNRS, IPCMS UMR 7504, F-67034 Strasbourg, France.
| | - Mario Ruben
- Karlsruher Institut für Technologie, Institut für Nanotechnologie, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Jean-Pierre Bucher
- Université de Strasbourg, CNRS, IPCMS UMR 7504, F-67034 Strasbourg, France.
| |
Collapse
|
14
|
Moro-Lagares M, Korytár R, Piantek M, Robles R, Lorente N, Pascual JI, Ibarra MR, Serrate D. Real space manifestations of coherent screening in atomic scale Kondo lattices. Nat Commun 2019; 10:2211. [PMID: 31101815 PMCID: PMC6525169 DOI: 10.1038/s41467-019-10103-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 04/18/2019] [Indexed: 11/10/2022] Open
Abstract
The interaction among magnetic moments screened by conduction electrons drives quantum phase transitions between magnetically ordered and heavy-fermion ground states. Here, starting from isolated magnetic impurities in the Kondo regime, we investigate the formation of the finite size analogue of a heavy Fermi liquid. We build regularly-spaced chains of Co adatoms on a metallic surface by atomic manipulation. Scanning tunneling spectroscopy is used to obtain maps of the Kondo resonance intensity with sub-atomic resolution. For sufficiently small interatomic separation, the spatial distribution of Kondo screening does not coincide with the position of the adatoms. It also develops enhancements at both edges of the chains. Since we can rule out any other interaction between Kondo impurities, this is explained in terms of the indirect hybridization of the Kondo orbitals mediated by a coherent electron gas, the mechanism that causes the emergence of heavy quasiparticles in the thermodynamic limit.
Collapse
Affiliation(s)
- María Moro-Lagares
- Laboratorio de Microscopias Avanzadas, Instituto de Nanociencia de Aragón, University of Zaragoza, E-50018, Zaragoza, Spain.,Institute of Physics, Academy of Sciences, Prague, 16200, Czech Republic.,Regional Centre of Advanced Technologies and Materials, Faculty of Science, Department of Physical Chemistry, Palacky University, Olomouc, 78371, Czech Republic
| | - Richard Korytár
- Department of Condensed Matter Physics, Faculty of Mathematics and Physics, Charles University, 121 16, Prague 2, Czech Republic
| | - Marten Piantek
- Laboratorio de Microscopias Avanzadas, Instituto de Nanociencia de Aragón, University of Zaragoza, E-50018, Zaragoza, Spain.,Dpto.Física Materia Condensada, University of Zaragoza, E-50009, Zaragoza, Spain
| | - Roberto Robles
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193, Barcelona, Spain
| | - Nicolás Lorente
- Centro de Física de Materiales CFM/MPC (CSIC-UPV/EHU), 20018, Donostia-San Sebastián, Spain.,Donostia International Physics Center (DIPC), 20018, Donostia-San Sebastian, Spain
| | - Jose I Pascual
- Laboratorio de Microscopias Avanzadas, Instituto de Nanociencia de Aragón, University of Zaragoza, E-50018, Zaragoza, Spain.,CIC NanoGUNE, E-20018, Donostia-San Sebastián, Spain.,IKERBASQUE, Basque Foundation for Science, E-48011, Bilbao, Spain
| | - M Ricardo Ibarra
- Laboratorio de Microscopias Avanzadas, Instituto de Nanociencia de Aragón, University of Zaragoza, E-50018, Zaragoza, Spain.,Dpto.Física Materia Condensada, University of Zaragoza, E-50009, Zaragoza, Spain
| | - David Serrate
- Laboratorio de Microscopias Avanzadas, Instituto de Nanociencia de Aragón, University of Zaragoza, E-50018, Zaragoza, Spain. .,Dpto.Física Materia Condensada, University of Zaragoza, E-50009, Zaragoza, Spain. .,Instituto de Ciencia de Materiales de Aragón, CSIC - Universidad de Zaragoza, 50009, Zaragoza, Spain.
| |
Collapse
|
15
|
Inose T, Tanaka D, Liu J, Kajihara M, Mishra P, Ogawa T, Komeda T. Coordination structure conversion of protonated bisporphyrinato terbium(iii) double-decker complexes and creation of a Kondo assembly by electron injection on the Au(111) surface. NANOSCALE 2018; 10:19409-19417. [PMID: 30307449 DOI: 10.1039/c8nr04630a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The first step towards the synthesis of single-molecule magnet (SMM)-based spintronics devices is the organization and manipulation of magnetic molecules on surfaces. Our previous studies on bulk crystals demonstrated that protonated porphyrinato double-decker complexes [Tb(Hoep)(oep)] (oep = 2,3,7,8,12,13,17,18-octaethylporphyrinato) are not SMMs; however, once a hydrogen is removed to produce their neutral radical forms, [Tb(oep)2], they convert to SMMs. These intriguing properties encouraged us to examine the electronic/spin properties of these complexes and their chemical conversion ability after their transfer onto a metal substrate, similar to the environment required for the practical application of SMMs. Herein, we conducted a single-molecule-scale conversion of the protonated bis(porphyrinato)terbium(iii) double-decker complex [Tb(Hoep)(oep)], whose hepta-coordinated terbium ion changes into octa-coordinated [Tb(oep)2] on detaching a hydrogen atom by scanning tunnelling microscopy. This conversion can be caused by the injection of tunnelling electrons of energy 1.5-2.5 eV. We confirmed the conversion by analysing the topographic image and the spin state of the molecule. The latter was achieved by examining the Kondo resonance, which originated from the screening of the molecular spin by the conduction electrons of the metal. The Kondo resonance was not observed for [Tb(Hoep)(oep)] but was observed for the converted species, which agrees well with a model containing the [Tb(oep)2] molecule and Kondo resonance originating from the π-electron spin of the porphyrin ligand. Even though it is not possible to provide complete evidence of the SMM properties of the transferred molecule, we have demonstrated a possible path to realize the switch-on SMM properties of a single molecule.
Collapse
Affiliation(s)
- Tomoko Inose
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 5600043, Japan
| | | | | | | | | | | | | |
Collapse
|
16
|
Hellerstedt J, Cahlík A, Švec M, de la Torre B, Moro-Lagares M, Chutora T, Papoušková B, Zoppellaro G, Mutombo P, Ruben M, Zbořil R, Jelinek P. On-surface structural and electronic properties of spontaneously formed Tb 2Pc 3 single molecule magnets. NANOSCALE 2018; 10:15553-15563. [PMID: 30087975 DOI: 10.1039/c8nr04215b] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The single molecule magnet (SMM) bis(phthalocyaninato)terbium(iii) (TbPc2) has received significant and increasing attention as an exemplar system for realizing molecule-based spin electronics. Attaining higher nuclearity via multi-decker TbPc systems has remained an outstanding challenge, as known examples of Tb2Pc3 systems are only those containing Pc rings with substituents (e.g. alkyl, alkoxyl). Here we report on the spontaneous formation of Tb2Pc3 species from TbPc2 precursors via sublimation in ultrahigh vacuum (UHV) onto an Ag(111) surface. The presence of Tb2Pc3 molecules on the surface are inspected using scanning probe microscopy with submolecular resolution supported by density functional theory (DFT) calculations and additional chemical analysis. We observe the selective presence of a Kondo resonance (30 K) in the Tb2Pc3 species, that we attribute to differences in the orientation of the internal molecular ligands. Formation of triple-decker complexes offers new possibilities to study and control magnetic interactions not accessible with standard TbPc2 molecules.
Collapse
Affiliation(s)
- Jack Hellerstedt
- Institute of Physics of the Czech Academy of Sciences, v.v.i., Cukrovarnická 10, 162 00 Praha 6, Czech Republic.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
17
|
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.
Collapse
Affiliation(s)
- Yuan Fang
- Department of Chemistry and Biochemistry, Concordia University, 7141 Sherbrooke St. W., Montreal, Québec H4B 1R6, Canada.
| | | | | | | | | | | | | |
Collapse
|
18
|
Zhang Y, Wang Y, Liao P, Wang K, Huang Z, Liu J, Chen Q, Jiang J, Wu K. Detection and Manipulation of Charge States for Double-Decker DyPc 2 Molecules on Ultrathin CuO Films. ACS NANO 2018; 12:2991-2997. [PMID: 29485853 DOI: 10.1021/acsnano.8b00751] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Charge states of lanthanide double-decker phthalocyanines complexes significantly influence their geometrical structures and magnetic properties. In this study, the charge states of single DyPc2 molecules on an ultrathin CuO film were detected by scanning tunneling microscopy and spectroscopy in magnetic fields. Four types of adsorptions of DyPc2 molecules on CuO were experimentally observed. Without applying voltages, two of them were positively charged with the other two at the neutral state. By controlling the sample bias, two types of neutral molecules can be switched to the positively and negatively charged states, respectively. This manipulation was not realized for the DyPc2 cations. A way to precisely detect the molecular charge states with and without current is beneficial for the development of molecular electronics.
Collapse
Affiliation(s)
- Yajie Zhang
- BNLMS, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Yongfeng Wang
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics , Peking University , Beijing 100871 , China
| | - Peilin Liao
- School of Materials Engineering , Purdue University , West Lafayette , Indiana 47907 , United States
| | - Kang Wang
- Department of Chemistry , Beijing University of Science and Technology , Beijing 100083 , China
| | - Zhichao Huang
- BNLMS, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Jing Liu
- BNLMS, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Qiwei Chen
- BNLMS, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| | - Jianzhuang Jiang
- Department of Chemistry , Beijing University of Science and Technology , Beijing 100083 , China
| | - Kai Wu
- BNLMS, College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China
| |
Collapse
|
19
|
Li R, Li N, Wang H, Weismann A, Zhang Y, Hou S, Wu K, Wang Y. Tuning the spin-related transport properties of FePc on Au(111) through single-molecule chemistry. Chem Commun (Camb) 2018; 54:9135-9138. [PMID: 30059079 DOI: 10.1039/c8cc02994f] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tuning the spin-related transport properties of FePc on Au(111) through single-molecule chemistry.
Collapse
Affiliation(s)
- Ruoning Li
- Key Laboratory for the Physics and Chemistry of Nanodevices
- Department of Electronics
- Peking University
- Beijing 100871
- China
| | - Na Li
- Key Laboratory for the Physics and Chemistry of Nanodevices
- Department of Electronics
- Peking University
- Beijing 100871
- China
| | - Hao Wang
- Key Laboratory for the Physics and Chemistry of Nanodevices
- Department of Electronics
- Peking University
- Beijing 100871
- China
| | - Alexander Weismann
- Institut für Experimentelle und Angewandte Physik
- Christian-Albrechts-Universität zu Kiel
- 24098 Kiel
- Germany
| | - Yajie Zhang
- Key Laboratory for the Physics and Chemistry of Nanodevices
- Department of Electronics
- Peking University
- Beijing 100871
- China
| | - Shimin Hou
- Key Laboratory for the Physics and Chemistry of Nanodevices
- Department of Electronics
- Peking University
- Beijing 100871
- China
| | - Kai Wu
- BNLMS
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
- China
| | - Yongfeng Wang
- Key Laboratory for the Physics and Chemistry of Nanodevices
- Department of Electronics
- Peking University
- Beijing 100871
- China
| |
Collapse
|
20
|
Amokrane A, Klyatskaya S, Boero M, Ruben M, Bucher JP. Role of π-Radicals in the Spin Connectivity of Clusters and Networks of Tb Double-Decker Single Molecule Magnets. ACS NANO 2017; 11:10750-10760. [PMID: 28967736 DOI: 10.1021/acsnano.7b05804] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
When single molecule magnets (SMMs) self-assemble into 2D networks on a surface, they interact via the π-electrons of their ligands. This interaction is relevant to the quantum entanglement between molecular qubits, a key issue in quantum computing. Here, we examine the role played by the unpaired radical electron in the top ligand of Tb double-decker SMMs by comparing the spectroscopic features of isolated and 2D assembled entities on surfaces. High-resolution scanning tunneling microscopy (STM) is used to evidence experimentally the Kondo resonance of the unpaired radical spins in clusters and islands and its quenching due to up-pairing at orbital overlaps. The presence or the absence of the Kondo feature in the dI/dV maps turns out to be a good measure of the lateral interaction between molecules in 2D networks. In a 2D cluster of molecules, the π-orbital lobes that are linked through the orbital overlap show paired-up electron wave function (one singly occupied molecular orbital (SOMO) with spin-up and the other with spin-down) and therefore do not experience the Kondo resonance in the experiment. As a result, small clusters built by STM-assisted manipulation of molecules show alternating Kondo features of quantum mechanical origin, from the monomer to the dimer and the trimer. On the other hand, when the TbPc2 molecular clusters grow larger and form extended domains, a geometric rearrangement occurs, leading to the quenching of the Kondo signal on one lobe out of two. The even distribution of overlapping (SOMO) lobes on the perimeter of the molecule is induced by the square symmetry of the semi-infinite lattice and clearly distinguishes the lattice from the clusters.
Collapse
Affiliation(s)
- Anis Amokrane
- Université de Strasbourg , CNRS, IPCMS UMR 7504, F-67034 Strasbourg, France
| | - Svetlana Klyatskaya
- Karlsruher Institut für Technologie , Institut für Nanotechnologie, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Mauro Boero
- Université de Strasbourg , CNRS, IPCMS UMR 7504, F-67034 Strasbourg, France
| | - Mario Ruben
- Karlsruher Institut für Technologie , Institut für Nanotechnologie, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Jean-Pierre Bucher
- Université de Strasbourg , CNRS, IPCMS UMR 7504, F-67034 Strasbourg, France
| |
Collapse
|
21
|
Mattioli G, Larciprete R, Alippi P, Bonapasta AA, Filippone F, Lacovig P, Lizzit S, Paoletti AM, Pennesi G, Ronci F, Zanotti G, Colonna S. Unexpected Rotamerism at the Origin of a Chessboard Supramolecular Assembly of Ruthenium Phthalocyanine. Chemistry 2017; 23:16319-16327. [DOI: 10.1002/chem.201703255] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Giuseppe Mattioli
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche (ISM-CNR) Roma Italy
| | - Rosanna Larciprete
- Istituto dei Sistemi Complessi del Consiglio Nazionale delle Ricerche (ISC-CNR) Via Fosso del Cavaliere 100 00133 Roma Italy
| | - Paola Alippi
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche (ISM-CNR) Roma Italy
| | - Aldo Amore Bonapasta
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche (ISM-CNR) Roma Italy
| | - Francesco Filippone
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche (ISM-CNR) Roma Italy
| | - Paolo Lacovig
- Elettra-Sincrotrone Trieste S.C.p.A. AREA Science Park S.S. 14 km 163.5 34149 Trieste Italy
| | - Silvano Lizzit
- Elettra-Sincrotrone Trieste S.C.p.A. AREA Science Park S.S. 14 km 163.5 34149 Trieste Italy
| | - Anna Maria Paoletti
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche (ISM-CNR) Roma Italy
| | - Giovanna Pennesi
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche (ISM-CNR) Roma Italy
| | - Fabio Ronci
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche (ISM-CNR) Roma Italy
| | - Gloria Zanotti
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche (ISM-CNR) Roma Italy
| | - Stefano Colonna
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche (ISM-CNR) Roma Italy
| |
Collapse
|
22
|
Alippi P, Lanzilotto V, Paoletti AM, Mattioli G, Zanotti G, Pennesi G, Filippone F, Cossaro A, Verdini A, Morgante A, Amore Bonapasta A. A Ru–Ru pair housed in ruthenium phthalocyanine: the role of a “cage” architecture in the molecule coupling with the Ag(111) surface. Phys Chem Chem Phys 2017; 19:1449-1457. [DOI: 10.1039/c6cp06094c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A combined experimental and theoretical study on the Ru–Pc dimer on Ag(111) proves surface-to-molecule charge transfer and predicts magnetic moment quenching.
Collapse
Affiliation(s)
- Paola Alippi
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| | - Valeria Lanzilotto
- CNR-IOM
- Laboratorio Nazionale TASC
- I-34129 Trieste
- Italy
- Department of Physics
| | - Anna Maria Paoletti
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| | - Giuseppe Mattioli
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| | - Gloria Zanotti
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| | - Giovanna Pennesi
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| | - Francesco Filippone
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| | | | | | - Alberto Morgante
- CNR-IOM
- Laboratorio Nazionale TASC
- I-34129 Trieste
- Italy
- Department of Physics
| | - Aldo Amore Bonapasta
- CNR-ISM
- Istituto di Struttura della Materia del Consiglio Nazionale delle Ricerche
- I-00015 Monterotondo Scalo
- Italy
| |
Collapse
|
23
|
Ferrando-Soria J, Magee S, Chiesa A, Carretta S, Santini P, Vitorica-Yrezabal I, Tuna F, Whitehead G, Sproules S, Lancaster K, Barra AL, Timco G, McInnes E, Winpenny R. Switchable Interaction in Molecular Double Qubits. Chem 2016. [DOI: 10.1016/j.chempr.2016.10.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
24
|
Serrano G, Wiespointner-Baumgarthuber S, Tebi S, Klyatskaya S, Ruben M, Koch R, Müllegger S. Bilayer of Terbium Double-Decker Single-Molecule Magnets. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2016; 120:13581-13586. [PMID: 27390613 PMCID: PMC4931617 DOI: 10.1021/acs.jpcc.6b03676] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 05/17/2016] [Indexed: 05/10/2023]
Abstract
We report a low-temperature scanning tunneling microscopy and spectroscopy study of the structural and electronic properties of a bilayer of terbium double-decker (bis(phthalocyaninato)terbium(III), TbPc2) molecules on Au(111) at 5 K. The TbPc2 molecules are found to adsorb flat on top of a first compact TbPc2 monolayer on Au(111), forming a square-like packing similar to the underlying first layer. Their frontier-orbital electronic structure, measured by tunneling conductance spectroscopy, clearly differs from that of the underlying first monolayer. Our results of second-layer molecules indicate the absence of, both, hybrid molecule-substrate electronic states close to the Fermi level and a zero-bias Kondo resonance. We attribute these findings to a decreased electronic coupling with the Au(111) substrate.
Collapse
Affiliation(s)
- Giulia Serrano
- Institute
of Semiconductor and Solid State Physics, Johannes Kepler University, 4040 Linz, Austria
- E-mail: . Phone: +43 73224689643. Fax: +43 73224689696
| | | | - Stefano Tebi
- Institute
of Semiconductor and Solid State Physics, Johannes Kepler University, 4040 Linz, Austria
| | - Svetlana Klyatskaya
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology, 76344 Eggenstein-Leopoldshafen, Germany
| | - Mario Ruben
- Institute
of Nanotechnology, Karlsruhe Institute of
Technology, 76344 Eggenstein-Leopoldshafen, Germany
- Institut
de Physique et de Chimie des Materiaux de Strasbourg, Universite de Strasbourg, CNRS UMP 7504, 23 Rue du Loess, Strasbourg 67034 Cedex 2, France
| | - Reinhold Koch
- Institute
of Semiconductor and Solid State Physics, Johannes Kepler University, 4040 Linz, Austria
| | - Stefan Müllegger
- Institute
of Semiconductor and Solid State Physics, Johannes Kepler University, 4040 Linz, Austria
| |
Collapse
|
25
|
Bi Y, Chen C, Zhao YF, Zhang YQ, Jiang SD, Wang BW, Han JB, Sun JL, Bian ZQ, Wang ZM, Gao S. Thermostability and photoluminescence of Dy(iii) single-molecule magnets under a magnetic field. Chem Sci 2016; 7:5020-5031. [PMID: 30155153 PMCID: PMC6018642 DOI: 10.1039/c6sc01157h] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 05/12/2016] [Indexed: 01/20/2023] Open
Abstract
A series of compounds [ADyL4]·[solvent] composed of a dysprosium(iii) ion coordinated by four chelated naphthyridine-like ligands (L = 4-hydroxy-8-methyl-1,5-naphthyridine-3-carbonitrile) and an alkali metal ion (A = Na, K, Rb, Cs) were synthesized and characterized. They behave as single-molecule magnets under a zero dc field with an effective energy barrier of around 95 cm-1. Meanwhile, the main part, [ADyL4], of these SMMs is thermostable and sublimable. The geometric structures of three sublimed compounds are identical to the original ones without solvents, which is confirmed by X-ray diffraction using single crystal and powder samples. The static and dynamic magnetic properties remain unchanged before and after sublimation. Luminescence measurements at 5-77 K were performed to verify the energy gap between low-lying states and to understand the pathway of the thermal relaxation process of magnetization, as well as to inspect the tiny variation in magnetic sublevels for the ground term of Dy(iii). The photoluminescence spectra under a magnetic field (0-36 T) for the Dy-SMMs are investigated for the first time. The energy splitting of the two lowest sublevels of the ground term 6H15/2 of Dy(iii) are analyzed using the Zeeman formula.
Collapse
Affiliation(s)
- Ye Bi
- Beijing National Laboratory for Molecular Sciences , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China . ;
| | - Cheng Chen
- Wuhan National High Magnetic Center , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Yi-Fang Zhao
- Beijing National Laboratory for Molecular Sciences , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China . ;
| | - Yi-Quan Zhang
- Jiangsu Key Laboratory for NSLSCS , School of Physical Science and Technology , Nanjing Normal University , Nanjing 210023 , China
| | - Shang-Da Jiang
- Beijing National Laboratory for Molecular Sciences , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China . ;
| | - Bing-Wu Wang
- Beijing National Laboratory for Molecular Sciences , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China . ;
| | - Jun-Bo Han
- Wuhan National High Magnetic Center , Huazhong University of Science and Technology , Wuhan 430074 , China
| | - Jun-Liang Sun
- Beijing National Laboratory for Molecular Sciences , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China . ;
| | - Zu-Qiang Bian
- Beijing National Laboratory for Molecular Sciences , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China . ;
| | - Zhe-Ming Wang
- Beijing National Laboratory for Molecular Sciences , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China . ;
| | - Song Gao
- Beijing National Laboratory for Molecular Sciences , State Key Laboratory of Rare Earth Materials Chemistry and Applications , College of Chemistry and Molecular Engineering , Peking University , Beijing 100871 , China . ;
| |
Collapse
|
26
|
Single-molecule magnetism of tetrapyrrole lanthanide compounds with sandwich multiple-decker structures. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.07.004] [Citation(s) in RCA: 157] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
27
|
Zhang Y, Liao P, Kan J, Yin C, Li N, Liu J, Chen Q, Wang Y, Chen W, Xu GQ, Jiang J, Berndt R, Wu K. Low-temperature scanning tunneling microscopy study on the electronic properties of a double-decker DyPc2 molecule at the surface. Phys Chem Chem Phys 2015; 17:27019-26. [DOI: 10.1039/c5cp03925h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Inaccessibility of the Dy 4f states in the double-decker DyPc2 molecule, as evidenced by dI/dV mapping in the constant height mode.
Collapse
|
28
|
Bian Y, Jiang J. Recent Advances in Phthalocyanine-Based Functional Molecular Materials. STRUCTURE AND BONDING 2015. [DOI: 10.1007/430_2015_194] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|