First Observation of a Kondo Resonance for a Stable Neutral Pure Organic Radical, 1,3,5-Triphenyl-6-oxoverdazyl, Adsorbed on the Au(111) SurfaceClick to copy article linkArticle link copied!
- Jie Liu
- Hironari Isshiki
- Keiichi Katoh
- Takaumi Morita
- Brian, K. Breedlove
- Masahiro Yamashita
- Tadahiro Komeda
Abstract

We investigated spin states of stable neutral pure-organic radical molecules of 1,3,5-triphenyl-6-oxoverdazyl (TOV) and 1,3,5-triphenyl-6-thioxoverdazly (TTV) adsorbed on an Au(111) surface, which appears as a Kondo resonance because of spin-electron interaction. By using scanning tunneling spectroscopy (STS), a clear Kondo resonance was detected for the TOV molecule. However, no Kondo resonance was detected for TOV molecules with protrusions in the occupied state image and for TTV molecules. Spin-resolved DFT calculations showed that an unpaired π electron was delocalized over the adsorbed TOV molecule, which was the origin of the Kondo resonance. For the TOV molecules with protrusions, we proposed a model in which an additional H atom was attached to the TOV molecule. Calculations showed that, upon transfer of an electron to the verdazyl ring, the unpaired π electron disappeared, accounting for the absence of a Kondo resonance in the STS spectra. The absence of a Kondo resonance for the TTV molecule can be explained in a similar manner. In other words, electron transfer to the verdazyl ring occurs because of Au–S bond formation.
Cited By
Smart citations by scite.ai include citation statements extracted from the full text of the citing article. The number of the statements may be higher than the number of citations provided by ACS Publications if one paper cites another multiple times or lower if scite has not yet processed some of the citing articles.
This article is cited by 58 publications.
- Lijun Zuo, Lyuzhou Ye, Xiangyang Li, Rui-Xue Xu, YiJing Yan, Xiao Zheng. Unraveling the Nature of Spin Coupling in a Metal-Free Diradical: Theoretical Distinction of Ferromagnetic and Antiferromagnetic Interactions. The Journal of Physical Chemistry Letters 2024, 15
(21)
, 5761-5769. https://doi.org/10.1021/acs.jpclett.4c01063
- L. C. Ribeiro, Victor Lopes, G. Chiappe, E. Louis, E. V. Anda. Kondo Effect in Distorted Titanium Phthalocyanine Molecules Adsorbed on a Cu(110) Metallic Surface. The Journal of Physical Chemistry C 2024, 128
(21)
, 8767-8773. https://doi.org/10.1021/acs.jpcc.3c07751
- Haitao Zhang, Carmen Herrmann. Interaction between TEMPO Radicals and Gold Surfaces. The Journal of Physical Chemistry C 2023, 127
(38)
, 19202-19212. https://doi.org/10.1021/acs.jpcc.3c04401
- Thomas Y. Baum, Saleta Fernández, Diego Peña, Herre S. J. van der Zant. Magnetic Fingerprints in an All-Organic Radical Molecular Break Junction. Nano Letters 2022, 22
(20)
, 8086-8092. https://doi.org/10.1021/acs.nanolett.2c02326
- Ángel Campos-Lendinez, Núria Crivillers, Stefan T. Bromley, Concepció Rovira, Gary W. Breton, Marta Mas-Torrent. Efficient Routes for the Preparation of Urazole Radical Self-Assembled Monolayers on Gold Surfaces. The Journal of Physical Chemistry C 2022, 126
(31)
, 13358-13365. https://doi.org/10.1021/acs.jpcc.2c02453
- Shaotang Song, Na Guo, Xinzhe Li, Guangwu Li, Yohei Haketa, Mykola Telychko, Jie Su, Pin Lyu, Zhizhan Qiu, Hanyan Fang, Xinnan Peng, Jing Li, Xinbang Wu, Ying Li, Chenliang Su, Ming Joo Koh, Jishan Wu, Hiromitsu Maeda, Chun Zhang, Jiong Lu. Real-Space Imaging of a Single-Molecule Monoradical Reaction. Journal of the American Chemical Society 2020, 142
(31)
, 13550-13557. https://doi.org/10.1021/jacs.0c05337
- M. R. Ajayakumar, César Moreno, Isaac Alcón, Francesc Illas, Concepció Rovira, Jaume Veciana, Stefan T. Bromley, Aitor Mugarza, Marta Mas-Torrent. Neutral Organic Radical Formation by Chemisorption on Metal Surfaces. The Journal of Physical Chemistry Letters 2020, 11
(10)
, 3897-3904. https://doi.org/10.1021/acs.jpclett.0c00269
- J. Granet, M. Sicot, I. C. Gerber, G. Kremer, T. Pierron, B. Kierren, L. Moreau, Y. Fagot-Revurat, S. Lamare, F. Chérioux, D. Malterre. Adsorption-Induced Kondo Effect in Metal-Free Phthalocyanine on Ag(111). The Journal of Physical Chemistry C 2020, 124
(19)
, 10441-10452. https://doi.org/10.1021/acs.jpcc.9b11141
- Jonathan
Z. Low, Gregor Kladnik, Laerte L. Patera, Sophia Sokolov, Giacomo Lovat, Elango Kumarasamy, Jascha Repp, Luis M. Campos, Dean Cvetko, Alberto Morgante, Latha Venkataraman. The Environment-Dependent Behavior of the Blatter Radical at the Metal–Molecule Interface. Nano Letters 2019, 19
(4)
, 2543-2548. https://doi.org/10.1021/acs.nanolett.9b00275
- Francesc Bejarano, Ignacio Jose Olavarria-Contreras, Andrea Droghetti, Ivan Rungger, Alexander Rudnev, Diego Gutiérrez, Marta Mas-Torrent, Jaume Veciana, Herre S. J. van der Zant, Concepció Rovira, Enrique Burzurı́, and Núria Crivillers . Robust Organic Radical Molecular Junctions Using Acetylene Terminated Groups for C–Au Bond Formation. Journal of the American Chemical Society 2018, 140
(5)
, 1691-1696. https://doi.org/10.1021/jacs.7b10019
- Thomas Knaak, Manuel Gruber, Christoph Lindström, Marie-Laure Bocquet, Jürgen Heck, and Richard Berndt . Ligand-Induced Energy Shift and Localization of Kondo Resonances in Cobalt-Based Complexes on Cu(111). Nano Letters 2017, 17
(11)
, 7146-7151. https://doi.org/10.1021/acs.nanolett.7b04181
- Giulia E. Pacchioni, Marina Pivetta, Luca Gragnaniello, Fabio Donati, Gabriel Autès, Oleg V. Yazyev, Stefano Rusponi, and Harald Brune . Two-Orbital Kondo Screening in a Self-Assembled Metal–Organic Complex. ACS Nano 2017, 11
(3)
, 2675-2681. https://doi.org/10.1021/acsnano.6b07431
- Manuel Gruber and Richard Berndt . Manipulation of Cyclohexene-Based Organic Molecules on Various Metallic Substrates. The Journal of Physical Chemistry C 2016, 120
(33)
, 18642-18650. https://doi.org/10.1021/acs.jpcc.6b06089
- Ryoma Hayakawa, Mohammad Amin Karimi, Jannic Wolf, Thomas Huhn, Martin Sebastian Zöllner, Carmen Herrmann, and Elke Scheer . Large Magnetoresistance in Single-Radical Molecular Junctions. Nano Letters 2016, 16
(8)
, 4960-4967. https://doi.org/10.1021/acs.nanolett.6b01595
- R. Gaudenzi, E. Burzurí, D. Reta, I. de P. R. Moreira, S. T. Bromley, C. Rovira, J. Veciana, and H. S. J. van der Zant . Exchange Coupling Inversion in a High-Spin Organic Triradical Molecule. Nano Letters 2016, 16
(3)
, 2066-2071. https://doi.org/10.1021/acs.nanolett.6b00102
- Veronica Mugnaini, Arrigo Calzolari, Ruslan Ovsyannikov, Antje Vollmer, Mathieu Gonidec, Isaac Alcon, Jaume Veciana, and Maddalena Pedio . Looking Inside the Perchlorinated Trityl Radical/Metal Spinterface through Spectroscopy. The Journal of Physical Chemistry Letters 2015, 6
(11)
, 2101-2106. https://doi.org/10.1021/acs.jpclett.5b00848
- Akira Tanushi, Tetsuro Kusamoto, Yohei Hattori, Kenji Takada, and Hiroshi Nishihara . Spin-Reconstructed Proton-Coupled Electron Transfer in a Ferrocene–Nickeladithiolene Hybrid. Journal of the American Chemical Society 2015, 137
(20)
, 6448-6451. https://doi.org/10.1021/jacs.5b02118
- Riccardo Frisenda, Rocco Gaudenzi, Carlos Franco, Marta Mas-Torrent, Concepció Rovira, Jaume Veciana, Isaac Alcon, Stefan T. Bromley, Enrique Burzurí, and Herre S. J. van der Zant . Kondo Effect in a Neutral and Stable All Organic Radical Single Molecule Break Junction. Nano Letters 2015, 15
(5)
, 3109-3114. https://doi.org/10.1021/acs.nanolett.5b00155
- Reza Kakavandi, Sabine-Antonia Savu, Lorenzo Sorace, Donella Rovai, Matteo Mannini, and Maria Benedetta Casu . Core-Hole Screening, Electronic Structure, and Paramagnetic Character in Thin Films of Organic Radicals Deposited on SiO2/Si(111). The Journal of Physical Chemistry C 2014, 118
(15)
, 8044-8049. https://doi.org/10.1021/jp5013736
- Gautam Mitra, Jueting Zheng, Karen Schaefer, Michael Deffner, Jonathan Z. Low, Luis M. Campos, Carmen Herrmann, Theo A. Costi, Elke Scheer. Conventional versus singlet-triplet Kondo effect in Blatter radical molecular junctions: Zero-bias anomalies and magnetoresistance. Chem 2025, 32 , 102500. https://doi.org/10.1016/j.chempr.2025.102500
- Hina Kobayashi, Michio M. Matsushita, Ken Kato, Masazumi Fujiwara, Yoshio Teki. Photocurrent EDMR Measurement and Carrier Behavior of TIPS-Pentacene Under FET Device Operation. Applied Magnetic Resonance 2025, 56
(1-2)
, 195-211. https://doi.org/10.1007/s00723-024-01715-2
- Nicolas Néel, Christian Dreßler, Jörg Kröger. Effect of orbital symmetry on probing the single-molecule Kondo effect. Physical Review B 2024, 109
(24)
https://doi.org/10.1103/PhysRevB.109.L241401
- Yaqi Zhang, Renhui Qiu, Kai Qu, Cheng Zhang, J. Fraser Stoddart, Hongliang Chen. Organic radicals in single-molecule junctions. Science China Materials 2024, 67
(3)
, 709-728. https://doi.org/10.1007/s40843-024-2792-0
- Jie Yao, Ai-Di Zhao, , . Advances in detection and regulation of surface-supported molecular quantum states. Acta Physica Sinica 2022, 71
(6)
, 060701. https://doi.org/10.7498/aps.71.20212324
- Carla Lupo, François Jamet, Wai Hei Terence Tse, Ivan Rungger, Cedric Weber. Maximally localized dynamical quantum embedding for solving many-body correlated systems. Nature Computational Science 2021, 1
(6)
, 410-420. https://doi.org/10.1038/s43588-021-00090-3
- Jialiang Xu, Li Zhu, Hu Gao, Chenhong Li, Meng‐Jiao Zhu, Zhen‐Yu Jia, Xin‐Yang Zhu, Yue Zhao, Shao‐Chun Li, Fan Wu, Zhen Shen. Ligand Non‐innocence and Single Molecular Spintronic Properties of Ag
II
Dibenzocorrole Radical on Ag(111). Angewandte Chemie 2021, 133
(21)
, 11808-11812. https://doi.org/10.1002/ange.202016674
- Jialiang Xu, Li Zhu, Hu Gao, Chenhong Li, Meng‐Jiao Zhu, Zhen‐Yu Jia, Xin‐Yang Zhu, Yue Zhao, Shao‐Chun Li, Fan Wu, Zhen Shen. Ligand Non‐innocence and Single Molecular Spintronic Properties of Ag
II
Dibenzocorrole Radical on Ag(111). Angewandte Chemie International Edition 2021, 60
(21)
, 11702-11706. https://doi.org/10.1002/anie.202016674
- Marc Philipp Bahlke, Michaela Schneeberger, Carmen Herrmann. Local decomposition of hybridization functions: Chemical insight into correlated molecular adsorbates. The Journal of Chemical Physics 2021, 154
(14)
https://doi.org/10.1063/5.0045640
- H. Koshida, H. Okuyama, S. Hatta, T. Aruga, E. Minamitani. Effect of local geometry on magnetic property of nitric oxide on
Au
(
110
)
−
(
1
×
2
)
. Physical Review B 2021, 103
(15)
https://doi.org/10.1103/PhysRevB.103.155412
- Zhen Xu, Jing Liu, Shimin Hou, Yongfeng Wang. Manipulation of Molecular Spin State on Surfaces Studied by Scanning Tunneling Microscopy. Nanomaterials 2020, 10
(12)
, 2393. https://doi.org/10.3390/nano10122393
- Tadahiro Komeda, Keiichi Katoh, Masahiro Yamashita. Single Molecule Magnet for Quantum Information Process'. 2019, 263-304. https://doi.org/10.1002/9783527823987.vol3_c11
- Laerte L. Patera, Sophia Sokolov, Jonathan Z. Low, Luis M. Campos, Latha Venkataraman, Jascha Repp. Abbildung des Orbitals des ungepaarten Elektrons in einem stabilen, organischen Radikal anhand seiner Kondo‐Resonanz. Angewandte Chemie 2019, 131
(32)
, 11179-11183. https://doi.org/10.1002/ange.201904851
- Laerte L. Patera, Sophia Sokolov, Jonathan Z. Low, Luis M. Campos, Latha Venkataraman, Jascha Repp. Resolving the Unpaired‐Electron Orbital Distribution in a Stable Organic Radical by Kondo Resonance Mapping. Angewandte Chemie International Edition 2019, 58
(32)
, 11063-11067. https://doi.org/10.1002/anie.201904851
- Marie‐Laure Bocquet, Nicolas Lorente, Richard Berndt, Manuel Gruber. Spin in a Closed‐Shell Organic Molecule on a Metal Substrate Generated by a Sigmatropic Reaction. Angewandte Chemie 2019, 131
(3)
, 831-834. https://doi.org/10.1002/ange.201812121
- Marie‐Laure Bocquet, Nicolas Lorente, Richard Berndt, Manuel Gruber. Spin in a Closed‐Shell Organic Molecule on a Metal Substrate Generated by a Sigmatropic Reaction. Angewandte Chemie International Edition 2019, 58
(3)
, 821-824. https://doi.org/10.1002/anie.201812121
- Ruoning Li, Na Li, Hao Wang, Alexander Weismann, Yajie Zhang, Shimin Hou, Kai Wu, Yongfeng Wang. Tuning the spin-related transport properties of FePc on Au(111) through single-molecule chemistry. Chemical Communications 2018, 54
(66)
, 9135-9138. https://doi.org/10.1039/C8CC02994F
- W. H. Appelt, A. Droghetti, L. Chioncel, M. M. Radonjić, E. Muñoz, S. Kirchner, D. Vollhardt, I. Rungger. Predicting the conductance of strongly correlated molecules: the Kondo effect in perchlorotriphenylmethyl/Au junctions. Nanoscale 2018, 10
(37)
, 17738-17750. https://doi.org/10.1039/C8NR03991G
- Junyang Liu, Xiaotao Zhao, Qusiy Al‐Galiby, Xiaoyan Huang, Jueting Zheng, Ruihao Li, Cancan Huang, Yang Yang, Jia Shi, David Zsolt Manrique, Colin J. Lambert, Martin R. Bryce, Wenjing Hong. Radical‐Enhanced Charge Transport in Single‐Molecule Phenothiazine Electrical Junctions. Angewandte Chemie 2017, 129
(42)
, 13241-13245. https://doi.org/10.1002/ange.201707710
- Junyang Liu, Xiaotao Zhao, Qusiy Al‐Galiby, Xiaoyan Huang, Jueting Zheng, Ruihao Li, Cancan Huang, Yang Yang, Jia Shi, David Zsolt Manrique, Colin J. Lambert, Martin R. Bryce, Wenjing Hong. Radical‐Enhanced Charge Transport in Single‐Molecule Phenothiazine Electrical Junctions. Angewandte Chemie International Edition 2017, 56
(42)
, 13061-13065. https://doi.org/10.1002/anie.201707710
- Andrea Droghetti, Ivan Rungger. Quantum transport simulation scheme including strong correlations and its application to organic radicals adsorbed on gold. Physical Review B 2017, 95
(8)
https://doi.org/10.1103/PhysRevB.95.085131
- Gonca Seber, Alexander V. Rudnev, Andrea Droghetti, Ivan Rungger, Jaume Veciana, Marta Mas‐Torrent, Concepció Rovira, Núria Crivillers. Covalent Modification of Highly Ordered Pyrolytic Graphite with a Stable Organic Free Radical by Using Diazonium Chemistry. Chemistry – A European Journal 2017, 23
(6)
, 1415-1421. https://doi.org/10.1002/chem.201604700
- Zhichao Huang, Yajie Zhang, Yang He, Huanjun Song, Cen Yin, Kai Wu. A chemist's overview of surface electron spins. Chemical Society Reviews 2017, 46
(7)
, 1955-1976. https://doi.org/10.1039/C6CS00891G
- M. R. Ajayakumar, I. Alcón, S. T. Bromley, J. Veciana, C. Rovira, M. Mas-Torrent. Direct covalent grafting of an organic radical core on gold and silver. RSC Advances 2017, 7
(33)
, 20076-20083. https://doi.org/10.1039/C7RA01686G
- Emi MINAMITANI. Kondo Effect in Molecules on Surfaces: From Theoretical Point of View. Journal of the Vacuum Society of Japan 2017, 60
(5)
, 170-175. https://doi.org/10.3131/jvsj2.60.170
- Reza Kakavandi, Arrigo Calzolari, Yulia B. Borozdina, Prince Ravat, Thomas Chassé, Martin Baumgarten, M. Benedetta Casu. Unraveling the mark of surface defects on a spinterface: The nitronyl nitroxide/TiO2(110) interface. Nano Research 2016, 9
(11)
, 3515-3527. https://doi.org/10.1007/s12274-016-1228-1
- Keiichi Katoh, Tadahiro Komeda, Masahiro Yamashita. The Frontier of Molecular Spintronics Based on Multiple-Decker Phthalocyaninato Tb
III
Single-Molecule Magnets. The Chemical Record 2016, 16
(2)
, 987-1016. https://doi.org/10.1002/tcr.201500290
- Sujoy Karan, Richard Berndt. Generation of spin in single cholesterol molecules on gold. Physical Chemistry Chemical Physics 2016, 18
(14)
, 9334-9337. https://doi.org/10.1039/C5CP07410J
- I-Po Hong, Na Li, Ya-Jie Zhang, Hao Wang, Huan-Jun Song, Mei-Lin Bai, Xiong Zhou, Jian-Long Li, Gao-Chen Gu, Xue Zhang, Min Chen, J. Michael Gottfried, Dong Wang, Jing-Tao Lü, Lian-Mao Peng, Shi-Min Hou, Richard Berndt, Kai Wu, Yong-Feng Wang. Vacuum synthesis of magnetic aluminum phthalocyanine on Au(111). Chemical Communications 2016, 52
(68)
, 10338-10341. https://doi.org/10.1039/C6CC03359H
- Violeta Iancu, Koen Schouteden, Zhe Li, Chris Van Haesendonck. Electron–phonon coupling in engineered magnetic molecules. Chemical Communications 2016, 52
(76)
, 11359-11362. https://doi.org/10.1039/C6CC03847F
- Ferdous Ara, Zhi Kun Qi, Jie Hou, Tadahiro Komeda, Keiichi Katoh, Masahiro Yamashita. A scanning tunneling microscopy study of the electronic and spin states of bis(phthalocyaninato)terbium(
iii
) (TbPc
2
) molecules on Ag(111). Dalton Transactions 2016, 45
(42)
, 16644-16652. https://doi.org/10.1039/C6DT01967F
- Sujoy Karan, Na Li, Yajie Zhang, Yang He, I-Po Hong, Huanjun Song, Jing-Tao Lü, Yongfeng Wang, Lianmao Peng, Kai Wu, Georg S. Michelitsch, Reinhard J. Maurer, Katharina Diller, Karsten Reuter, Alexander Weismann, Richard Berndt. Spin Manipulation by Creation of Single-Molecule Radical Cations. Physical Review Letters 2016, 116
(2)
https://doi.org/10.1103/PhysRevLett.116.027201
- Fan Wu, Jie Liu, Puneet Mishra, Tadahiro Komeda, John Mack, Yi Chang, Nagao Kobayashi, Zhen Shen. Modulation of the molecular spintronic properties of adsorbed copper corroles. Nature Communications 2015, 6
(1)
https://doi.org/10.1038/ncomms8547
- . Molecular Spintronics. 2015, 295-328. https://doi.org/10.1002/9783527690541.ch17
- Tadahiro Komeda. Spins of adsorbed molecules investigated by the detection of Kondo resonance. Surface Science 2014, 630 , 343-355. https://doi.org/10.1016/j.susc.2014.07.012
- Yu Zhu, Yan-Mei Wang, Ji Xu, Pan Liu, H.A.B.M.D. Weththasinha, Yun-Long Wu, Xiao-Qing Lu, Ji-Min Xie. Syntheses, structures, molecular and cationic recognitions and catalytic properties of two lanthanide coordination polymers based on a flexible tricarboxylate. Journal of Solid State Chemistry 2014, 219 , 259-264. https://doi.org/10.1016/j.jssc.2014.07.029
- Tadahiro Komeda, Keiichi Katoh, Masahiro Yamashita. Double-decker phthalocyanine complex: Scanning tunneling microscopy study of film formation and spin properties. Progress in Surface Science 2014, 89
(2)
, 127-160. https://doi.org/10.1016/j.progsurf.2014.03.001
- Lapo Bogani. Experiments on Molecular Magnets for Molecular Spintronics. 2014, 331-381. https://doi.org/10.1007/430_2014_170
- Reza Kakavandi, Sabine-Antonia Savu, Andrea Caneschi, Thomas Chassé, Maria Benedetta Casu. At the interface between organic radicals and TiO2(110) single crystals: electronic structure and paramagnetic character. Chemical Communications 2013, 49
(86)
, 10103. https://doi.org/10.1039/c3cc45693e
Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.
Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.
The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated.