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Head of the research group

Laurent RUHLMANN
Professeur Unistra

Group's website

http://lecpcsunistra.wixsite.com/unistra-lecpcs

Location

Le Bel Institute, 8th floor North

Secretarial and accounting services provided by

Paola SAGER
email: paola.sager@unistra.fr
Phone : +33 (0)3 68 85 12 41

Permanent members

Non-permanent members

PhD students

• Jules WOLFF

• Ning LIANG

• Jing SUN

• Zhiwai CAI

• Yanzi LIN

Description of the research group

The research activities carried out in the laboratory concern electrode mechanisms, interfacial electrochemistry and the property-structure relationship of nano-objects developed at an interface.
The analysis of mechanisms as well as the determination of the kinetic and thermodynamic characteristics of electron transfer (s) allowed us to acquire, for many years, an undeniable expertise in the analysis of complex molecular systems and molecular architectures of nanometric scales.
This research topic is by nature very interdisciplinary. In addition to understanding and replicating the properties of natural systems, this research topic is very closely linked to the development of molecular nanosystems whose functioning involves the intra or extramolecular transfer of electrons.
The efficiency of energy conversion devices or nanoelectronic properties can be greatly enhanced by the use of nanostructured hybrid materials (e.g., organized networks of active nanoparticles or self-assembled materials). One of the goals of our research is to understand and control the electrocatalytic processes at nanostructured interfaces in the perspective of application to energy conversion. Another goal concerns the study of the organization of nanomaterials formed in order to better rationalize the resulting properties.

Research topics

• Molecular electrochemistry
• Properties of nanoscale systems and molecular architectures
• Electrosynthesis
• Electropolymerization
• Electrocatalysis and environmental photocatalysis
• Nanostructured interfaces: electrocatalysis and energy conversion
• New self-assembled materials: organization and correlations structure reactivity

List of equipment and instruments

• Multifunction Potentiostats / Galvanostats: Linear voltammetry, impulse and transient, Electrochemical impedance methods, Disc and ring electrodes
• UV-Vis-NIR-IR spectrometers with diode array for spectroelectrochemistry (low temperature and ambient temperature)
• EQCM (electrochemical quartz microbalance)
• Arc Xe lamps
• Monochromator
• Glove box
• DEMS (Differential Electrochemical Mass Spectroscopy)

Selection of key publications

H. Dridi, A. Boulmier, P. Bolle, A. Dolbecq, J.-N. Rebilly, F. Banse, L. Ruhlmann,* H. Serier-Brault, R. Dessapt,* P. Mialane, O. Oms*
Directing the solid-state photochromic and luminescent behaviors of spiromolecules with Dawson and Anderson polyoxometalate units
J. Mat. Chem. C, 2020, 8, 637 - 649, DOI: 10.1039/c9tc05906g

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M. Boudiaf, Y. Liang, R. Lamare, J. Weiss, H. Ibrahim, M. Goldmann, E. Bentouhami, V. Badets, Sylvie Choua, N. Le Breton, A. Bonnefont, L. Ruhlmann*
Stable isoporphyrin copolymer: Electrochemical mechanism and behavior and photovoltaic properties
Electrochimica Acta, 2019, 309, 432-449

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J. V. Milic, T. Schneeberger, M. Zalibera, F. Diederich,* C. Boudon, L. Ruhlmann*
Spectro-electrochemical toolbox for monitoring and controlling quinone-mediated redox-driven molecular gripping
Electrochimica Acta, 2019, 313, 544-560

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J. C. Kemmegne-Mbouguen, S. Floquet,*D. Zang, A. Bonnefont, L. Ruhlmann,* C. Simonnet-Jégat, X. López,* M. Haouas, E. Cadot
Electrochemical properties of the [SiW₁₀O₃₆(M₂O₂E₂)]^6- polyoxometalates series (M = Mo(V) or W(V); E = S or O)
New Journal of Chemistry, 2019, 43, 1146-1155

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A. G. Oshchepkov*,  G. Braesch, S. Ould-Amara, G. Rostamikia, G. Maranzana, A. Bonnefont, V. Papaefthimiou, M. J. Janik, M. Chatenet*, E. R. Savinova
Nickel Metal Nanoparticles as Anode Electrocatalyst for Highly-Efficient Direct Borohydride Fuel   Cells
ACS Catalysis, 2019, 9, 8520-8528

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J. V. Milić, T. Schneeberger, M. Zalibera, K. Z. Milowsk, Q. K. Ong, N. Trapp, L. Ruhlmann, C. Boudon, C. Thilgen, F. Diederich
Thioether-Functionalized Quinone-Based Resorcin[4]arene Cavitands:Electroswitchable Molecular Actuators
Helv. Chim. Acta 2019, 102, e1800225

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V. García-López J. V. Milic, M. Zalibera, D. Neshchadin, M. Kuss-Petermann, L. Ruhlmann, J. Nomrowski, N. Trapp, C. Boudon, G. Gescheidt, O. S. Wenger, F. Diederic
Light-actuated resorcin[4]arene cavitands
Tetrahedron, 2018, 74, 5615e5626

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Z. Huo, A. Bonnefont, Y. Liang, R. Farha,M. Goldmann, E. Saint-Aman, H. Xu, C. Bucher, L. Ruhlmann*
Photovoltaic properties of supramolecular assemblies obtained by incorporation of Preysler’s type polyoxometalate in a polycationic copolymer of porphyrin.
Electrochimica Acta, 2018, 274, 177-191

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A. Boulmier, A. Vacher, D. Zang, S. Yang, A. Saad, Je. Marrot, O. Oms, P. Mialane, I. Ledoux, L. Ruhlmann, D. Lorcy, A. Dolbecq
Anderson-Type Polyoxometalates Functionalized by Tetrathiafulvalene Groups: Synthesis, Electrochemical Studies, and NLO Properties
Inorg. Chem., 2018, 57, 3742-3752

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J. Milić, M. Zalibera, D. Talaat, J. Nomrowski, N. Trapp, L. Ruhlmann, C. Boudon, O. S. Wenger, A. Savitsky, W. Lubitz, F. Diederich
Photoredox-Switchable Resorcin[4]arene Cavitands: Radical Control of Molecular Gripping Machinery via Hydrogen Bonding
Chem. Eur. J., 2018, 24, 1431-1440

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G. Liu, X. Yang, A. Bonnefont, Y. Lv,* J. Chen, W. Dan, Z. Chen, L. Ruhlmann,* D. S. Wright, C. Zhang,*
Conjugated hybrid films based on a new polyoxotitanate monomer
Chem. Comm. 2018, 54, 14132-14135

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G. Braesch, A. Bonnefont, V. Martin, E. R. Savinova, M. Chatenet
Borohydride oxidation reaction mechanisms and poisoning effects on Au, Pt and Pd bulk electrodes: From model (low) to direct borohydride fuel cell operating (high) concentrations
Electrochemica Acta, 2018, 273, 483-494

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I. Azcarate, Z. Huo, R. Farha, M. Goldmann,H. Xu, B. Hasenknopf, E. Lacôte, L. Ruhlmann*
Generation of Photocurrent from Visible Light Irradiation of Conjugated Dawson Polyoxophosphovanadotungstate-Porphyrin Copolymers
Chem. Eur. J. 2015, 21, 8271-8280

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D. Schaming, Y. Xia, R. Thouvenot, L. Ruhlmann*
An original electrochemical pathway for the synthesis of porphyrin oligomers
Chem. Eur. J. 2013, 19,1712-1719

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J. Milic, M. Zalibera, I. Pochorovski, N. Trapp, J. Nomrowski, D. Neshchadin, L. Ruhlmann, C. Boudon, O.S. Wenger, A Savitski, W. Lubitz, G. Gescheidt, F. Diederich
Paramagnetic Molecular Grippers: The Elements of Six-State Redox Switches
 J. Phys. Chem. Letters, 2016, 7, 2470-2477

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S. Bozdech, K. Krischer, A. Crespo, E. Savinova, A. Bonnefont
1/f² noise in bistable electrocatalytic reactions on mesoscale electrodes
Faraday Discussions, 2016,193, 187-205

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“Trends in polyoxometalate research”, Editors, L. Ruhlmann* and D. Schaming. Publisher: Nova Science Publishers Inc, Imprint: Nova Science Publishers Inc, ISBN-13: 9781634826563, Publication date: 1^st june 2015, Pages: 1-427.

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A small overview of our research group