Search
The Observation of low Gyromagnetic ratio nuclei in biomaterial Environments Through Hyperpolarization Enhanced magnetic Resonance
Elements such as Ca and Mg are crucial in many synthetic and natural materials, including bones and teeth. The intrinsic structural complexity of these materials calls for the development of original and advanced characterization techniques. New and promising preliminary results obtained by 43Ca D
Order and acidity in zeolites promoted by organic structure directing agents. New NMR approaches, modelling and reactivity
Advances in solid-sate NMR characterisation and modelling by Quantum Mechanics methods lead to an important renewal of zeolite research. Our project is thought as a key step in this field. The global objective is to determine the nano-scale organization of zeolites with complex topology (e.g. MFI) i
Bridge Functional in Molecular DFT
The ultimate objective in the present scientific domain is to be able to calculate theoretically, as efficiently as possible, the solvation properties of molecules, macromolecules, interfaces immersed in various solvents. Direct applications can be obviously found in biology, in colloidal physics, i
Conformational design for high throughput MS/MS reading of digital polymers
The general scientific context of the shapeNread project is massive and long-term data storage, with the need for alternative media to hard disks that are currently employed and require energy-consuming data centers to store quintillion bytes of data generated every day. A key issue is to increase s
Computation of Resonant Inelastic X-ray Scattering in the condensed phase across the whole periodic table
Processes involving the excitation or ionization of core electrons are very usefu for the characterization of matter in the microscopic scale: they are very selective with respect to the atomic center being probed, and very sensitive to the chemical environment surrounding this center. Experimental
Multiple trajectories towards excited states
This project requires improving the capabilities of the already existing ultrafast optical spectroscopy laboratory of the ?Institute of Physics of University of Rennes 1 (?P1?) and of the X-ray spectrometers and diffractometers at the Bernina instrument at the Free Electron Laser (FEL) ?SwissFEL. In
Intersystem crossing in fluorescent proteins as a novel mechanism for dynamic contrast in confocal fluorescence microscopy
Although ubiquitously used as fluorescent probes in biological imaging, fluorescent proteins (FPs) of the GFP family exhibit a variety of photochemical reactions, which mechanisms are still incompletely understood. Some of these reactions led to innovative applications. Thus, dynamic contrast micros
Enhancing NMR sensitivity with diamond nitrogen-vacancy centres
Dynamic nuclear polarisation (DNP) is a powerful method that enhances NMR sensitivity by transferring the large spin polarisation of electrons to nuclei. But DNP is also limited because it requires cryogenic temperatures and paramagnetic doping that lower resolution and sensitivity. A much better
Light UpConverting ASsemblies
The LUCAS project aims at developing molecular and supramolecular devices for photonic upconversion (UC) in aqueous solutions at room temperature and to study them by microscopy. In these assemblies, the funneling of energy transfer will optimize the piling up of intermediate excited states to achie
QUAntitative Spectroscopy for Atmospheric Remote Sensing: from IR/THz simultaneous measurements to satellite remote sensing
Measuring trace gases having a notable impact on human health, climate and the stability of the ozone layer constitutes an extremely important challenge. In the coming years, new, higher sensitivity satellite instruments will improve atmospheric sounding only if the necessary spectral parameters are
Circularly polarized luminescence of lanthanide-based single-molecule-magnets
The SMMCPL project aims at investigating both experimentally and theoretically the synergy between Single-Molecule Magnet (SMM) behaviour and Circularly Polarized Luminescence (CPL) in chiral lanthanide-based mononuclear complexes. Indeed, the magnetic-dipole f-f transitions responsible for the enha
Separation and identification of isomeric metabolites integrated to mass spectrometry for the diagnosis of metabolic diseases
The objectives of this project are twofold and range from fundamental understanding of the separation process of isomers using differential mobility spectrometry (DMS) hyphenated to tandem mass spectrometry (MS/MS) to developing robust methodologies for isomer identification and quantification for t
Ultrafast Reactivity of Biomolecules under Irradiation
The main objectives of RUBI are twofold. One is methodological, the other one is applicative. On the methodological side, the objective is to develop an hybrid scheme cpupling DFTB and MMpol in the software deMon-Nano, The other one is a transition scheme between BOMD and Ehrenfest MD in deMn2k. -
Multimodal imaging combining Raman and mass spectrometry applied to tuberculosis
On the one hand, as an emerging and challenging strategy multimodal imaging combining Raman Scattering (RS) and Matrix-Assisted Laser Desorption/Ionization (MALDI) MSI needs further improvements: 1) optimization of a stringent and common sample preparation including cryo-sectioning and accurate iden
Innovative analytical methodologies for biotherapeutics analysis in biological samples
Monoclonal antibodies (mAbs) are enjoying significant success as a therapeutic agent. This advantage is explained in particular by a favorable half-life as well as the possibility of specifically targeting the associated antigen. Due to their recent introduction as a therapeutic agent, the evolution
Quantum Dynamics of the Diffusion of Adsorbates
Heterogeneous catalysis is an essential process for the world's economy and its sustainable growth. While progress to its understanding has been made in the past decades, many elementary steps remain unresolved, such as the diffusion of the chemically reacting adsorbates on the catalytic substrate.
Dual-Color Photoswitchable Fluorescent Probes for Advanced Bioimaging
Photoconvertible fluorescent molecules are powerful tools in bioimaging to unambiguously track labeled biomolecules over large spatiotemporal scales. In this field photoconvertible fluorescent proteins are predominant but suffer from several drawbacks. Conversely molecular probes are characterized b
A Complex Adiabatic Connection for electronic states
Processes related to electronically excited states are central in chemistry, physics, and biology, playing a key role in ubiquitous processes such as photochemistry, catalysis, and solar cell technology. However, defining an effective method that reliably provides accurate excited-state energies re
DESigning Correlated And Reduced Theories for Electronic Structures
For n-interacting electron systems, numerical diagonalization is limited to Hamiltonians of few tens of electrons on classical computers. Thus a physically motivated and transferable approach to divide this intractable N-interacting particle problem into multiple sub interacting embedded systems tha
Mixture analysis by NMR under spin diffusion conditions
The identification of organic molecules in mixture is a crucial issue in the vast majority of human activities related to chemistry (healthcare, energy, materials, etc.). Transformation processes that lead from natural resources, either from fossil carbon industry or biomass exploitation, to low-val
Developing Serial X-ray Crystallography Methods for Hybrid Energy Systems
Developing Serial X-ray Crystallography Methods for Hybrid Energy Systems Metal Organic Frameworks (MOFs) and PolyOxoMetalates (POMs) are crystalline materials at the forefront in the design of novel energy storage and conversion systems. The functionalities of MOFs and POMs can be rationally