Publications de Laurent Alexis Clément Vannay

Bio-Enhanced Neoligaments Graft Bearing FE002 Primary Progenitor Tenocytes: Allogeneic Tissue Engineering & Surgical Proofs-of-Concept for Hand Ligament Regenerative Medicine

Sandra Jaccoud, Nathalie Hirt-Burri, Philippe Abdel Sayed, Corinne Scaletta, Lee Ann Laurent-Applegate, Laurent Alexis Clément Vannay, Joachim Meuli, Cédric Peneveyre, Alexis Laurent, Annick Jeannerat, Axelle Thomas

Hand tendon/ligament structural ruptures (tears, lacerations) often require surgical reconstruction and grafting, for the restauration of finger mechanical functions. Clinical-grade human primary progenitor tenocytes (FE002 cryopreserved progenitor cell so ...

MDPI2023

Industrial Biotechnology Conservation Processes: Similarities with Natural Long-Term Preservation of Biological Organisms

Nathalie Hirt-Burri, Philippe Abdel Sayed, Corinne Scaletta, Lee Ann Laurent-Applegate, Laurent Alexis Clément Vannay, Alexis Laurent

Cryopreservation and lyophilization processes are widely used for conservation purposes in the pharmaceutical, biotechnological, and food industries or in medical transplantation. Such processes deal with extremely low temperatures (e.g., -196 degrees C) a ...

MDPI2023

Optical gap and fundamental gap of oligoynes and carbyne

Jan Cornelius Brauer, Laurent Alexis Clément Vannay, Anne-Clémence Corminboeuf, Holger Frauenrath, Stephen Schrettl, Emmanuel Romaric Contal, Eric Albert Georges Bremond

The optoelectronic properties of various carbon allotropes and nanomaterials have been well established, while the purely sp-hybridized carbyne remains synthetically inaccessible. Its properties have therefore frequently been extrapolated from those of def ...

Nature Research2020

Mechanistic study of the photo‐generation of hydrogen by decamethylruthenocene

Hubert Girault, Laurent Alexis Clément Vannay, Manuel Alejandro Méndez Agudelo, Heron Vrubel, Sunny Isaïe Maye, Micheal Diarmaid Scanlon, Pekka Eero Peljo, Lucie Josette Renée Rivier

Hydrogen evolution by decamethylruthenocene (Cp*2RuII) was studied in detail highlighting that metallocenes are capable of photo‐reducing hydrogen without the need of an additional sensitizer. Electrochemical, gas chromatographic and spectroscopic (UV/vis, ...

2019

DORI Reveals the Influence of Noncovalent Interactions on Covalent Bonding Patterns in Molecular Crystals Under Pressure

Laurent Alexis Clément Vannay, Anne-Clémence Corminboeuf, Berend Smit, Senja Dominique Barthel, Amber Kashan Mace, Benjamin André René Meyer

The study of organic molecular crystals under high pressure provides fundamental insight into crystal packing distortions and reveals mechanisms of phase transitions and the crystallization of polymorphs. These solid-state transformations can be monitored ...

2019

Overview and recommendations for regionalized life cycle impact assessment

Laurent Alexis Clément Vannay, Alexis Laurent, Xun Liao

Purpose Regionalized life cycle impact assessment (LCIA) has rapidly developed in the past decade, though its widespread application, robustness, and validity still face multiple challenges. Under the umbrella of UNEP/SETAC Life Cycle Initiative, a dedicat ...

SPRINGER HEIDELBERG2019

Extending the Scope of the Density Overlap Region Indicator

Laurent Alexis Clément Vannay

In this thesis, original applications of the Density Overlap Region Indicator (DORI), a density dependent bonding descriptor capable of simultaneously capturing covalent and noncovalent interactions, are discussed. The use of scalar fields, such as DORI, w ...

EPFL2018

Analyzing Fluxional Molecules Using DORI

Laurent Alexis Clément Vannay, Riccardo Petraglia, Michele Ceriotti, Giuseppe Sforazzini, Benjamin André René Meyer

2018

Salt-induced thermochromism of a conjugated polyelectrolyte

Laurent Alexis Clément Vannay, Anne-Clémence Corminboeuf, Natalie Renuka Banerji, Yauhen Sheima

We report here the photophysical properties of a water-soluble conjugated polythiophene with cationic side-chains. When dissolved in aqueous buffer solution (PBS, phosphate buffered saline), there is ordering of the polymer chains due to the presence of th ...

Royal Soc Chemistry2017

Photoproduction of Hydrogen by Decamethylruthenocene Combined with Electrochemical Recycling

Hubert Girault, Laurent Alexis Clément Vannay, Manuel Alejandro Méndez Agudelo, Grégoire Clément Gschwend, Micheal Diarmaid Scanlon, Pekka Eero Peljo, Lucie Josette Renée Rivier

The photoinduced hydrogen evolution reaction (HER) by decamethylruthenocene, Cp2RuII (Cp=C5Me5), is reported. The use of a metallocene to photoproduce hydrogen is presented as an alternative strategy to reduce protons without involving an additional phot ...

Wiley-Blackwell2017

Fluorescence Quenching in BODIPY Dyes: the Role of Intramolecular Interactions and Charge Transfer

Laurent Alexis Clément Vannay, Anne-Clémence Corminboeuf, Antonio Prlj

The fluorescence properties of the BODIPY dye and its two meso-substituted derivatives, tert-butyl- and phenyl-BODIPY, are rationalized. The non emissive behavior of the latter two are attributed to the energetically accessible low-lying conical intersecti ...

Wiley-Blackwell2017

Neutral Aminyl Radicals Derived from Azoimidazolium Dyes

Andrzej Sienkiewicz, Kay Severin, Rosario Scopelliti, Euro Solari, Philip Pattison, Laurent Alexis Clément Vannay, Henrik Moodysson Rønnow, Léonard Yannick Maurice Eymann, Ivica Zivkovic, Matthew Wodrich, Alexander Tskhovrebov, José Luis Bila

The synthesis and characterization of a new class of neutral aminyl radicals is reported. Monoradicals were obtained by reduction of azoimidazolium dyes with potassium. Structural, spectroscopic, and computational data suggest that the spin density is cent ...

2016