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Affichage des publications 41 à 50 sur 861 au total

Histoire

De la chimie avant la chimie. Au fil des textiles minéralisés, du 16e au 20e siècle

L’identification graduelle des textiles archéologiques par les « antiquaires » de l’époque moderne (XVI-XVIIIe siècle) conduit à s’interroger sur l’histoire de la perception de ces vestiges. Cette histoire rejoint celle de la proto-chimie…

Loïc Bertrand, Agathe Chave, Corentin Reynaud, Étienne Anheim

L'Actualité Chimique -

Héritage culturel et muséologie

Retour d’expérience, retour à l’expérience. Une revisite du vocabulaire, des images et des protocoles de l’étude synchrotron des vernis de lutherie

Cette contribution part de l’expérience de nombreuses « manips » entre 2006 et 2014, dans le cadre d’un projet portant sur l’étude des techniques de vernissage dans la fabrication des instruments de musique en Europe entre le XVIe et le XVIIIe…

Jean-Philippe Échard, Loïc Bertrand, Étienne Anheim

Technè -

Chimie

Palladium‐Catalyzed Indirect and Regioselective Phosphonation of Azobenzenes: Toward the Design of Water‐Soluble Photoswitches

An efficient palladium‐catalyzed ortho C−H acyloxylation of azobenzenes, allowing the introduction of the difunctionalised substituent, diethylphosphonoacetate, is reported. Thanks to the mild reaction conditions implemented, this regioselective…

Ivanna Amarsy, Nicolas Gigant, Izel Erturk, Nicolas Bogliotti, Delphine Joseph, Sandrine Delarue-Cochin

European Journal of Organic Chemistry -

Matériaux

Spatial distribution of the photopolymerization induced by localized surface plasmons: impact of the morphology of the Au nanoparticles

The analysis of the local distribution of the electric field, induced by localized surface plasmon resonance (LSPR), is crucial for selecting the morphology of gold nanoparticles (AuNPs) for specific applications. The reported study is based on an…

Amine Khitous, Céline Molinaro, Stephania Abdallah, Minyu Chen, Sylvie Marguet, Guillaume Laurent, Loïc Vidal, Jean-Pierre Malval, Céline Fiorini-Debuisschert, Pierre-Michel Adam, Ludovic Douillard, Renaud Bachelot, Olivier Soppera

Journal of Physical Chemistry C -

Chimie

Positive Electrofluorochromism of BODIPY–Ferrocene Monolayers on ITO

A borondipyrromethene (BODIPY)–ferrocene dyad where both units are connected by an ethynylstyryl linker was synthesized, and its fluorescence and electrochemical and electrofluorochromic features were analyzed first in solution and then as a surface…

Julie Pham, Jean-Frédéric Audibert, Jad Rabah, Karen Wright, Jérôme Marrot, Minh-Huong Ha-Thi, Rachel Méallet-Renault, Emmanuel Allard, Fabien Miomandre

Journal of Physical Chemistry C -

Zoologie des vertébrés

Anthropogenic modification of a giant ground sloth tooth from Brazil supported by a multi-disciplinary approach

Identifying evidence of human modification of extinct animal remains, such as Pleistocene megafauna, is challenging due to the similarity of anthropogenic and non‐anthropogenic taphonomic features observed under optical microscopy. Here, we re…

Thaís R Pansani, Loïc Bertrand, Briana Pobiner, Anna K Behrensmeyer, Lidiane Asevedo, Mathieu Thoury, Hermínio I Araújo-Júnior, Sebastian Schöder, Andrew King, Mírian L. A. F. Pacheco, Mário A. T. Dantas

Scientific Reports -

Chimie

Be Clean, Be Green. Perceptions of “cleanliness” in the history and reflection on the cleaning treatments of silver in modern conservation practice

In modern conservation practice, cleaning is a regular treatment for heritage objects. It is executed with the aim of restoring their (perceived) original aesthetics and improving their legibility, while reinforcing their physical and chemical…

Han Zhou, Maartje Stols-Witlox, Loïc Bertrand

AHM Conference 2024: 'Heritage, Memory and Material Culture' -

ou physique

Photoejection–recapture of the Ca2+ cation studied by time resolved spectroscopy and TDDFT calculations: the case study of an azacrown–iridium(III) complex

In this study, we examined the photophysical properties of an azacrown–iridium(III) complex while focusing on its interactions with calcium ions (Ca2+). We explored the dynamic processes within the complex combining time-dependent density functional…

Clement Guerrin, L. de Thieulloy, Julien Dubois, Clément Barois, Aurélie Perrier, Isabelle Leray, Cedric Mongin, Stephane Aloise

New Journal of Chemistry -

Chimie

Archaeological mineralised textiles from the Iron Age tumulus of Creney-le-Paradis support its elite status

Les dégâts posés par le pillage et le labour au tumulus de Creney-le-Paradis (8e-5e avant J.-C.), en France, entravent l'interprétation de ce site potentiellement important. Néanmoins, l'application de nouvelles techniques de microtomographie en…

Clémence Iacconi, Elsa Desplanques, Christophe Moulherat, Maëva L'Héronde, Andrew King, Awen Autret, Sebastian Schöder, Barbara Fayard, Émilie Leccia, Loïc Bertrand

Antiquity -

Chimie

Thermodynamics of Oiling-Out in Antisolvent Crystallization. II. Diffusion toward Spinodal Decomposition

The extensive use of antisolvent crystallization for poorly soluble chemicals is hindered by oiling-out. This study delves into solute diffusion kinetics upon antisolvent addition. We conducted time-dependent simulations on a hypothetical…

Zhengyu Zhang, Jean-Frédéric Audibert, Weixi Wang, Valérie Génot, Soo Young Park, Anne Spasojević-de Biré, Robert Pansu

Crystal Growth & Design -

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