A5016136653- Crystallization and Solubility Studies
- X-ray Diffraction in Crystallography
- Synthesis and Properties of Aromatic Compounds
- Dendrimers and Hyperbranched Polymers
- Chemical Synthesis and Analysis
- Crystallography and molecular interactions
- Synthetic Organic Chemistry Methods
- Photochromic and Fluorescence Chemistry
- Cyclization and Aryne Chemistry
- Asymmetric Synthesis and Catalysis
- Ferrocene Chemistry and Applications
- Porphyrin and Phthalocyanine Chemistry
- Luminescence and Fluorescent Materials
- Molecular Junctions and Nanostructures
- Catalytic Alkyne Reactions
- Synthesis of Indole Derivatives
- Organic Electronics and Photovoltaics
- Fullerene Chemistry and Applications
- Organoboron and organosilicon chemistry
- Click Chemistry and Applications
- Synthesis and characterization of novel inorganic/organometallic compounds
- Oxidative Organic Chemistry Reactions
- Synthesis and Characterization of Pyrroles
- Metal-Catalyzed Oxygenation Mechanisms
- Organometallic Complex Synthesis and Catalysis
Centre National de la Recherche Scientifique
2015-2024
Laboratoire de Chimie de Coordination
2015-2024
Université Toulouse III - Paul Sabatier
2015-2024
Université de Toulouse
2015-2024
Changzhou University
2018
University of KwaZulu-Natal
2018
Japan Tobacco (Japan)
2018
RIKEN
2018
The University of Tokyo
2018
Indian Institute of Science Education and Research Kolkata
2018
α-Graphyne, a carbon-expanded version of graphene ('carbo-graphene') that was recently evidenced as an alternative zero-gap semiconductor, remains theoretical material. Nevertheless, using specific synthesis methods, molecular units α-graphyne ('carbo-benzene' macrocycles) can be inserted between two anilinyl (4-NH2-C6H4)-anchoring groups allow these fragments to form junctions gold electrodes. Here, electrical measurements by the scanning tunnelling microscopy (STM) break junction technique...
A third generation dendron possessing one activated vinyl group linked to the core and 16 chlorines surface has been functionalized with various groups at (primary amine, phosphine, or azide), on (aldehyde, tertiary nitrile). These dendrons are used as building blocks for synthesis of several complex dendritic architectures, obtained through core−core, core−surface, core−core−surface−core couplings using very simple one-step reactions between these functions, such Michael additions primary...
Metalladendrimers of generation 3 with either 24 terminal palladium or ruthenium diphosphine complexes one complex located at the core have been found to be efficient, recoverable catalysts in three general organic reactions: Stille couplings, Knoevenagel condensations, and Michael additions.
Bridging the generation gap: Building up molecules of considerable molecular weight in a step-by-step manner from small units generally consumes energy and produces lot waste. This is not case here since only three steps are necessary to built dendrimer 3 (MW around 265 000), bearing 750 phosphanyl end groups, with production environmentally friendly byproducts: water dinitrogen. The scheme shows two-step formation 2 (G2) components AB5 CD5. Supporting information for this article available...
Since the discovery of cisplatin in 1960s, search for metallo-drugs that are more efficient than platinum complexes with negligible side effects has attracted much interest. Among other metals have been examined potential applications as anticancer agents is copper. The interest copper was recently boosted by cuproptosis, a evidenced form cell death mediated However, also known to induce proliferation cancer cells. In view these contradictory results, there need find most suitable chelators,...
A new straightforward method of synthesis dendrimers, using two branched monomers (CA(2) and DB(2)), is described. Each generation obtained in a single quantitative step, with only N(2) or H(2)O as byproducts; 4 four steps. The end groups are alternatively phosphines hydrazines; their versatile reactivity illustrated by the reaction CD(5) monomer, which increases number step from 48 to 250.
Dendrimers constitute a new class of macromolecules having hyperbranched and perfectly defined structure. The attractive beauty these nanosized compounds induces since ten years an exponential development the number publications devoted to this topic. Most dendrimers are purely organic compounds, but heteroatom-containing also play role in field. Among them, phosphorus derivatives, either at each branching point or only part structure (either on surface, core, special places within...
Palladium complexes of a variety β- and γ-iminophosphines have been prepared characterized by X-ray diffraction studies. Their properties as catalyst for three different Stille coupling reactions investigated compared to catalytic performances phosphorus-containing dendrimer incorporating analogous γ-iminophosphine palladium on the surface.
When targeting the quadrupolar p-dianisyltetraphenyl-carbo-benzene by reductive treatment of a hexaoxy-[6]pericyclyne precursor 3 with SnCl(2)/HCl, strict control conditions allowed for isolation three C(18)-macrocyclic products: targeted aromatic carbo-benzene 1, sub-reduced non-aromatic carbo-cyclohexadiene 4A, and an over-reduced dihydro-carbo-benzene 5A. Each them was fully characterized its absorption NMR spectra, which were interpreted comparison calculated spectra from static...
A ring carbo-mer of naphthalene, C32 Ar8 (Ar=p-n-pentylphenyl), has been obtained as a stable blue chromophore, after 19-step synthetic route involving methods inspired from those used in the synthesis carbo-benzenes, or specifically devised for present target, like double Sonogashira-type coupling reaction. The last step is SnCl2 /HCl-mediated reduction decaoxy-carbo-decalin, which prepared through successive [8+10] macrocyclization steps. Two carbo-benzene references are also described,...
Phosphorus-containing dendrimers of first, second, and third generation with various peripheral functional groups bearing a hydrolyzable Si(OEt)3 group at the core have been prepared. Two synthetic routes were used: either was introduced from start by reaction (EtO)3Si(CH2)3PPh2 an azide according to Staudinger (A series dendrimers) or grafted in last step 3-aminopropyltriethoxysilane vinyl (B dendrimers). The silylated characterized elemental analyses 1H, 13C, 31P, 29Si NMR spectroscopies....
Generalization of the Hückel rule predicts that (anti)aromaticity a neutral ring is qualitatively reverted upon single twist π-orbital array (Möbius interconversion), and preserved expansion all bonds by C 2 units (ring carbo- merization). These opposite effects are addressed from quantitative theoretical experimental standpoints, respectively. (i) According to most resonance energy (RE) schemes, RE value Möbius not version. This also applies Aihara’s Trinajstic’s topological (TRE), where...
A series of stable quadrupolar bis(p-aminophenyl)-carbo-benzenes, featuring both donor–donor–donor π-frustration and central macro-aromaticity, is described compared to the acyclic dibutatrienylacetylene (DBA) reference series.
The synthesis, crystal and electronic structures, one- two-photon absorption properties of two quadrupolar fluorenyl-substituted tetraphenyl carbo-benzenes are described. These all-hydrocarbon chromophores, differing in the nature linkers between fluorenyl substituents carbo-benzene core (C-C bonds for 3 a, C-C=C-C expanders b), exhibit quasi-superimposable one-photon (1PA) spectra but different (2PA) cross-sections σ2PA. Z-scan measurements (under NIR femtosecond excitation) indeed showed...