Synthesis of electroactive molecular clips for a supramolecular recognition of neutral molecules

Date du colloque&nbsp;: 07/2009</p

Synthèse et propriétés de clips et paniers moléculaires électro- ou photoactifs pour une reconnaissance supramoléculaire

Date du colloque&nbsp;: 09/2010</p

Synthesis and properties of electro or photoactive molecular clips and baskets for a supramolecular recognition

Date du colloque&nbsp;: 05/2009</p

Synthèse de clips moléculaires électroactifs pour la reconnaissance supramoléculaire de molécules neutres planes ou tridimensionnelles

National audienc

A Fused Donor−Acceptor System Based on an Extended Tetrathiafulvalene and a Ruthenium Complex of Dipyridoquinoxaline

An application of the Horner−Wadsworth−Emmons reaction carried out on a ruthenium compound as the electrophilic precursor is described for the synthesis of fused donor−acceptor system 1 based on an extended tetrathiafulvalene and a ruthenium complex of dipyridoquinoxaline units

Molecular clips and tweezers hosting neutral guests

Intense current interest in supramolecular chemistry is devoted to the construction of molecular assemblies displaying controlled molecular motion associated to recognition. On this ground, molecular clips and tweezers have focused an increasing attention. This tutorial review points out the recent advances in the construction of always more sophisticated molecular clips and tweezers, illustrating their remarkably broad structural variety and focusing on their binding ability towards neutral guests. A particular attention is brought to recent findings in dynamic molecular tweezers whose recognition ability can be regulated by external stimuli. Porphyrin-based systems will not be covered here as this very active field has been recently reviewed

Dual Signaling System with an Extended-Tetrathiafulvalene–Phenanthroline Dyad Acting as an Electrooptical Cation Chemosensor

A tetrathiafulvalene donor has been annulated to 2,3-di(1H-2-pyrrolyl)quinoxaline affording a new chemosensor 1, which shows a unique optical selectivity and reactivity for the fluoride ion over other anions in CH2Cl2 leading to a colorimetric response. Electrochemical polymerization of 1 occurred in the presence of fluoride

Synthesis of glycoluril-tetrathiafulvalene molecular clips for electron-deficient neutral guests through a straightforward Diels–Alder strategy

An electroactive molecular clip incorporating tetrathiafulvalene (TTF) sidewalls grafted on a glycoluril platform has been synthesized using a straightforward Diels–Alder strategy. This way of attachment to the glycoluril U-shape scaffold afforded a rigidified and closed receptor for which the electron-rich TTF pincers are expected to be at a suitable distance for sandwiching neutral guests through donor–acceptor interactions. The efficient complexation ability of this host architecture toward one molecule of tetracyanoquinodimethane derivative (F4-TCNQ) in solution has been demonstrated using cyclic voltammetry and UV-Visible titration methods

Surface Functionalization by Monolayers of Thiophene-based pi-Conjugated Systems

Date du colloque&nbsp;: 09/2009</p