Matériaux Hybrides : Systèmes conjugués/ Silice

Matériaux Hybrides : Systèmes conjugués/ Silice
Polyélectrolytes conjugués précurseurs d’ionogels luminescents
Phenylene–ethynylene monomer and copolymer
bearing pendant imidazolium groups were
synthesized in order to obtain luminescent entities
highly soluble in ionic liquids (ILs). Their
stabilities under non-aqueous sol–gel conditions
(i.e. using formic acid) allowed their
incorporation into silica in the form of ionogels.
This was performed in a one step synthesis and
the resulting materials were found to be easily
processable as monoliths and showed interesting
luminescent properties. Given the high solubility
of 2,4-dinitrotoluene in the investigated IL, (1-
butyl-3-methylimidazolium
bis(trifluoromethylsulfonyl)imide), the relevance
of these ionogels as luminescent sensors was
tested.
One Pot Synthesis of fluorescent p-conjugated materials ; immobilization of phenylene ethynylene
polyelectrolytes in silica confined ionogels.
N. CHEMINET ; T. JARROSSON; J.-P . LERE-PORTE ; F . SEREIN-SPIRAU; L.A. CURY ; J. J. E.
MOREAU ; L. VIAU ; A. VIOUX. J. Mater. Chem,. 2011, 21, 13588-13593.
Fonctionnalisation de Nanoparticules de silice pour la délivrance de drogue
A therapy of cancer cells: Two-photon-triggered
camptothecin delivery (see picture) with
nanoimpellers was studied in MCF-7 breast
cancer cells. A fluorophore with a high two-
photon absorption cross-section was first
incorporated in the nanoimpellers. Fluorescence
resonance energy transfer (FRET) from the
fluorophore to the azobenzene moiety was
demonstrated.
Two-Photon-Triggered Drug delivery in Cancer Cells via Nanoimpellers
J. CROISSANT; M. MAYNADIER; A. GALLUD; H. P. N’DONGO, J. L. NYALOSASO ; G. DERRIEN ; C.
CHARNAY ; J.-O. DURAND, ; L. RAEM ; F. SEREIN-SPIRAU ; N. CHEMINET ; T. JARROSSON ; O.
MONGIN ; M. BLANCHARD-DESCE ; M. GARY-BOBO ; M. GARCIA ; J.LU ; F. TAMANOI ; D. TARN ;
T.M. GUARDADO-ALBAREZ ; J.I. ZINK. Angew. Chem.Ed. Engl. 2013, 52 (51) 13813-13817