Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique

Stéphane Brandes

Roger Guilard

Henry Ledon

Robert J Corriu

Catherine Reye

Ahmad Mehdi

Chloé Thieuleux

Jean-Michel Barbe

Pierre Montmeat

Franck Denat

Eric Pasquinet

Lionel Hairault

Bruno Roux-Fouillet

Gabriel Canard

François Jerome

Géraud Dubois

Claude Gros

Compounds of formula (I) are disclosed.  The tetrapyrole ring in formula (I) can be substituted with a metal cation (M); R, R, Rand Rseparately represent a hydrogen atom, a C1-4 alkyl or alkyloxy radical, or a phenyl radical optionally substituted by vinyl, hydroxy, nitro, amino, bromo, chloro, fluoro, iodo, benzyloxy, or hydroxymethyl radicals; R, R, Rand Rseparately represent a hydrogen atom or a C1-4 alkyl radical; R, Rand Rseparately represent a hydrogen atom, a C1-4 alkyl or alkyloxy radical optionally substituted by a halogen, or a phenyl radical optionally substituted by vinyl, hydroxy, nitro, amino, bromo, chloro, fluoro, iodo, benzyloxy, or hydroxymethyl radicals, wherein at least one of R, R, and Ris a phenyl radical. Compounds of formula (I) bound to a silica, a sol-gel material or a mesoporous silica are useful for selective trapping of carbon monoxide.

Materials for selective trapping of carbon monoxide

The invention relates to the use of molecular tweezers as sensitive materials in chemical sensors intended to detect or assay organic compounds in the vapour state, and in particular nitro compounds. These molecular tweezers correspond to the general formula (I): in which: Fields of application: detection of explosives, control and monitoring of atmospheric pollution and of the quality of ambient air in relatively confined spaces, and monitoring of industrial sites.

Use of molecular tweezers as sensitive materials in chemical sensors for detecting or assaying organic compounds in the vapour state

The invention concerns a method for preparing organic-inorganic hybrid materials with controlled porosity and functionality comprising hydrolysis and condensation polymerization of a compound of formula (I): Z-R&#x2014;Si(OR)(OR')(OR&#x2033;), with an alkaline or alkaline-earth silicate in a mol ratio of (I)/(silicate)=1:9, in the presence of a non-ionic surfactant, to form a mesoporous silica represented by Z-R&#x2014;SiO9 SiO, whereon is then anchored an organic compound, represented by (&#x394;)N&#x2014;H, comprising a &#x2014;NH&#x2014; group capable of reacting with Z, to form a functionalized mesoporous silica represented by (&#x394;)N&#x2014;R&#x2014;SiO9 SiO, which is optionally complexed with a metallic cation to form an organometallic complex. The invention also concerns the use of these materials to separate gases.

Mesoporous organic-inorganic hybrid materials for separating gases

The invention concerns a method for preparing organic-inorganic hybrid materials with controlled porosity and functionality comprising hydrolysis and condensation polymerization of a compound of formula (I): Z-R&#x2014;Si(OR)(OR')(OR&#x2033;), with an alkaline or alkaline-earth silicate in a mol ratio of (I)/(silicate)=1:9, in the presence of a non-ionic surfactant, to form a mesoporous silica represented by Z-R&#x2014;SiO9 SiO, whereon is then anchored an organic compound, represented by (&#x394;)N&#x2014;H, comprising a &#x2014;NH&#x2014; group capable of reacting with Z, to form a functionalized mesoporous silica represented by (&#x394;)N&#x2014;R&#x2014;SiO9 SiOwhich is optionally complexed with a metallic cation to form an organometallic complex. The invention also concerns the use of these materials to separate gases.

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Dijon, France

Stéphane Brandes