A composition of matter wherein the composition comprises a siliceous substrate having silanols on the surface and a polymer selected from the group consisting essentially of a water soluble polymer, a water soluble copolymer, an alcohol soluble polymer, an alcohol soluble copolymer, and combinations of such polymers, wherein the polymer is chemically bonded to the siliceous substrate by a silane linking material having the general formula

O.sub.3/2SiQY

that is derived from an alkoxy-functional silane having the general formula

(RO).sub.3SiQX

and processes for preparing the crosslinked polymer that is chemically bonded to the surface of the siliceous substrate.

The present invention relates to superficially porous particles (SPPs), also called core-shell, porous shell or fused core particles, which are state-of-the-art support materials used in the production of HPLC columns. Hydrolytically stable, highly selective superficially porous particle (SPP) hydrophilic interaction liquid chromatographic (HILIC) stationary phases having higher efficiencies and shorter retention times than analogous stationary phases on fully porous particles (FPP) is provided.

The present invention relates to a device consisting of a glass container, the inner walls of which have been modified after successive activation, silanisation and amidation reactions to house a porous crystalline coating. Said coating, which has the atomic sequence SiOR-M-MOF, is covalently bonded to the inner wall of the container in an inverted radial manner, where R may be A) Si(CH.sub.2).sub.3NHCH(O)(C.sub.6H.sub.4)COO; B) Si(CH.sub.2).sub.nNHCH(O)(CH.sub.2).sub.2(C.sub.2HN.sub.3)(CH.sub.2).sub.n(C.sub.6H.sub.4)COO; C) Si(CH.sub.2).sub.nOCH.sub.2CH(OH)CH.sub.2NH(CH.sub.2).sub.n(C.sub.6H.sub.4)COO; D) Si(CH.sub.2).sub.nS(CH.sub.2).sub.2(CH.sub.2).sub.n(C.sub.6H.sub.4)COO, and M is a metal dependent on the type of MOF. The container can be used for the extraction and pre-concentration of analytes present in samples of different natures, from environmental to biological. The invention also relates to the use thereof for dosing medicines or for colouring or flavouring beverages.

The present disclosure relates to a redox active materials comprising at least one 2,5-dithio-7-azabicyclo[2.2.1]heptane unit connected to a surface thereof, as well as processes for making said redox active materials. The present disclosure relates to a method for recovering a metal, comprising reacting a metal in oxidized state with the redox active material herein disclosed. The present disclosure relates to uses of redox active materials herein disclosed in sensors, electronic materials and for extracting various metals.