Abstract: This invention concerns a versatile and simple one-pot method to prepare nanomaterials, and in particular nanoparticles, grafted with an ultra-thin layer of calixarenes by placing at 5 least one oxidized metal with at least one calix[n]arene diazonium salt in the presence of a reducing agent in a solvent, and heating the traction mixture to obtain a metal-based nanomaterial coated with calix[n]arenes. The invention further concerns the coupling of organic molecules or biomolecules to the calixarene-grafted nanomaterials in order to further functionalize the surface of the particles. The metal-based nanomaterial coated with 10 calix[n]arenes can for example be used in immunoassays.

Abstract: This invention relates to the direct grafting of a calixarene mostly onto the surface of a material, as well as to a grafting process, and certain calixarene intermediates useful for carrying the grafting process.

Abstract: This invention relates to the direct grafting of a calixarene mostly onto the surface of a material, as well as to a grafting process, and certain calixarene intermediates useful for carrying the grafting process.

Abstract: A calixarene directly grafted onto the surface of a material, a related grafting process, and certain calixarene intermediates useful for carrying out the grafting process.

Abstract: This invention relates to the direct grafting of a calixarene mostly onto the surface of a material, as well as to a grafting process, and certain calixarene intermediates useful for carrying the grafting process.

Abstract: 5′-substituted, 4′,5′-dihydropsoralen compounds (5) bearing tertiary amines (and salts thereof), quaternary ammonium moieties or organomercurial moieties are described. Also described are 2-substituted mercurimethyl-2-3-dihydro-benzofurans of forumla (7): Also reported are versatile direct syntheses through a hitherto unknown compounds such as 3-R-4,8-dimethyl-4′,5′-dihydro-5′-bromomethylpsoralen or a 3-R-4,8-dimethyl-4′, 5′-dihydro-5′-iodomethylpsoralen to prepare a structurally diverse array of partially reduced psoralens and benzofurans. The presence of a permanent ammonium charge in these psoralens precludes membrane passage and the mono-unsaturation precludes the cross-linking of nuclear DNA, thereby minimizing the mutagenic/carcinogenic side effects long associated with psoralen-derived therapies.