Ladder-Like Versus Hexagonal Organic–Inorganic Hybrid Materials in the Extraction of Lead Ions

Photoinduced self-assembly of carboxylic acid-terminated lamellar silsesquioxane: highly functional films for attaching and patterning amino-based ligands

“…9 When the ultimate aim is not the fabrication of mesoporous materials, the major route for synthesizing nanostructured hybrids has been the direct template-free self-assembly of silsesquioxane precursors, usually leading to lamellar structures. Recently, Mehdi et al reported several multi-step routes to yield amino-, thiol-, 21 sulfonic acid-, 21 carboxylic acid- [22][23][24][25] and phosphonic acid-23 functionalized lamellar hybrids. This has imposed strict constraints on precursor architecture and synthesis conditions, which account for the fact that the long-range molecular ordering of most organosilica hybrids has remained very challenging.…”

“…There have been very few examples of such 'active' nanostructured silsesquioxanes, containing for example photosensitive (azobenzene, 14 diacetylene, 15 perylenediimide 16 ) or conductive organic groups (crown ether, 17 perylene [18][19][20] ). Recently, Mehdi et al reported several multi-step routes to yield amino-, thiol-, 21 sulfonic acid-, 21 carboxylic acid- [22][23][24][25] and phosphonic acid-23 functionalized lamellar hybrids. The high density of reactive and accessible end groups arranged within a robust lamellar mesostructure was exploited for the chelation of transition metals and lanthanides in separation applications.…”