Anion Binding in Self-Assembled Monolayers in Mesoporous Supports (SAMMS)

Journal Article · Mon Feb 19 04:00:00 EST 2007 · Inorganic Chemistry Communications, 10(6):646-648

DOI:https://doi.org/10.1016/j.inoche.2007.02.014· OSTI ID:985059

Mattigod, Shas V; Fryxell, Glen E; Parker, Kent E

The binding of various anions to cationic transition metal complexes lining the pores of mesoporous silica is characterized and correlated to anion basicity. By lining the pore surfaces of mesoporous silica with self-assembled monolayer of organosilanes terminated with chemically selective ligands, a powerful new class of heavy metal sorbents has been realized, called self-assembled monolayers on mesoporous supports (SAMMS) [1-18]. When this interfacial functionality is composed of cationic transition metal complexes, a valuable new class of anion exchange material came into being [19]. Yoshitake and co-workers, have extended this concept to include other transition metal cations in similar cationic complexes inside mesoporous silica [20-23]. Other amine-based ligands (including polymer-based systems) were also explored, and the highest binding capacity was found with the diethylenetriamine ligand [20]. This synthetic strategy allows the chemist to easily modify both the metal center and ligand field, thereby tailoring chemical selectivity at multiple levels.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 985059
• Report Number(s): PNNL-SA-53496; KP1301020
• Journal Information: Inorganic Chemistry Communications, 10(6):646-648, Journal Name: Inorganic Chemistry Communications, 10(6):646-648 Journal Issue: 6 Vol. 10; ISSN 1387-7003
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
ANIONS
CAPACITY
CATIONS
HEAVY METALS
LINERS
SILICA
TRANSITION ELEMENTS
anion
anion binding
mechanism
mesoporous
metal complex
nanoporous