Molecularly Imprinted Sol−Gel Nanotubes Membrane for Biochemical Separations
- 11 March 2004
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 126 (13), 4054-4055
- https://doi.org/10.1021/ja0389570
Abstract
In this study, we report a simple procedure for applying molecular imprinting functional groups to the inner surfaces of the template-synthesized sol−gel nanotubes for chemical separation of estrone. The silica nanotubes were synthesized within the pores of nanopore alumina template membranes using a sol−gel method by simultaneous hydrolysis of a silica monomer−imprinted molecule complex and tetraethoxysilane (TEOS). A covalent imprinting strategy was employed by generating a sacrificial spacer through the reaction of the isocyanate group of 3-(triethoxysilyl)propyl isocyanate and a phenol moiety of estrone to form a thermally cleavable urethane bond. This allowed us to remove the imprinted estrone by simple thermal reaction and to simultaneously introduce functional groups into the cavity formed by the silica nanotubes. Experiments indicated that estrone could be bound selectively by such an approach and have a binding affinity of 864 ± 137 (n = 3).This publication has 27 references indexed in Scilit:
- Templated Surface Sol–Gel Synthesis of SiO2 Nanotubes and SiO2‐Insulated Metal NanowiresAdvanced Materials, 2003
- Molecularly imprinted polymer for metsulfuron-methyl and its binding characteristics for sulfonylurea herbicidesAnalytica Chimica Acta, 2002
- Antibody-Based Bio-Nanotube Membranes for Enantiomeric Drug SeparationsScience, 2002
- Peer Reviewed: MIPs as Chromatographic Stationary Phases for Molecular Recognition.Analytical Chemistry, 1999
- Tailor-made materials for tailor-made applications: application of molecular imprints in chemical analysisTrAC Trends in Analytical Chemistry, 1999
- Nanotubule-Based Molecular-Filtration MembranesScience, 1997
- Molecular Imprinting in Cross‐Linked Materials with the Aid of Molecular Templates— A Way towards Artificial AntibodiesAngewandte Chemie-International Edition, 1995
- Nanomaterials: A Membrane-Based Synthetic ApproachScience, 1994
- Selective reduction of steroid 3- and 17-ketones using lithium aluminum hydride activated template polymersJournal of the American Chemical Society, 1993
- An analysis of small-molecule binding to functionalized synthetic polymers by 13C CP/MAS NMR and FT-IR spectroscopyJournal of the American Chemical Society, 1991