Phosphate and phosphonate receptors in silicate materials
- Sandia National Labs., Albuquerque, NM (United States)
- Univ. of California, Irvine, CA (United States)
Molecular imprinted silicate materials for phosphates and phosphonates have been prepared via the sol-gel method. Guanidine functionality, with its unique combination of electrostatic and hydrogen bonding ability, were used as selective binding points in imprinted receptor cavities. We prepared the monomer 1-trimethoxysilylpropyl-3-guanidinium chloride and incorporated it into TEOS xerogels with a phosphonate template molecule. Spectroscopic analyses, including solid state {sup 29}Si NMR, found that the guanidine monomer was quantitatively incorporated into the gel. Binding affinities of various phosphate and phosphonate substrates were determined for templated and non-templated materials using HPLC analysis and a modified Bartlett assay. Molecular memory was observed and these results of imprinted xerogels functionalized with amine and trimethylammonium groups.
- Research Organization:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 560133
- Report Number(s):
- CONF-970443-; TRN: 97:005895-0160
- Resource Relation:
- Conference: 213. national meeting of the American Chemical Society, San Francisco, CA (United States), 13-17 Apr 1997; Other Information: PBD: 1997; Related Information: Is Part Of 213th ACS national meeting; PB: 2904 p.
- Country of Publication:
- United States
- Language:
- English
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