| Autor: |
Yan Hui Wang, Fei Tong, Jun Qing Li, Xian De Shen, Zhen Xing Wang, Hong Xing Dong |
| Rok vydání: |
2010 |
| Předmět: |
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| Zdroj: |
Advanced Materials Research. :150-159 |
| ISSN: |
1662-8985 |
| DOI: |
10.4028/www.scientific.net/amr.150-151.150 |
| Popis: |
Polymers imprinted with (S)-(-)-1,1’-bi (2-naphthol) and (R)-(+)-1,1’-bi (2-naphthol) have been prepared by non-covalent imprinting. A combinational procedure was used to optimize the functional monomer and crosslinker. A copolymer of 2-vinylpyridine and divinylbenzene resulted in the best chiral recognition. The ratio of template to functional monomer and solvent in the pre-polymerization mixture were also optimized. The imprinted polymers were used as stationary phases in high-performance liquid chromatography (HPLC). The molecularly imprinted polymers (MIPs) were more selective when prepared using a less polar solvent. Effective separations of the enantiomers of racemic (±)-1, 1’-Bi (2-naphthol) were achieved by use of acetonitrile as mobile phase; no cross-selectivity was observed. Interactions between functional monomers and template were investigated by 1H NMR spectroscopy. The results suggest that hydrogen-bonding between the functional monomer and the template and π-π stacking interaction between the cross-linker and the template may contribute to chiral recognition. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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