期刊
MACROMOLECULAR RAPID COMMUNICATIONS
卷 30, 期 3, 页码 170-175出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200800616
关键词
amino acids; chemosensor; fluorescent reporter; metal complex; polyacetylene
资金
- National Science Foundation of China [20674059]
- National Fundamental Key Research Program
- Hubei Province
New imidazole-functionalized disubstituted polyacetylene was synthesized by utilizing the postfunctional strategy. In addition, its ability to sense copper ions and alpha-amino acids by fluorescence quenching has been studied. The quenching of the fluorescence of the imidazole-functionalized disubstituted polyacetylene was observed at a very low level of Cu2+ (7.0 x 10(-7) mol . L-1). The fluorescent intensity decreased rapidly upon the increase of the concentration of the added solution of Cu2+. It was expected that the addition of alpha-amino acids to the solution of the polyacetylene/Cu2+ complex could turn on the fluorescence of the polyacetylene, if a-amino acids could remove the copper ions from the complex. Glycine, was used for testing: upon the addition of glycine the quenched fluorescence of P1 turned on immediately. The detection limit was as low as 6.0 x 10(-5) mol . L-1.
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