期刊
POLYMER
卷 53, 期 2, 页码 490-494出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2011.11.058
关键词
Conjugated polymer; Fluorescent probe; Aggregation-induced emission
资金
- National Natural Science Foundation of China [20904055, 21074130]
- Science Fund for Creative Research Groups [20921061]
- 973 Project [2009CB623601]
A novel conjugated cationic polyfluorene containing aminated tetraphenylethene (ATPE) unit is developed as a sensitive and selective fluorescence probe for heparin detection based on the combination of aggregation-induced emissive property of the ATPE units and the FRET process from the blue-emissive polyfluorene segments to the yellow-emissive AWE units. The addition of anionic heparin will lead to the formation of heparin/polymer complexes, and turn on the aggregation-induced yellow emission of the ATPE units. A good linear relationship is found between the yellow emission intensity of the AWE units and the heparin concentrations with a limit of detection of 30 nM in aqueous buffer. (C) 2011 Elsevier Ltd. All rights reserved.
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