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Polymers 2017, 9(4), 135; doi:10.3390/polym9040135

A Facile Approach for Fabrication of Core-Shell Magnetic Molecularly Imprinted Nanospheres towards Hypericin

Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, Yangling 712100, China
Author to whom correspondence should be addressed.
Academic Editor: Po-Chih Yang
Received: 2 March 2017 / Revised: 31 March 2017 / Accepted: 3 April 2017 / Published: 7 April 2017
(This article belongs to the Special Issue Polymers for Chemosensing)
View Full-Text   |   Download PDF [6113 KB, uploaded 7 April 2017]   |  


By taking advantage of the self-polymerization of dopamine on the surface of magnetic nanospheres in weak alkaline Tris-HCl buffer solution, a facile approach was established to fabricate core-shell magnetic molecularly imprinted nanospheres towards hypericin (Fe3O4@PDA/Hyp NSs), via a surface molecular imprinting technique. The Fe3O4@PDA/Hyp NSs were characterized by FTIR, TEM, DLS, and BET methods, respectively. The reaction conditions for adsorption capacity and selectivity towards hypericin were optimized, and the Fe3O4@PDA/Hyp NSs synthesized under the optimized conditions showed a high adsorption capacity (Q = 18.28 mg/g) towards hypericin. The selectivity factors of Fe3O4@PDA/Hyp NSs were about 1.92 and 3.55 towards protohypericin and emodin, respectively. In addition, the approach established in this work showed good reproducibility for fabrication of Fe3O4@PDA/Hyp. View Full-Text
Keywords: surface molecular imprinting; hypericin; magnetic nanospheres; dopamine; core-shell surface molecular imprinting; hypericin; magnetic nanospheres; dopamine; core-shell

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Cheng, W.; Fan, F.; Zhang, Y.; Pei, Z.; Wang, W.; Pei, Y. A Facile Approach for Fabrication of Core-Shell Magnetic Molecularly Imprinted Nanospheres towards Hypericin. Polymers 2017, 9, 135.

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