Preparation and Chiral Recognition of Thermosensitive Poly(N-isopropylacrylamide) Microgels Containing Modified L-Phenylalanine Groups |
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Authors: | CHEN Jiaojiao YIN Yue FU Hongjun LI Qifeng ZOU Jiwei |
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Affiliation: | 1. State Key Laboratory of Separation Membranes and Membrane Process, School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, P. R. China; 2. Tianjin Key Laboratory of Fiber Modification and Functional Fiber and Textile Division, Tianjin Polytechnic University, Tianjin 300387, P. R. China |
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Abstract: | Thermosensitive poly[N-isopropylacrylamide(NIPAM)-co-N-acryloyl-L-phenylalanine ethyl ester (NALPE)] microgels were prepared by the free radical polymerization of NIPAM and chiral monomer, NALPE. Such microgels exhibited spherical shape and favorable monodispersity. Increasing the content of NALPE units would enhance the average diameter, but decrease the thermosensitivity and volume-phase transition temperatures of the microgels. Compared with PNIPAM microgels, the microgels containing NALPE units performed chiral recognozable capacities for D-phenylalanine and D-tartaric acid, and the enantioselectivity and adsorption capacity of the microgels improved with increasing the temperature and/or the content of NALPE units. |
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Keywords: | Thermosensitive microgel N-Isopropylacrylamide L-Phenylalanine Chiral recognition |
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