کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5211387 | 1382947 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optically active polymethacrylamides bearing a bulky oxazoline pendant: Synthesis and characterization
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A novel type of chiral methacrylamide derivatives, N-[o-(4-phenyl-4,5-dihydro-1,3-oxazol-2-yl)phenyl]methacrylamide ((R)-PhOPMAM), N-[o-(4-isopropyl-4,5-dihydro-1,3-oxazol-2-yl)phenyl]methacrylamide ((S)-PriOPMAM), and N-[o-(4-isopropyl-4,5-dihydro-1,3-oxazol-2-yl)phenyl]methacrylamide ((S)-MeOPMAM), was synthesized and radically polymerized to the corresponding polymers in moderate yields. The polymerization characteristics and the chiroptical behavior of the resultant polymers have been examined in detail by using circular dichroism (CD), UV-Vis, and NMR spectroscopies in comparison with our previous observation. It was found that the oxazoline moieties have an effective influence on both the polymerization process and the optical activity of obtained polymers. Especially, the levorotatory monomer (S)-MeOPMAM ([α]D25=-7.7°) was transformed to the polymers with dextrorotation activity ([α]D25=+102.0°to+117.1°), indicating the polymer main chain might exist a helical conformation. Also, the chiral recognition ability was briefly evaluated by 1H NMR technique for the poly(OPMAM)s.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 67, Issue 7, July 2007, Pages 636-643
Journal: Reactive and Functional Polymers - Volume 67, Issue 7, July 2007, Pages 636-643
نویسندگان
Zheng Fu, Xiujuan Xi, Liming Jiang, Zhiquan Shen,