کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5210223 | 1382881 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and in situ core reorganization of smart polymers
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Synthesis and in situ core reorganization of smart polymers Synthesis and in situ core reorganization of smart polymers](/preview/png/5210223.png)
چکیده انگلیسی
A smart poly(ethylene oxide) polymer containing two thermally reversible groups located at the chain center (F2-PEO) was synthesized by a maleimide-furan (MF) [4Â +Â 2] Diels-Alder (DA) reaction between one bis[(furan-2-yl)methyl] terephthalate (F2) and two maleimide-terminated poly(ethylene glycol) methyl ethers (MI-PEOs). MF adducts underwent retro-DA (rDA) addition at a higher temperature, and the maleimide-anthracene (MA) addition reaction could occur simultaneously. Therefore, when F2-PEO and bis((anthracen-10-yl)methyl) succinate (AN2) were refluxed in toluene for 48Â h, the cores of F2-PEOs were replaced with the MA adducts in situ to give new polymers AN2-PEOs. Moreover, when F2-PEOs were mixed with the molecules containing four anthracene units (AN4), the rDA reaction of the MF adducts and the MA addition reactions occurred simultaneously, generating four-arm star PEOs. The core reorganization of polymers has been confirmed by SEC, UV, 1H NMR, and MALDI-TOF mass spectra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 71, Issue 8, August 2011, Pages 843-848
Journal: Reactive and Functional Polymers - Volume 71, Issue 8, August 2011, Pages 843-848
نویسندگان
Xiubo Jiang, Wen Zhu, Yechao Yan, Yongming Chen, Fu Xi,