کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10126748 | 1644979 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Polymerization of dopamine catalyzed by laccase: Comparison of enzymatic and conventional methods
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Polymerization of dopamine catalyzed by laccase: Comparison of enzymatic and conventional methods Polymerization of dopamine catalyzed by laccase: Comparison of enzymatic and conventional methods](/preview/png/10126748.png)
چکیده انگلیسی
Polydopamine (PDA) films are generally produced by spontaneous oxidation of dopamine in basic medium, which is a highly convenient method for surface modification. This method is, however, not suitable for alkaline sensitive materials, which have poor stability in alkali medium and need over-long reaction time. Herein, we compared two dopamine polymerization methods: conventional method (induced by O2 at pH 8.5) and laccase-catalyzed method (at pH 5.5). The comparison showed that the polymerization of dopamine was greatly improved when catalyzed by laccase. The PDA film obtained from laccase-catalyzed method was more uniform and more stable compared with that obtained from the conventional method; the film was able to further react with amine-terminated molecules. As a result of laccase, ether bonds were found between dopamine units of PDA; while such bonds were not observed in film obtained from the conventional method. This work can be a basis for a better understanding of structure and property relationships of PDA coating.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Enzyme and Microbial Technology - Volume 119, December 2018, Pages 58-64
Journal: Enzyme and Microbial Technology - Volume 119, December 2018, Pages 58-64
نویسندگان
Fan Li, Yuanyuan Yu, Qiang Wang, Jiugang Yuan, Ping Wang, Xuerong Fan,