| 固定化无机结合肽AG4(NPSSLFRYLPSD)仿生制备银微晶体 |
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| 引用本文： | 张旭,陈劲春,杨鹏,杨万泰.固定化无机结合肽AG4(NPSSLFRYLPSD)仿生制备银微晶体[J].高等学校化学学报,2006,27(1):5-8. |
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| 作者姓名： | 张旭 陈劲春 杨鹏 杨万泰 |
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| 作者单位： | 1. 北京化工大学生命科技学院; 2. 北京化工大学材料科学与工程学院, 北京 100029 |
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| 摘 要： | 摘要利用固定化的AG4进行了离体仿生制备银微晶的研究. 受静电力推动, 正离子化的PET-N(CH3)2膜表面吸附了AG4, AG4/ PET-N+(CH3)2膜经AgNO3溶液浸泡后, 用SEM观测发现了大小为1~2 μm的银微晶体, 其多数呈三角形和正方形. 经XPS检测, 银微晶体的Ag3d结合能为368.1 eV(Ag0的Ag3d结合能标准值为368.2 eV), 同时还测得硝酸银的Ag3d结合能为368.6 eV. 由此推断， 固定化后的AG4在离体条件下能将AgNO3溶液中的Ag+还原为Ag0. 对Ag+在AG4/ PET-N(CH3)2膜上还原并形成微晶体的机理进行了初步分析和探讨.
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| 关 键 词： | 无机结合肽 PET膜 银微晶 分子仿生 |
| 文章编号： | 0251-0790（2006）01-0005-04 |
| 收稿时间： | 01 18 2005 12:00AM |
| 修稿时间： | 2005年1月18日 |
Silver Biomimetic Mineralization in vitro with Inorganic-binding Peptide AG4(NPSSLFRYLPSD) Immobilized on PET Film |
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| ZHANG Xu,CHEN Jin-Chun,YANG Peng,YANG Wan-Tai.Silver Biomimetic Mineralization in vitro with Inorganic-binding Peptide AG4(NPSSLFRYLPSD) Immobilized on PET Film[J].Chemical Research In Chinese Universities,2006,27(1):5-8. |
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| Authors: | ZHANG Xu CHEN Jin-Chun YANG Peng YANG Wan-Tai |
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| Institution: | 1. College of Life Science and Technology, 2. College of Material Science and Engineering,;
Beijing University of Chemical Technology, Beijing 100029, China) |
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| Abstract: | AbstractAG4(NPSSLFRYLPSD)is a peptide that specifically and selectively binds to silver resulting from Dr. Stony′s phage display peptide combination library. The peptides that have similar characteristic are defined as inorganic binding peptides. In our experiment, AG4 was adsorbed on the surface of protonated PET-N(CH3)2 film for studying its biomineralization behavior in vitro. Based on the XPS results of both silver crystallite on AG4/PET-N+(CH3)2 film and AgNO3 salt, we approved that Ag+ exactly reduced to Ag0 and further formed silver crystallites. In addition, the images of SEM revealed that silver crystallite was 1-2 μm in size with a square shape and a triangular shape. At last, we discussed the reaction mechanism possibly occurring in this process. |
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| Keywords: | Inorganic-binding peptides PET film Silver Micro-crystallite Molecular biomimetics |
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