Controlled biosilification using self-assembled short peptides A6K and V6K

被引:14
作者
Wang, Qinrong [1 ]
Yu, Jun [1 ]
Zhang, Xin [1 ]
Liu, Daojun [2 ]
Zheng, Jinhong [2 ]
Pan, Ying [2 ]
Lin, Yuejuan [3 ]
机构
[1] Shantou Univ, Dept Chem, Fac Sci, Shantou 515063, Peoples R China
[2] Shantou Univ, Coll Med, Shantou 515041, Peoples R China
[3] Shantou Univ, Anal & Testing Ctr, Shantou 515063, Peoples R China
基金
中国国家自然科学基金;
关键词
SILICA NANOSTRUCTURES; AMPHIPHILE NANOFIBERS; BIOMIMETIC SYNTHESIS; NANOTUBES; FABRICATION; ADSORPTION; GROWTH; IONS;
D O I
10.1039/c2ra22099g
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
We report the molecular self-assembly of two amphiphilic peptides (A(6)K and V6K) and the application of their self-assemblies as organic templates to direct biosilica formation. Under ambient conditions, A(6)K self-assembled into nanotubes 2.7 nm tall and approximately 1 mu m to 2 mu m long. In contrast, V6K self-assembled into lamellar-stack nanostructures approximately 4 nm tall and under 100 nm long. The self-assembled peptide nanostructures were used as organic templates to direct biosilica formation. Comparing with the self-assembled structures formed by the peptide/anions system, novel silica morphologies can be obtained by changing the peptide composition, using different anions, and applying electrostatic/flow fields. We observed that the presence of anions is important but not enough to produce ordered silica structures with novel morphologies. This study provides further understanding of silica biomineralization tailored by assembled peptides, which offers a simple but efficient method to control the formation of inorganic material.
引用
收藏
页码:2784 / 2793
页数:10
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