ICCAS OpenIR
Poly(L-lysine)-Mediated Biomimetic Silica Synthesis: Effects of Mixing Sequences and Counterion Concentrations
Xia, Lin; Li, Zhibo
2011-02-01
Source PublicationLANGMUIR
ISSN0743-7463
Volume27Issue:3Pages:1116-1122
AbstractTwo poly(L-lysine center dot HBr) (PLL) homopolypeptides along with phosphate buffer were used as organic templates to direct biomimetic silica synthesis under ambient conditions. We found that mixing sequence of reaction species played a key role in terms of controlling resulting silica morphologies. Premixing PLL solution with phosphate buffer followed with addition of silicic acid produced regular hexagonal silica plates, while premixing silicic acid with either PLL or phosphate solution prior to adding phosphate buffer or PLL solution only produced irregular silica nanoparticles. In addition, we found that the concentration of phosphate ions was also an important factor to control silica structures. When the ratio of phosphate/lysine residue (delta) was smaller than one, PLL only produced irregular silica particles. When delta was larger than 2.5, PLL produced regular silica plates. We performed CD measurements to track the conformation transition of PLL during biomineralization process and found that the resulting silica structures were closely related to the secondary structure of PLL regardless of experimental conditions. Only when PLL underwent an in situ coil-helix transition could ordered silica structures be produced.
DOI10.1021/la104030f
Indexed BySCI
Language英语
WOS IDWOS:000286485600037
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:29[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/73052
Collection中国科学院化学研究所
Corresponding AuthorLi, Zhibo
AffiliationChinese Acad Sci, Inst Chem, BNLMS, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Xia, Lin,Li, Zhibo. Poly(L-lysine)-Mediated Biomimetic Silica Synthesis: Effects of Mixing Sequences and Counterion Concentrations[J]. LANGMUIR,2011,27(3):1116-1122.
APA Xia, Lin,&Li, Zhibo.(2011).Poly(L-lysine)-Mediated Biomimetic Silica Synthesis: Effects of Mixing Sequences and Counterion Concentrations.LANGMUIR,27(3),1116-1122.
MLA Xia, Lin,et al."Poly(L-lysine)-Mediated Biomimetic Silica Synthesis: Effects of Mixing Sequences and Counterion Concentrations".LANGMUIR 27.3(2011):1116-1122.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Xia, Lin]'s Articles
[Li, Zhibo]'s Articles
Baidu academic
Similar articles in Baidu academic
[Xia, Lin]'s Articles
[Li, Zhibo]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Xia, Lin]'s Articles
[Li, Zhibo]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.