期刊
LANGMUIR
卷 27, 期 23, 页码 14425-14431出版社
AMER CHEMICAL SOC
DOI: 10.1021/la2033862
关键词
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资金
- NIH [R01CA142746]
- HFSP [RGP0056/2008]
- NSF-MRSEC
- Brandeis University
- Chinese Scholarship Council [2008638092]
Learning from the stabilization of protein structures, we combine aromatic-aromatic and electrostatic interactions to tailor the elasticity of supramolecular hydrogels. Specifically, calcium ions allow interfiber cross-links among the supramolecular nanofibers of small peptides that consist of multiple carboxylic acid and aromatic groups. A small change in the concentration of calcium increases the elasticity of hydrogels over several orders of magnitude. This simple approach not only demonstrates a biomimetic design of materials but also confirms that the combination of multiple aromatic-aromatic interactions and multiple calcium salt bridges is a feasible way to control the mechanical properties of soft nanomaterials.
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