Peptide-Directed Hierarchical Mineralized Silver Nanocages for Anti-Tumor Photothermal Therapy
| Autor: | Dawei Gao, Tian Yin, Huan Liu, Kai Liu, Xuwu Zhang, Kang Niu, Weiwei Cao, Kexin Bian |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment General Chemical Engineering Energy conversion efficiency Nanotechnology 02 engineering and technology General Chemistry Photothermal therapy 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Silver nitrate chemistry.chemical_compound Nanocages chemistry Environmental Chemistry Surface plasmon resonance 0210 nano-technology Absorption (electromagnetic radiation) Plasmon Biomineralization |
| Zdroj: | ACS Sustainable Chemistry & Engineering. 6:7574-7588 |
| ISSN: | 2168-0485 |
| Popis: | The size and morphology of metals determine their plasmon resonances. How to elegantly tune their architectures to obtain optical properties as required (e.g., strong absorption in the near-infrared (NIR) wavelengths) is a bottleneck for phototherapy. Inspired by biomineralization, we develop a simple but robust strategy to fabricate silver nanocages (Ag NCs) based on peptide-directed mineralization of silver. The Ag NCs are organic–inorganic hybrids with octreotide (OCT) templated decoration of Ag shells that are composed of Ag NPs. This hierarchical organization makes Ag NPs get together in close proximity, which facilitates ultrastrong plasmonic coupling to shift the resonant excitation from the visible (420 nm) to the NIR region (810 nm). In addition, the surface plasmon resonance peak of the Ag NCs in the NIR region can be subtly tuned by varying the volume of added silver nitrate (AgNO3) to control the size and morphology of mineralized Ag NCs. The Ag NCs have a light-to-heat conversion efficiency o... |
| Databáze: | OpenAIRE |
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