التفاصيل البيبلوغرافية
| العنوان: |
Silver Films with Hierarchical Chirality. |
| المؤلفون: |
Ma, Liguo1, Cao, Yuanyuan1, Duan, Yingying1,2, Han, Lu1,2, Che, Shunai1,2 |
| المصدر: |
Angewandte Chemie International Edition. 7/17/2017, Vol. 56 Issue 30, p8657-8662. 6p. |
| مصطلحات موضوعية: |
*METAL coating, *SILVER, *CHIRALITY, *CRYSTAL lattices, *OXIDATION-reduction reaction, *AMINO acids |
| مستخلص: |
Physical fabrication of chiral metallic films usually results in singular or large-sized chirality, restricting the optical asymmetric responses to long electromagnetic wavelengths. The chiral molecule-induced formation of silver films prepared chemically on a copper substrate through a redox reaction is presented. Three levels of chirality were identified: primary twisted nanoflakes with atomic crystal lattices, secondary helical stacking of these nanoflakes to form nanoplates, and tertiary micrometer-sized circinates consisting of chiral arranged nanoplates. The chiral Ag films exhibited multiple plasmonic absorption- and scattering-based optical activities at UV/Vis wavelengths based on their hierarchical chirality. The Ag films showed chiral selectivity for amino acids in catalytic electrochemical reactions, which originated from their primary atomic crystal lattices. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
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