Polydopamine/Silver Substrates Stemmed from Chiral Silica for SERS Differentiation of Amino Acid Enantiomers
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- Huanjun Kong
- The Education Ministry Key Lab of Resource Chemistry, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
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- Xueping Sun
- The Education Ministry Key Lab of Resource Chemistry, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
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- Liu Yang
- The Education Ministry Key Lab of Resource Chemistry, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
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- Xinling Liu
- The Education Ministry Key Lab of Resource Chemistry, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
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- Haifeng Yang
- The Education Ministry Key Lab of Resource Chemistry, College of Chemistry and Materials Science, Shanghai Normal University, Shanghai 200234, China
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- Ren-Hua Jin
- Department of Material and Life Chemistry, Kanagawa University, Yokohama 221-8686, Japan
書誌事項
- 公開日
- 2020-06-22
- 資源種別
- journal article
- 権利情報
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- https://doi.org/10.15223/policy-029
- https://doi.org/10.15223/policy-037
- https://doi.org/10.15223/policy-045
- DOI
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- 10.1021/acsami.0c08780
- 公開者
- American Chemical Society (ACS)
この論文をさがす
説明
Polydopamine (PDA) and silver (Ag) nanoparticles were first generated on chiral silica nanofibers and then detached from silica to form PDA/Ag composites. The as-obtained PDA/Ag showed surface-enhanced Raman scattering (SERS) activity but very weak circular dichroism optical activity. Interestingly, the PDA/Ag substrates could make a pair of tyrosine (or phenylalanine) enantiomers show different Raman scattering signal intensities, where the differences could reach 3 times. In contrast, PDA/Ag prepared by using racemic or achiral silica did not exhibit such discrimination performance. Therefore, this research offered a novel SERS-based enantiomeric differentiation method with the assistance of plasmonic metal-containing substrates stemmed from intrinsically chiral inorganic silica.
収録刊行物
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- ACS Applied Materials & Interfaces
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ACS Applied Materials & Interfaces 2020-06-22
American Chemical Society (ACS)
