Optical Instruments, Volume. 47, Issue 3, 87(2025)

Surface-enhanced Raman scattering detection of amino acids based on Au@Ag nanoparticles

Min CHANG, Huifang LIU, Yueyan SHI, Jiachang ZHANG, Shibo LI, and Chen HE
Author Affiliations
  • School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
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    Figures & Tables(6)
    Preparation process of Au@Ag NPs
    Absorption spectra and particle size distribution of Au NPs and Au@Ag NPs
    Characterizations of Au NPs and Au@Ag NPs
    Raman spectra of different amino acids detected on Au@Ag NPs substrate
    SERS spectra of amino acids at various concentrations and the linear relationship between concentration and signal intensity
    • Table 1. Raman characteristic peak positions and their assignments of different amino acids

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      Table 1. Raman characteristic peak positions and their assignments of different amino acids

      氨基酸参考文献中的SERS峰位/cm−1本研究的SERS峰位/cm−1归 属
      注:$ {v} $. 伸缩振动;$ {\rho } $. 面内摇摆振动;$ {\omega } $. 面外摇摆振动;$ {\delta } $. 剪式运动;$ {\gamma } $. 面外弯曲振动;s. 对称;$ \mathrm{a}\mathrm{s} $. 非对称;ring.苯环; imi. 咪唑环。
      苯丙氨酸10031001$ {v}_{\mathrm{s}} $(C-C)ring
      12121203苯环呼吸
      16141602$ {v} $(C-C)ring
      丙氨酸850841$ {v}_{\mathrm{s}} $(C-C)
      919934$ {v}_{\mathrm{s}} $(C-C)
      10191023$ {\rho} $(CH3)
      11121092$ {v}_{\mathrm{s}} $(CH3)
      14081397$ {{v}}_{\mathrm{s}} $(-COO-)
      酪氨酸11601159$ {v} $(C-C) ring
      13361245${v} $(C-N) ring
      14641481$ {v} $(C-C),$ {v} $(NH3)
      15701585$ {v} $(C=O)
      组氨酸672652${\omega } $(imi),$ {\omega } $(-COO-)imi
      9971005$ \mathrm{v} $(C=C)
      12381272$ {\omega } $(C-H),$ {\omega } $(N-H)
      15141492$ {{v}}_{\mathrm{s}} $(C=C)imi,$ {{v}}_{\mathrm{s}} $(C=N)imi
      15491574$ {v} $(C-C)
      精氨酸921929$ {\gamma } $(C-C-C),$ {v} $(C-N)
      10661078$ {v} $(C-C),$ {v} $(C-N)
      16691638$ {\delta } $(N-H),$ {v} $(C=N)
      异亮氨酸10161014${v} $(C-C),$ {v} $(C-COO−)
      14681453$ {\gamma } $as(CH3),$ {\omega } $(CH2)
      甘氨酸849901$ {v} $(C-C), $ {\rho } $(NH3)
      10791023$ {v} $(C-N)
      14301385$ {\rho } $(CH2),$ {v} $(C-C),$ {v} $(-COO−)
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    Min CHANG, Huifang LIU, Yueyan SHI, Jiachang ZHANG, Shibo LI, Chen HE. Surface-enhanced Raman scattering detection of amino acids based on Au@Ag nanoparticles[J]. Optical Instruments, 2025, 47(3): 87

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    Paper Information

    Received: Mar. 1, 2024

    Accepted: --

    Published Online: Jul. 28, 2025

    The Author Email:

    DOI:10.3969/j.issn.1005-5630.202403010029

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