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      Production of natural chitin film from pupal shell of moth: Fabrication of plasmonic surfaces for SERS-based sensing applications

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      Embargo Lift Date: 2022-06-15
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      Author(s)
      Chen, Y- M.
      Bilican, B. K.
      Çakmak, B.
      Ali, A.
      Zang, L- S.
      Kaya, M.
      Bilican, İsmail
      Önses, Mustafa Serdar
      Date
      2021-06-15
      Source Title
      Carbohydrate Polymers
      Print ISSN
      0144-8617
      Electronic ISSN
      1879-1344
      Publisher
      Elsevier Ltd
      Volume
      262
      Pages
      117909-1 - 117909-9
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      Commercially available types of chitin or chitin isolate are usually in powder form and are nanofibrous in microstructure. However, the surface characteristics of natural chitin in the body of insects are currently understudied. Herein, natural chitin film was successfully produced from bio-waste of insect pupae of the Japanese giant silkworm. Two different surface morphologies of the chitin film were observed. We report for the first time a micropapillary surface structure of chitin which was observed on the dorsal side of the film. To further potential of the micropapillary structured natural chitin in sensing applications, we develop a protocol for generating a nanoscopic film of Ag using thermal evaporation. The Ag-deposited natural chitin films exhibited surface-enhanced Raman scattering (SERS) activity to an extent depending on the structure of the film. In conclusion, materials science has been expanded by addition of a natural, three-dimensional chitin film with utilizable properties.
      Keywords
      Caligula japonica
      Pupa shell
      Chitin isolation
      Novel surface morphology
      SERS
      Permalink
      http://hdl.handle.net/11693/76818
      Published Version (Please cite this version)
      https://doi.org/10.1016/j.carbpol.2021.117909
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      • Institute of Materials Science and Nanotechnology (UNAM) 2098
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