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A Photoresponsive Red-Hair-Inspired Polydopamine-Based Copolymer for Hybrid Photocapacitive Sensors

Ambrico, Marianna ; Vecchia, Nicola Fyodor Della ; Ambrico, Paolo F. ; Cardone, Antonio ; Cicco, Stefania R. ; Ligonzo, Teresa ; Avolio, Roberto ; Napolitano, Alessandra ; d'Ischia, Marco

Advanced functional materials, 2014-12, Vol.24 (45), p.7161-7172 [Periódico revisado por pares]

Blackwell Publishing Ltd

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  • Título:
    A Photoresponsive Red-Hair-Inspired Polydopamine-Based Copolymer for Hybrid Photocapacitive Sensors
  • Autor: Ambrico, Marianna ; Vecchia, Nicola Fyodor Della ; Ambrico, Paolo F. ; Cardone, Antonio ; Cicco, Stefania R. ; Ligonzo, Teresa ; Avolio, Roberto ; Napolitano, Alessandra ; d'Ischia, Marco
  • Assuntos: bioinspired devices ; Biological materials ; Biopolymers ; Copolymers ; Devices ; Hair ; light sensing ; MIS photocapacitance ; PDA ; pheomelanins ; Pigments ; polydopamine ; Sensors
  • É parte de: Advanced functional materials, 2014-12, Vol.24 (45), p.7161-7172
  • Notas: ark:/67375/WNG-K33NVB35-T
    ArticleID:ADFM201401377
    istex:C76CFC384F6F83C0EA3C46E0DDFF810697BC2BA8
    Italian MIUR
    ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Inspired by the powerful photosensitizing properties of the red hair pigments pheomelanins, a photoresponsive cysteine‐containing variant of the adhesive biopolymer polydopamine (pDA) is developed via oxidative copolymerization of dopamine (DA) and 5‐S‐cysteinyldopamine (CDA) in variable ratios. Chemical and spectral analysis indicate the presence of benzothiazole/benzothiazine units akin to those of pheomelanins. p(DA/CDA) copolymers display ­impedance properties similar to those of biological materials and a marked photoimpedance response to light stimuli. The use of the p(DA/CDA) copolymer to implement a solution‐processed hybrid photocapacitive/resistive metal‐insulator‐semiconductor (MIS) device disclosed herein is the first example of technological exploitation of photoactive, red‐hair‐inspired biomaterials as soft enhancement layer for silicon in an optoelectronic device. The bio‐inspired materials described herein may provide the active component of new hybrid photocapacitive sensors with a chemically tunable response to visible light. Incorporation of cysteinyldopamine(CDA)‐derived units into polydopamine (pDA) leads to an innovative bioinspired material combining the photosensitizing properties of red human hair pigments with the electrical properties of melanins. The resulting mixed‐type biopolymers exhibit a markedly enhanced response to UV light and open the doorway to unprecedented bio‐inspired metal‐insulator‐semiconductor photo‐capacitor hybrid devices with tunable optical response for light sensing applications.
  • Editor: Blackwell Publishing Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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