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<p>ZnS based nanophosphors have attracted research interest because of their novel properties and extensive range of applications. Green synthesized ZnS nanophosphors are more ecofriendly and ideal for biomedical applications. This work focuses on the synthesis of plant protein capped, stable manganese doped ZnS nanoparticles using the wet chemical precipitation approach. Plant protein derived from <i>Wedelia trilobata</i>, a weed plant, is used for surface functionalization of our material. XRD analysis verified the formation of the cubic phase of the sample. FTIR analysis validated protein capping in the sample. The bandgap value was found to be 3.47&#xa0;eV. Upon excitation at 325&#xa0;nm, the protein capped ZnS: Mn sample exhibited intense orange photoluminescence. The sample was effective towards both gram-negative and positive bacteria. Thus, the results from this work show that the nanophosphor samples are suitable for both luminescence and biomedical applications.</p>

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Sustainable protein assisted synthesis of luminescent Mn activated ZnS nanocrystals for biomedical applications

  • 期刊论文

  • 发表日期：

    2026年6月18日

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  • Sony Jose,
  • E I Anila,
  • Soorya G Nath,
  • Mariat George

摘要

ZnS based nanophosphors have attracted research interest because of their novel properties and extensive range of applications. Green synthesized ZnS nanophosphors are more ecofriendly and ideal for biomedical applications. This work focuses on the synthesis of plant protein capped, stable manganese doped ZnS nanoparticles using the wet chemical precipitation approach. Plant protein derived from Wedelia trilobata, a weed plant, is used for surface functionalization of our material. XRD analysis verified the formation of the cubic phase of the sample. FTIR analysis validated protein capping in the sample. The bandgap value was found to be 3.47 eV. Upon excitation at 325 nm, the protein capped ZnS: Mn sample exhibited intense orange photoluminescence. The sample was effective towards both gram-negative and positive bacteria. Thus, the results from this work show that the nanophosphor samples are suitable for both luminescence and biomedical applications.