Synthesis of antireflective silica coatings through the synergy of polypeptide layer-by-layer assemblies and biomineralization

Yung Lun Lee, Ting Xuan Lin, Feng Ming Hsu, Jeng Shiung Jan

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

We report a versatile approach to synthesize silica coatings with antireflective (AR) characteristics through the combination of a layer-by-layer (LbL) assembly technique and biomineralization. LbL assembled decanoyl-modified poly(l-lysine)/poly(l-glutamic acid) (PLL-g-Dec/PLGA) multilayer films were used as templates for silica mineralization, followed by calcination. The specific deposition of silica onto the LbL polypeptide assemblies through amine-catalyzed polycondensation resulted in silica coatings that exhibited the transcription of the nano-/microstructured polypeptide films and their film thickness and porosity can be tuned by varying the number of bilayers, degree of substitution, and PLL molecular weight. AR silica coatings exhibiting more than 6% increase in transmittance in the near UV/visible spectral range can be obtained at an optimized refractive index, thickness, and surface roughness. The abrasion test showed that the silica coatings exhibited sufficient structural durability due to continuous silica nanostructures and low surface roughness. This study demonstrated that nanostructured thin films can be synthesized for AR coatings using the synergy between the LbL assembly technique and biomineralization.

Original languageEnglish
Pages (from-to)2367-2377
Number of pages11
JournalNanoscale
Volume8
Issue number4
DOIs
Publication statusPublished - 2016 Jan 28

All Science Journal Classification (ASJC) codes

  • General Materials Science

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