Continuous Silica Coatings on Glass Fibers via Bioinspired Approaches

Pogula, Suvarchala Devi; Patwardhan, Siddharth V.; Perry, Carole C.; Gillespie, John W.; Yarlagadda, Shridhar; Kiick, Kristi L.

doi:10.1021/la063685a

Cited by 32 publications

(22 citation statements)

References 65 publications

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“…[53] In addition to surfacem odifications, tailoredp olyamines have been explored as surrogates for the silaffin proteins. [54][55][56][57][58][59] As an example, poly-l-lysine (PLL) has been shown to condense silica from solutions of silicic acid. Low-molecular-weight PLL had the capacity to form spherical nanoparticles, whereas high-molecular-weight PLL resulted in the formation of hexagonal silica forms.…”

Section: Diatomsmentioning

confidence: 99%

Biocatalysis in Silicon Chemistry

Frampton

Zelisko

2017

Chemistry An Asian Journal

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The application of biocatalytic or chemoenzymatic techniquesi ns ilicon chemistry serves two roles:i tp rovides ag reater understanding of the processing of silicon species by natural systems, such as plants, diatoms, and sponges, as well openingu pa venues to green methodologies in the field. In the latter case, biocatalytic approaches have been applied to the synthesis of small-molecule systems and polymeric materials. Often these biocatalytic approaches allow access to molecular structures under mild conditions and, in some cases, molecular structures that are not accessible throught raditional chemical methodologies. Ar eview of recent advances in the applications of biocatalysis in silicon chemistry is presented.

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Section: Diatomsmentioning

confidence: 99%

Biocatalysis in Silicon Chemistry

Frampton

Zelisko

2017

Chemistry An Asian Journal

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“…With, again, nature as inspiration, metal oxide thin films on solid supports could be prepared by immobilizing silicatein‐α and making use of its catalytic properties. Moreover, the creation of silica patterned thin films by the use of immobilized polypeptides and polyamines that act as templates has been reported with several methods, such as electrostatic deposition [65,66], direct write assembly [67], holographic patterning [68], photolithography [67], and surface‐initiated polymerization [69]. However, this approach is beyond the scope of this review.…”

Section: Deposition Of Thin Films With Surface‐bound Recombinant Silimentioning

confidence: 99%

Bioinspired synthesis of multifunctional inorganic and bio‐organic hybrid materials

et al. 2012

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Owing to their physical and chemical properties, inorganic functional materials have tremendous impacts on key technologies such as energy generation and storage, information, medicine, and automotive engineering. Nature, on the other hand, provides evolution-optimized processes, which lead to multifunctional inorganic-bio-organic materials with complex structures. Their formation occurs under physiological conditions, and is goverened by a combination of highly regulated biological processes and intrinsic chemical properties. Nevertheless, insights into the molecular mechanisms of biomineralization open up promising perspectives for bioinspired and biomimetic design and the development of inorganic-bioorganic multifunctional hybrids. Therefore, biomimetic approaches may disclose new synthetic routes under ambient conditions by integrating the concept of gene-regulated biomineralization principles. The skeletal structures of marine sponges provide an interesting example of biosilicification via enzymatically controlled and gene-regulated silica metabolism. Spicule formation is initiated intracellularly by a fine-tuned genetic mechanism, which involves silica deposition in vesicles (silicassomes) under the control of the enzyme silicatein, which has both catalytic and templating functions. In this review, we place an emphasis on the fabrication of biologically inspired materials with silicatein as a biocatalyst.

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“…4). The broad peak ranging from 830 to 1,160 cm −1 probably arises from Si-O-Si and Si-OH bonds and may also contain small amounts of constituents from other oxides such as CaO and Al 2 O 3 that are present in the glass slide [46,63] (Fig. 4a and c).…”

Section: Silica Film Formation Studymentioning

confidence: 99%

“…To the best of our knowledge none of the previously published studies on silica film formation using 'bioinspired routes' with experimentation at ambient temperature has fabricated silica films with controllable thickness and roughness [40][41][42][43][44][45][46][47][48][49]. Thus for the first time, we have investigated the possibility of fine-tuning the thickness and roughness of silica films by immobilising different amounts of BSA or lysozyme on PAH or ODA coated gold surfaces respectively, Fig.…”

Section: Silica Film Formation Studymentioning

confidence: 99%

“…Similarly, layer by layer deposition methods have been used to fabricate nanocomposite silica/polyamine films [44]. Brott and coworkers have used a synthetic R5 peptide in combination with a two-photon polymerization method to developed holographic patterns containing silica [45] and Kiick and coworkers have used polyamines to develop continuous silica coatings on glass fibres [46]. Approaches to the generation of silica films using environmentally benign processing conditions of pH and temperature and proteins such as sponge silicatein and lysozyme have also been developed.…”

Section: Introductionmentioning

confidence: 99%

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Fabrication of Tuneable Thickness Silica Films on Solid Surfaces Using Amines and Proteins

Rai

Perry

2009

Silicon

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We report an elegant and simple method to fabricate silica films with controlled thickness and roughness using protein coated solid surfaces as substrates. Bovine serum albumin (BSA) and lysozyme having different inherent charges have been used as model proteins (templates) to fabricate silica films. The formation of silica films was achieved by immobilization of BSA and lysozyme on amine (poly(allylamine) (PAH), poly(ethyleneimine) (PEI) and octadecyl amine (ODA)), coated surfaces, followed by treatment with silica precursors (tetramethoxysilane) under environmentally benign conditions of pH and temperature. BSA adsorbs strongly on hydrophilic surfaces (PAH and PEI coated) via electrostatic interaction, while lysozyme shows greater affinity towards hydrophobic surfaces (ODA coated) via largely hydrophobic interactions. The thickness (12-60 nm) and roughness of the films (1.30-3.75 nm) could be tuned by varying the amount of the adsorbed proteins on the amine-coated surfaces. This simple route to prepare silica films of controlled thickness could have potential application in membrane fabrication, biomedical devices, biosensors and next generation electronic components.

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Continuous Silica Coatings on Glass Fibers via Bioinspired Approaches

Cited by 32 publications

References 65 publications

Biocatalysis in Silicon Chemistry

Biocatalysis in Silicon Chemistry

Bioinspired synthesis of multifunctional inorganic and bio‐organic hybrid materials

Fabrication of Tuneable Thickness Silica Films on Solid Surfaces Using Amines and Proteins

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