Superhydrophilic Coating of Pine Wood by Plasma Functionalization of Self-Assembled Polystyrene Spheres

Dahle, Sebastian; Meuthen, J.; Gustus, René; Prowald, Alexandra; Viöl, Wolfgang; Maus‐Friedrichs, W.

doi:10.3390/coatings11020114

Cited by 7 publications

(7 citation statements)

References 69 publications

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“…Glutamic acid is also involved in the formation of disulfide bonds 11 , 12 which are essential for the stability of proteinoids. The process of self-assembly is a key factor in the formation of both polystyrene formation 13 , 14 and proteinoids 15 , 16 . However, there are some key differences in the way the two materials form.…”

Section: Introductionmentioning

confidence: 99%

Low frequency electrical waves in ensembles of proteinoid microspheres

Mougkogiannis

Adamatzky

2023

Sci Rep

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Proteinoids (thermal proteins) are produced by heating amino acids to their melting point and initiation of polymerisation to produce polymeric chains. Amino acid-like molecules, or proteinoids, can condense at high temperatures to create aggregation structures called proteinoid microspheres, which have been reported to exhibit strong electrical oscillations. When the amino acids L-glutamic acid (L-Glu) and L-aspartic acid (L-Asp) were combined with electric fields of varying frequencies and intensities, electrical activity resulted. We recorded electrical activity of the proteinoid microspheres’ ensembles via a pair of differential electrodes. This is analogous to extracellular recording in physiology or EEG in neuroscience but at micro-level. We discovered that the ensembles produce spikes of electrical potential, an average duration of each spike is 26 min and average amplitude is 1 mV. The spikes are typically grouped in trains of two spikes. The electrical activity of the ensembles can be tuned by external stimulation because ensembles of proteinoid microspheres can generate and propagate electrical activity when exposed to electric fields.

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Section: Introductionmentioning

confidence: 99%

Low frequency electrical waves in ensembles of proteinoid microspheres

Mougkogiannis

Adamatzky

2023

Sci Rep

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“…Glutamic acid is also involved in the formation of disulfide bonds [11,12] which are essential for the stability of proteinoids. The process of self-assembly is a key factor in the formation of both polystyrene formation [13,14] and proteinoids [15,16]. However, there are some key differences in the way the two materials form.…”

Section: Introductionmentioning

confidence: 99%

Low frequency electrical waves in ensembles of proteinoid microspheres

Mougkogiannis¹,

Adamatzky²

2023

Preprint

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Proteinoids (thermal proteins) are produced by heating amino acids to their melting point and initiation of polymerisation to produce polymeric chains. Amino acid-like molecules, or proteinoids, can condense at high temperatures to create aggregation structures called proteinoid microspheres, which have been reported to exhibit strong electrical oscillations. When the amino acids L-Glutamic acid (L-Glu) and L-Aspartic acid (L-Asp) were combined with electric fields of varying frequencies and intensities, electrical activity resulted. We recorded electrical activity of the proteinoid microspheres’ ensembles via a pair of differential electrodes. This is analogous to extracellular recording in physiology or EEG in neuroscience but at micro-level. We discovered that the ensembles produce spikes of electrical potential, an average duration of each spike is 26 min and average amplitude is 1 mV. The spikes are typically grouped in trains of two spikes. The electrical activity of the ensembles can be tuned by external stimulation because ensembles of proteinoid microspheres can generate and propagate electrical activity when exposed to electric fields.

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“…This facilitated the creation of a three‐dimensional PS network, entrapping the LASO NPs on the wood surface. [ 58,59 ] Therefore, the development of the three‐dimensional network could be enhanced by aluminium in the elemental composition of LASO, and could function as a coordination cross‐linker between negative charges on the PS surface, leading to a higher molecular weight three‐dimensional network. [ 60,61 ]…”

Section: Resultsmentioning

confidence: 99%

Facile production of smart superhydrophobic nanocomposite for wood coating towards long‐lasting glow‐in‐the‐dark photoluminescence

et al. 2021

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A smart photoluminescent nanocomposite surface coating was prepared for simple industrial production of long‐persisting phosphorescence and superhydrophobic wood. The photoluminescent nanocomposite coatings were capable of continuing to emit light in the dark for prolonged time periods that could reach 1.5 h. Lanthanide‐doped aluminium strontium oxide (LASO) nanoparticles at different ratios were immobilized in polystyrene (PS) and developed as a nanocomposite coating for wood substrates. To produce transparency in the prepared nanocomposite coating, LASO was efficiently dispersed in the form of nanoscaled particles to ensure homogeneous dispersion without agglomeration in the PS matrix. The coated wood showed an absorption band at 374 nm and two emission bands at 434 nm and 518 nm. The luminescence spectra showed both long‐persisting phosphorescence as well as photochromic fluorescence relying on the LASO ratio. The improved superhydrophobicity and resistance to scratching of the coated wood could be attributed to the LASO NPs incorporated in the polystyrene matrix. Compared with the uncoated wood substrate, the coated LASO‐PS nanocomposite film also displayed photostability and high durability. The current study demonstrated the potential high‐scale manufacturing of smart wood for some applications such as safety directional signs in buildings, household products, and smart windows.

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Superhydrophilic Coating of Pine Wood by Plasma Functionalization of Self-Assembled Polystyrene Spheres

Cited by 7 publications

References 69 publications

Low frequency electrical waves in ensembles of proteinoid microspheres

Low frequency electrical waves in ensembles of proteinoid microspheres

Low frequency electrical waves in ensembles of proteinoid microspheres

Facile production of smart superhydrophobic nanocomposite for wood coating towards long‐lasting glow‐in‐the‐dark photoluminescence

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