Low-temperature growth of Si-based organic–inorganic hybrid materials, Si–O–C and Si–N–C, by organic Cat-CVD

Nakayama, Hiroshi; Hata, Tsuyoshi

doi:10.1016/j.tsf.2005.07.239

Cited by 25 publications

(9 citation statements)

References 11 publications

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“…Specifically, 100.9 and 101.6 eV (Si‐O 2p 3/2 and Si‐O 2p 1/2 respectively) indicate covalent bonding of Si with a long‐chain aldehyde (Effenberger et al ., ). The peak positions of XPS shift to the higher‐energy from 100.1 to 101.3 eV, depending on the average coordination number of O atoms with Si atoms in Si–O–C bonds by organic ligands (Nakayama & Hata, ). At present we have no direct evidence for the nature of the interaction between Si and the exact wall macromolecules (either in the form of polysaccharides or glycoproteins) identified at the molecular level, and thus it is difficult to directly relate the XPS signal arising from the Si‐O‐C or O‐Si‐C linkage to an exact organic ligand in the walls.…”

Section: Resultsmentioning

confidence: 99%

Evidence for ‘silicon’ within the cell walls of suspension‐cultured rice cells

et al. 2013

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SummaryDespite the ubiquity and beneficial role of silicon (Si) in plant biology, structural and chemical mechanisms operating at the single-cell level have not been extensively studied.To obtain insights regarding the effect of Si on individual cells, we cultivated suspended rice (Oryza sativa) cells in the absence and presence of Si and analyzed single cells using a combination of physical techniques including atomic force microscopy (AFM).Si is naturally present as a constituent of the cell walls, where it is firmly bound to the cell wall matrix rather than occurring within intra-or extracellular silica deposition, as determined by using inductively coupled plasma mass spectrometry (ICP-MS) and X-ray photoelectron spectroscopy (XPS). This species of Si, linked with the cell wall matrix, improves the structural stability of cell walls during their expansion and subsequent cell division. Maintaining cell shape is thereby enhanced, which may be crucial for the function and survival of cells.This study provides further evidence that organosilicon is present in plant cell walls, which broadens our understanding of the chemical nature of 'anomalous Si' in plant biology.

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Section: Resultsmentioning

confidence: 99%

Evidence for ‘silicon’ within the cell walls of suspension‐cultured rice cells

et al. 2013

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“…Specifically, 100.9 and 101.6 eV (Si–O 2p 3/2 and Si–O 2p 1/2 , respectively) indicate covalent bonding of Si with a long‐chain aldehyde (Effenberger et al ., ). The peak positions of XPS shift to the higher energy depending on the average coordination number of O atoms with Si atoms in Si–O–C bonds by organic ligands (Nakayama & Hata, ; He et al ., ). It is relatively difficult to detect this unknown HC‐bound form of Si using FT‐IR spectroscopy as a result of its trace amounts which are below the detection limit of FT‐IR.…”

Section: Discussionmentioning

confidence: 99%

A hemicellulose‐bound form of silicon with potential to improve the mechanical properties and regeneration of the cell wall of rice

Wang

2015

New Phytologist

158

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SummarySilicon (Si) plays a large number of diverse roles in plants, but the structural and chemical mechanisms operating at the single-cell level remain unclear.We isolate the cell walls from suspension-cultured individual cells of rice (Oryza sativa) and fractionate them into three main fractions including cellulose (C), hemicellulose (HC) and pectin (P).We find that most of the Si is in HC as determined by inductively coupled plasma-mass spectrometry (ICP-MS), where Si may covalently crosslink the HC polysacchrides confirmed by X-ray photoelectron spectroscopy (XPS). The HC-bound form of Si could improve both the mechanical property and regeneration of the cell walls investigated by a combination of atomic force microscopy (AFM) and confocal laser scanning microscopy (CLSM).This study provides further evidence that HC could be the major ligand bound to Si, which broadens our understanding of the chemical nature of 'anomalous' Si in plant cell walls.

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“…The kinds of films prepared by this technique are expanding. Amorphous silicon (a-Si) [1,2], amorphous silicon germanium (a-SiGe) [3], amorphous silicon carbide (a-SiC) [4,5], amorphous carbon [6], silicon nitride (SiN x ) [7,8], silicon dioxide (SiO 2 ) [9], aluminum oxide (Al 2 O 3 ) [10], gallium nitride (GaN) [11][12][13][14], aluminum nitride (AlN) [15], poly-crystalline silicon (poly-Si) [16], carbon-doped silicon oxide (Si-O-C) [17], carbon-doped silicon nitride (Si-N-C) [17], diamond [18,19], carbon nanotube [20], carbon nanowall [21,22], carbon nanoparticles [20], poly-tetra-fluoro-ethylene (PTFE) and poly-glycidyl-methacrylate (PGMA) [23,24] can be all prepared by this technique.…”

Section: Introductionmentioning

confidence: 99%