Resorcinarene amine stabilized nanodiamond dispersions in organic solvents: applications in diamond film growth

Sheela, Vara Prasad; Xiao, Weican; Han, Sangbum; Zhou, Xi; Albin, Sacharia; Balasubramanian, Ramjee

doi:10.1039/c0jm04520a

Cited by 5 publications

(6 citation statements)

References 35 publications

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“…When comparing the spectra of the 80/20 PM (Fig 4iv) and the 80/20 SD (Fig 4v), we find an even larger peak around 1600 cm -1 in the 80/20 SD whereas 80/20 PM had no such peak present. This peak correlates again to the COO¯ group in carboxylic acid salts (Lamhert, 1987;Sheela et al, 2011), suggesting that the sorbate's carboxylate functional group has a key role to play in the formation of a new bond with Reb D in the solid dispersion complex. Furthermore, the fact that the 80/20 SD had a more intense peak at 1600 cm -1 than the 50/50 SD suggests that sorbate has more binding interactions with Reb D in the 80/20 SD than in the 50/50 SD.…”

Section: Fig 4amentioning

confidence: 85%

“…The spectrum in Fig 3D shows a peak formed at 1391 cm -1 for both the 50/50 SD and the 80/20 SD even though Reb D and K sorbate did not show a peak at that Raman shift. This peak correlates with the COO¯ group in carboxylic acid salts (Lamhert, 1987;Sheela et al, 2011), and may suggest a bond between sorbate (on the carboxylate end) and Reb D to form a co-complex structure. It is worthy to note that this peak was more intense with the 80/20 SD than with the 50/50 SD, indicating more hydrogen bond interactions between Reb D and K sorbate in the 80/20 SD than in the 50/50 SD.…”

Section: Raman Spectroscopymentioning

confidence: 89%

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Investigation of the solubility enhancement mechanism of rebaudioside D using a solid dispersion technique with potassium sorbate as a carrier

Pang

Zhang

et al. 2015

Food Chemistry

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Section: Fig 4amentioning

confidence: 85%

Section: Raman Spectroscopymentioning

confidence: 89%

Investigation of the solubility enhancement mechanism of rebaudioside D using a solid dispersion technique with potassium sorbate as a carrier

Pang

Zhang

et al. 2015

Food Chemistry

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“…[11][12][13][14][15][16][17][18][19][20][21]. A specially formulated nanodiamond dispersion called resorcinarene amine encapsulated microdiamant [22] was spin-coated on the wafer to achieve uniform seeding and dense distribution of nanodiamond particles over the entire wafer.…”

Section: Diamond Nucleationmentioning

confidence: 99%

Selective growth of nanodiamond films in microwave plasma

Albin

Williams

Zhou

et al. 2012

Composite Interfaces

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A patterned nanodiamond film is grown using microwave plasma-enhanced chemical vapor deposition. A selective growth method compatible with traditional silicon processing is described. A diamond pattern of high quality and moderate resolution is achieved. The process utilized is simple to generate patterns without etching diamond. A rectifying junction is demonstrated using a p-type nanodiamond and p-type silicon heterojunction with rectifying ratio of two orders of magnitude. This simple patterning technique could be applied in the fabrication of diamond electronic and mechanical devices and biological sensors. The plasma emission spectra indicate the presence of both CH and C 2 species, which are responsible for diamond growth. IntroductionAmong many methods employed for diamond film growth, chemical vapor deposition (CVD) using microwave (MW) plasma is quite popular due to several reasons. The well-confined plasma does not touch the reaction chamber walls and can be produced directly on the substrate. Hence, contamination in the grown films can be minimized unlike in hot filamentbased CVD. Indirect substrate heating is also achieved by the MW. Diamond films and coatings have found wide ranging applications in sensors [1], protective coatings [2], optical windows [3], and electronic and electrochemical devices [4]. Many such applications require patterning of diamond thin films. However, the unusual chemical inertness and hardness makes patterning of diamond quite difficult. Reactive ion etching is a common method for diamond patterning [5-8] that involves a reactive gas like SF 6 and a highly selective masking material such as gold. This process suffers from the problems of over etching and micro mask effect [9,10]. In this paper, we describe a novel method for selective growth of a nanodiamond film in a MW, which is compatible with conventional Si processing. A rectifying isotype junction is demonstrated using a p-type nanodiamond (p-NCD)/p-type silicon (p-Si) heterojunction diode with rectifying ratio of two orders of magnitude. Diamond patterns are achieved without dry etching.

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“…The synthesis of resorcinarene amine surfactant has been described elsewhere. 22 All organic solvents used in this study were dried and distilled prior to their use. Barnstead Nanopure water (18.2 MV cm) was used for all syntheses.…”

Section: General Remarksmentioning

confidence: 99%

Brust–Schiffrin synthesis of catalytic bipodal PdPt nanoparticles with some mechanistic insights

et al. 2013

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R. (2013). Brust-schiffrin synthesis of catalytic bipodal pdpt nanoparticles with some mechanistic insights.Brust-Schiffrin reduction of Pd and Pt precursors in the presence of resorcinarene amine surfactant led to the formation of substantially Pt rich, PdPt bimetallic nanoparticles of a V-shape or variants on the V-shape. New insights into this reaction are provided on the basis of reversed Brust-Schiffrin syntheses, DLS, UV-vis, and NMR analysis. Based on our experiments we conclude that the resorcinarene amine surfactant is part of the inverse micelle formed from TOABr and it also selectively complexes with the Pd salts prior to their reduction. Remarkably, the composition of the bipodal nanoparticles could be varied substantially by varying the reaction conditions. These anisotropic Pt rich PdPt bimetallic nanoparticles are expected to play a major role in catalytic and electrocatalytic applications and preliminary evidence shows that they are effective in mediating Suzuki cross-coupling reactions. Nanoparticle catalysts in CHCl3K2C03, Toluene, reflux 0-0 8558 | RSC Adv.,

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Resorcinarene amine stabilized nanodiamond dispersions in organic solvents: applications in diamond film growth

Cited by 5 publications

References 35 publications

Investigation of the solubility enhancement mechanism of rebaudioside D using a solid dispersion technique with potassium sorbate as a carrier

Investigation of the solubility enhancement mechanism of rebaudioside D using a solid dispersion technique with potassium sorbate as a carrier

Selective growth of nanodiamond films in microwave plasma

Brust–Schiffrin synthesis of catalytic bipodal PdPt nanoparticles with some mechanistic insights

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