Is Dual Morphology of Rock‐Salt Crystals Possible with a Single Additive? The Answer Is Yes, with Barbituric Acid

Sen, Anik; Ganguly, Bishwajit

doi:10.1002/ange.201206170

Cited by 5 publications

(3 citation statements)

References 62 publications

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“…Crystals of cubic morphology usually grow in the ⟨100⟩ direction, which requires lower energy. 31 Furthermore, planar growth in the ⟨100⟩ direction is also observed in the form of steps on the {100} facets, which are particularly obvious in pits on these facets as apparent in Figure 2a,d. 32 The {100} planes also seem to be cleavage planes (see Figure S1).…”

Section: Resultsmentioning

confidence: 91%

“…The agreement between the ⟨001⟩ crystal axes in the axonometric projections and the edges of the crystals in the SEM images proves that the crystal faces are {001} planes, which was the case for every pyramidal- and prismatic-shaped crystal investigated. Crystals of cubic morphology usually grow in the ⟨100⟩ direction, which requires lower energy . Furthermore, planar growth in the ⟨100⟩ direction is also observed in the form of steps on the {100} facets, which are particularly obvious in pits on these facets as apparent in Figure a,d .…”

Section: Results and Discussionmentioning

confidence: 99%

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Morphology of Melt-Quenched Lead Telluride Single Crystals

Liang

Ocelík

Baas

et al. 2021

ACS Appl. Mater. Interfaces

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Metastable single crystals of nonstoichiometric Pb 1– x Te are obtained by rapid cooling from the melt. The composition and crystallographic morphology are studied using X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and electron backscatter diffraction. Most single crystals have cubic, pyramidal, or hemispherical shapes with sizes ranging from 50 to 400 μm. All crystals adopt the same face-centered cubic rock salt structure, and the crystal growth direction is ⟨100⟩. The bulk part of the rapidly cooled material solidifies in the form of a Te-rich polycrystalline material in which grains are separated by the PbTe–Te eutectic phase. The stabilization of nonstoichiometric Pb 1– x Te provides further scope for the optimization of lead telluride-based thermoelectric materials.

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Section: Resultsmentioning

confidence: 91%

Section: Results and Discussionmentioning

confidence: 99%

Morphology of Melt-Quenched Lead Telluride Single Crystals

Liang

Ocelík

Baas

et al. 2021

ACS Appl. Mater. Interfaces

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“…One approach is by applying the templates (hard or soft template) to physically confine the size, dimension, and morphology of the crystal grain growth, while the other is by applying appropriate additives (capping agent, surfactant, block copolymer, etc. ) to kinetically control the growth rate of specific crystal facets. However, the removal process of templates or organic additives is usually time and energy consuming, accompanied with the risk of introducing heterogeneous impurities.…”

Section: Introductionmentioning

confidence: 99%

Tailoring NiO Nanostructured Arrays by Sulfate Anions for Sodium‐Ion Batteries

Zhang

Lim

Huang

et al. 2018

Small

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In this contribution, a novel sulfate-ion-controlled synthesis is developed to fabricate freestanding nickel hydroxide nanoarrays on Ni substrate. As an inorganic morphology-controlled agent, SO ions play a critical role in controlling the crystal growth and the nanoarray morphologies, by modulating the growth rate of adsorbed crystal facets or inserting into the metal hydroxide interlayers. By controlling the SO concentration, the nanostructured arrays are tailored from one-dimensional (1D) Ni(SO ) (OH) nanobelt arrays to hierarchical β-Ni(OH) nanosheet arrays. With further graphene oxide modification and postheat treatment, the obtained NiO/graphene hybrid nanoarrays show great potential for high-performance sodium-ion batteries, which exhibit a cyclability of 380 mAh g after undergoing 100 cycles at 0.5 C and reach a rate capability of 335 mA h g at 10 C.

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Antifreeze Protein‐Induced Selective Crystallization of a New Thermodynamically and Kinetically Less Preferred Molecular Crystal

Wang¹,

Wen²,

Golen³

et al. 2013

Chemistry A European J

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The formation of a new, dihydrate crystalline form of 5-methyluridine (m5U) was selectively induced by a protein additive, antifreeze protein (AFP) in a highly efficient manner (in 10−6 molar scale, while known kinetic additives need 0.1 molar scale). The hemihydrate form (form I, the only previously known crystalline form of m5U) and the dihydrate form of m5U (form II) obtained herein were characterized using X-ray crystallography and differential scanning calorimetry (DSC). Compared to form I, remarkably, form II is thermodynamically and kinetically less preferred. The presence of AFP can selectively inhibit the appearance of form I and hence allows the growth of form II, the pure form of which cannot grow directly from m5U supersaturated solutions under the same conditions. An explanation supported by both experimental and theoretical results was provided for the AFP-induced selection process. Implications on AFP-induced ice shape changes have also been discussed. Control of crystallization from supersaturated solutions is of great interest in both fundamental research and practical applications in fields like chemistry, pharmacology and materials science. These findings suggest that crystallization processes using AFPs is valuable for selective growth of hydrates and polymorphs of important pharmaceutical compounds.

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Is Dual Morphology of Rock‐Salt Crystals Possible with a Single Additive? The Answer Is Yes, with Barbituric Acid

Cited by 5 publications

References 62 publications

Morphology of Melt-Quenched Lead Telluride Single Crystals

Morphology of Melt-Quenched Lead Telluride Single Crystals

Tailoring NiO Nanostructured Arrays by Sulfate Anions for Sodium‐Ion Batteries

Antifreeze Protein‐Induced Selective Crystallization of a New Thermodynamically and Kinetically Less Preferred Molecular Crystal

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