Architectural Control of Magnetic Semiconductor Nanocrystals

Jun, Young‐wook; Jung, Yoon Young; Cheon, Jinwoo

doi:10.1021/ja016887w

Cited by 397 publications

(322 citation statements)

References 26 publications

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“…9(c) and (d)). This situation can be ascribed to a kinetic regime [44], i.e. to the fact that the crystals grow faster on the faces with higher surface energy: {001} and {010}.…”

Section: Effect Of Reaction Timementioning

confidence: 99%

Soft solution fluorine-free synthesis of anatase nanoparticles with tailored morphology

Calatayud

Jardiel

Rodríguez

et al. 2013

Ceramics International

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Ti0 2 nanoparticles with tailored morphology have been synthesized under exceptionally soft conditions. The strategy is based on the use of a non-aqueous alcoholic reaction medium in which water traces, coming either from the air (atmospheric water) or from an ethanol-water azeotropic mixture (ethanol 96%), are incorporated in order to accelerate hydrolysis of the Ti-precursor. Moreover, organic surfactants have been used as capping agents so as to tailor crystal growth in certain preferential directions. Combinations of oleic acid and oleylamine, which lead to the formation of another surfactant, dioleamide, are employed instead of fluorine-based compounds, thus increasing the sustainability of the process. As a result, Ti0 2 nanostructured hierarchical microspheres and individual nanoparticles with exposed high-energy facets can be obtained at atmospheric pressure and temperatures as low as 78 °C.

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“…9(c) and (d)). This situation can be ascribed to a kinetic regime [44], i.e. to the fact that the crystals grow faster on the faces with higher surface energy: {001} and {010}.…”

Section: Effect Of Reaction Timementioning

confidence: 99%

Soft solution fluorine-free synthesis of anatase nanoparticles with tailored morphology

Calatayud

Jardiel

Rodríguez

et al. 2013

Ceramics International

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“…1). In the case of MnS semiconductor nanocrystals, [22] the nuclei of the rock-salt phase are more stable at high temperature (> 200 C) and cubes of 30 nm are easily obtained after injection of the molecular precursor Mn(S 2 CNEt 2 ) 2 into a hot solution containing an alkylamine stabilizer (Figs. 1a,2a).…”

Section: Dependence Of Final Shape On the Crystalline Phase Of Nucleimentioning

confidence: 99%

Anisotropic Shape Control of Colloidal Inorganic Nanocrystals

Lee

Cho

Cheon³

2003

Advanced Materials

604

462

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The systematic shape control of colloidal nanocrystals including one‐dimensional (1D) nanorods remains a key issue in the “bottom–up” approach of nanoscience. Here, we examine the anisotropic structural evolution of various semiconductor nanocrystals and systematically elucidate the key growth parameters for their shape control. The crystalline phase of nucleating seeds and kinetic growth regimes controlled by changing growth parameters are crucial for the determination of the 1D nanocrystal geometry.

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“…[37,38] To investigate the temperature effect, we fixed the molar ratios of 1 Eu:4 Se and 4 OLA:1 OA. Figure 5 demonstrates that relatively thin (small in diameter) and long nanorods were formed at 220 8C (Figure 5 a), while relatively thick (large in diameter) and short nanorods were obtained at 250 8C (Figure 5 b).…”

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confidence: 99%