Progress in art and science of crystal growth and its impacts on modern society

Nishinaga, Tatau

doi:10.7567/jjap.54.050101

Cited by 7 publications

(4 citation statements)

References 86 publications

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“…Preparing high-quality crystalline samples suitable for analysis can be a difficult task, and yet, it is paramount to a multitude of chemical and biochemical studies. With the emergence of Xray crystallography over the last century, several techniques have been proposed for growing crystals, 1 such as solvent evaporation and vapor diffusion, to name a few. Establishing a range of crystallization techniques is essential for the successful growth of crystals, perhaps even rendering new structures accessible.…”

Section: ■ Introductionmentioning

confidence: 99%

Cosublimation: A Rapid Route Toward Otherwise Inaccessible Halogen-Bonded Architectures

Szell

Gabriel

Caron‐Poulin

et al. 2018

Crystal Growth & Design

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Several synthetic techniques are available for the preparation of halogen-bonded adducts, including traditional solvent-evaporation methods and mechanochemistry. With the intention of reducing solvent usage and experimental times, we establish cosublimation as a synthetic technique for preparing halogen-bonded cocrystals, focusing on the C–I···N motif involving nitrogen-containing heterocycles. We selected four common halogen-bond donors (I2, 1,4-diiodobenzene, 1,4-diiodotetrafluorobenzene, 1,3,5-trifluoro-2,4,6-triiodobenzene) and four halogen-bond acceptors (2,3,5,6-tetramethylpyrazine, 1,4-diazabicyclo[2.2.2]octane, 2,2′-bipyridyl, 1-adamantanecarbonitrile), by virtue of their range in volatility, and explored all 16 combinations via the following methods: solvent evaporation, overnight cosublimation in a sealed glass tube using a two-zone furnace, and expedited cosublimation in a vacuum sublimation apparatus. We show that the raw crystals obtained from overnight cosublimation are of suitable quality for single-crystal X-ray diffraction, resulting in five new crystal structures, two of which are, currently, unobtainable through other methods. Of these new structures, the first halogen bond to the nitrile group of 1-adamantanecarbonitrile is reported, resulting in the formation of a supramolecular rotor in a spinning top configuration as evidenced by 13C and 15N solid-state NMR spectroscopy. Strikingly, the cosublimation approach overcomes an anticooperative halogen-bonding effect to produce fully saturated cocrystals of the tritopic halogen bond donor 1,3,5-trifluoro-2,4,6-triiodobenzene with 1,4-diazabicyclo[2.2.2]octane. Finally, we show that cosublimation can be used to rapidly prepare and purify bulk samples using a vacuum sublimation apparatus, enabling the scalable preparation of halogen-bonded cocrystals within 10 to 30 min using common laboratory equipment. The methods described here enable a broad exploration of the polymorphic landscape and may be extended to the facile preparation of other classes of cocrystals.

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Section: ■ Introductionmentioning

confidence: 99%

Cosublimation: A Rapid Route Toward Otherwise Inaccessible Halogen-Bonded Architectures

Szell

Gabriel

Caron‐Poulin

et al. 2018

Crystal Growth & Design

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“…ZnO crystals can be obtained through different methods such as molecular beam epitaxy, radio frequency magnetron sputtering, metal-organic chemical vapor deposition, spray pyrolysis, chemical bath deposition, electrodeposition, pulsed laser deposition, laser molecular beam epitaxy, and the hydrothermal method 19 – 21 . Different growth techniques such as high-pressure melting technique 22 , solid-state reaction technique 23 and high-temperature hydrothermal technique 24 , 25 have been used to obtain ZnO powder or thin film that can be used as a scintillator.…”

Section: Introductionmentioning

confidence: 99%

Solution processed high aspect ratio ultra-long vertically well-aligned ZnO nano scintillators for potential X-ray imaging applications

Kurudirek,

Erickson

et al. 2024

Sci Rep

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We report the photon (PL), electron (CL) and X-ray (XEL) induced luminescence characteristics of high aspect ratio ultra-long (~ 50 µm) ZnO nanorods (NRs) and discuss the potential for fast X-ray detection based on the consistent and efficient visible emission (~ 580 nm) from ZnO NRs. Nanostructured ZnO scintillators were rearranged to form a vertically well-aligned NR design in order to help light absorption and coupling resulting in luminescent and fast scintillation properties. The design of the nanorod array combines the key advantages of a low-cost growth technique together with environmentally friendly and widely available materials. A low temperature hydrothermal method was adopted to grow ZnO NRs in one cycle growth and their structural, optical and X-ray scintillation properties were investigated. The relatively short (~ 10 µm) ZnO NRs emitting in the near-band-edge region were found to be almost insensitive to X-rays. On the other hand, the higher XEL response of long ZnO NRs, which is a key parameter for evaluation of materials to be used as scintillators for high quality X-ray detection and imaging, along with a decay time response in the order of ns confirmed promising scintillation properties for fast and high-resolution X-ray detector applications.

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“…For further advancement in the art and science of crystal growth, understanding of crystal growth is essential [1]. Thermodynamics is one of the most important tools to understand crystal growth.…”

Section: Introductionmentioning

confidence: 99%