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7,212 Newest Publications about the topic crystals

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One-step surfactant-free synthesis of KSc2F7 microcrystals: controllable phases, rich morphologies and multicolor down conversion luminescence properties

03-Jul-2018 | Jie Xiong; Jie Yu; Yufeng Zhang; Wenpeng Xia; Shanshan Hu; Yanfei Zhang; Jun Yang, CrystEngComm, 2018

Homogeneous KSc2F7 microcrystals with controlled and abundant morphologies were prepared by a one-step hydrothermal route without employing any templates or surfactants. Particularly, uniform and well-defined KSc2F7 crystals with rod, sheet, flower-like, thin rectangular, xylitol-like and thin ...

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High contrast mechanochromic and thermochromic luminescence switching by a deep red emitting organic crystal

03-Jul-2018 | Manas K. Panda; Nayana Ravi; Asha P.; A. P Prakasham, CrystEngComm, 2018

In this study, we report a deep red emissive organic crystal that displays high contrast fluorescence switching under mechanical- and thermal stimulation. Upon mechanical grinding, the pristine red emissive crystals of 1R (λem = 667 nm) transformed to green emissive crystalline powder (λem = 550 ...

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A Rough Guide to Molecular Solid Solution: Design, Synthesis and Characterization of Mixed Crystals.

03-Jul-2018 | matteo lusi, CrystEngComm, 2018

Crystalline solid solutions are a long known class of materials that enables the fine tuning of a material structure and properties. Some of them like metal alloys have been employed in everyday life for thousands of years. As result, these phases represent an important part of materials science. ...

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Two-channel model for ultralow thermal conductivity of crystalline Tl3VSe4

29-Jun-2018 | Saikat Mukhopadhyay; David S. Parker; Brian C. Sales; Alexander A. Puretzky; Michael A. McGuire; Lucas Lindsay, Science , 2018

Solids with ultralow thermal conductivity are of great interest as thermal barrier coatings for insulation or thermoelectrics for energy conversion. However, the theoretical limits of lattice thermal conductivity () are unclear. In typical crystals a phonon picture is valid, whereas lowest ...

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Atomic-scale description of interfaces in rutile/sodium silicate glass–crystal composites

26-Jun-2018 | Paul C. M. Fossati; Michael J. D. Rushton; William E. Lee, Physical Chemistry Chemical Physics, 2018

In this work interfaces between (Na2O)x(SiO2)1−x glasses (for x = 0.0, 0.1 and 0.2) and TiO2 crystals are simulated using molecular dynamics and empirical potentials. Interfaces are presented for the distinct terminating surfaces of TiO2 with Miller indices ≤2, the properties of which have been ...

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Impacts of ionic liquid capping on morphology and photocatalytic performance of SbPO4 crystals

26-Jun-2018 | Shunqiang Chen; Yudong Di; Taohai Li; Feng Li; Wei Cao, CrystEngComm, 2018

By using [BMIM][PO4] as a coupling agent, a novel hydrothermal method is developed to prepare microspherical SbPO4 with different morphologies and photocatalytic abilities. An evolution from flower- to sphere-shaped products was observed. Regular SbPO4 microspheres with diameters of 10-35 μm were ...

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Amphiphilic composite material of titanosilicate@mesosilica/carbon as Pickering catalyst

26-Jun-2018 | Yu Ding; Hao Xu; Hai-Hong Wu; Ming Yuan He; PENG WU, Chemical Communication, 2018

Hierarchically core/shell-structured TS-1@silica/carbon composite material, synthesized from titanosilicate crystals and surfactant-mediated mesosilica/resol precursors via self-assembly and nanocasting route, fabricated stable oil-water-solid Pickering emulsions in the alkene/H2O2 media and thus ...

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Understanding solid-state photoswitching in [Re(OMe2-bpy)(CO)3([small eta]1-NO2)] crystals via in-situ photocrystallography

26-Jun-2018 | Lauren E. Hatcher, CrystEngComm, 2018

Single-crystal-to-single-crystal nitro → nitrito isomerism is reported for the novel rhenium(i)-bipyridine complex [Re(OMe2-bpy)(CO)3(η1-NO2)], achieving a maximum conversion of 66% to a photoinduced nitrito-(η1- [[O with combining low line]] NO) isomer under continuous illumination. The 3D X-ray ...

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Tuning the Crystal Structures of Metal-Tetraphenylporphine via Magnetic field

26-Jun-2018 | Chen Chen; Xiao-Tong He; Dan-Li Hong; Jin-Wen Wang; Yang-Hui Luo; Baiwang Sun, New Journal of Chemistry, 2018

In this work, two new single crystals of copper-tetraphenylporphine (Cu-TPP) (crystals 2 and 3), which were induced by external magnetic fields with strength of 0.5 and 0.8T, respectively, have been prepared and characterized by single-crystal X-ray diffraction and Hirshfeld surfaces analysis. ...

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Biological tissue-inspired tunable photonic fluid [Biophysics and Computational Biology]

26-Jun-2018 | Xinzhi Li; Amit Das; Dapeng Bi, Proceedings of the National Academy of Sciences current issue, 2018

We design an amorphous material with a full photonic bandgap inspired by how cells pack in biological tissues. The size of the photonic bandgap can be manipulated through thermal and mechanical tuning. These directionally isotropic photonic bandgaps persist in solid and fluid phases, hence giving ...

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