Crystal growth and morphology control of needle-shaped organic crystals

McArdle, Patrick; Erxleben, Andrea

doi:10.1039/d3ce01041d

Cited by 2 publications

(1 citation statement)

References 117 publications

(208 reference statements)

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“…In the vapor diffusion method, crystals were crystallized under two conditions, varying the crystal growth rate depending on the size of the container. Here, needle-shaped crystals [37] were confirmed in methanol with diethyl ether vapor diffusion and in DMF with diethyl ether vapor diffusion. Crystals were obtained only in the methanol condition, with slow crystal growth.…”

Section: Crystallization Conditionsmentioning

confidence: 68%

Verification of the Inverse Scale Effect Hypothesis on Viscosity and Diffusion by Azo-Amino Acid Schiff Base Copper Complexes

Wadayama,

Kaneda,

Imae

et al. 2024

J. Compos. Sci.

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Microdroplets generated in microfluidic devices are attracting attention as a new chemical reaction field and are expected to improve reactivity. One of the effects of microscaling is that the ratio of the force that acts on the diffusion and movement of substances to gravity is different from that of ordinary solvents. Recently, we proposed a hypothesis for determining reaction acceleration through micro-miniaturization: If a reaction is inhibited by setting the volume and viscosity of the solution to conditions that are unfavorable to the reaction on a normal scale, that reaction can be promoted in microfluidics. Therefore, for the purpose of this verification, (1) we used an amino acid Schiff base copper(II) complex with an azobenzene group to demonstrate the polarization-induced orientation in a polymer film (the redirection that is mechanically maintained in a soft matter matrix). Numerical data on optical anisotropy parameters were reported. (2) When the reaction is confirmed to be promoted in laminar flow in a microfluidic device and its azo derivative, a copper(II) complex is used to increase the solvent viscosity or diffusion during synthesis on a normally large scale. We will obtain and discuss data on the investigation of changing the solvent volume as a region. The range of experimental conditions for volume and viscosity did not lead to an improvement in synthetic yield, nor did (3) the comparison of solvents and viscosity for single-crystal growth of amino acid Schiff base copper(II) complexes having azobenzene groups. A solvent whose viscosity was measured was used, but microcrystals were obtained using the diffusion method.

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Section: Crystallization Conditionsmentioning

confidence: 68%