验证偶氮氨基酸席夫碱铜络合物对粘度和扩散的反比例效应假说

Yoshitora Wadayama, Ai Kaneda, Taiga Imae, Daisuke Nakane, T. Akitsu
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摘要

微流控装置中产生的微滴作为一个新的化学反应领域备受关注,有望提高反应活性。微小化的影响之一是,作用于物质扩散和移动的力与重力之比不同于普通溶剂。最近,我们提出了一个通过微缩来确定反应加速度的假设:如果将溶液的体积和粘度设定为在正常规模下不利于反应的条件,从而抑制了反应,那么在微流体中就可以促进该反应。因此,为了进行此次验证,(1) 我们使用了一种带有偶氮苯基团的氨基酸希夫碱铜(II)络合物来证明聚合物薄膜中的偏振诱导取向(在软物质基质中机械保持的重新定向)。报告了光学各向异性参数的数值数据。(2) 当确认反应在微流控装置及其偶氮衍生物的层流中被促进时,在正常大规模合成过程中使用铜(II)络合物来增加溶剂粘度或扩散。我们将获得并讨论以改变溶剂体积为区域的研究数据。体积和粘度的实验条件范围并没有导致合成产量的提高, (3) 具有偶氮苯基团的氨基酸希夫碱铜(II)络合物单晶生长的溶剂和粘度比较也是如此。虽然使用的溶剂的粘度是经过测量的,但使用扩散法还是获得了微晶。
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Verification of the Inverse Scale Effect Hypothesis on Viscosity and Diffusion by Azo-Amino Acid Schiff Base Copper Complexes
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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