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首页> 外文期刊>Chirality: The pharmacological, biological, and chemical consequences of molecular asymmetry >Chiral crystallization of glutamic acid on self assembled films of cysteine
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Chiral crystallization of glutamic acid on self assembled films of cysteine

机译:谷氨酸在半胱氨酸自组装膜上的手性结晶

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摘要

In this article, we describe the preparation and use of chiral surfaces derived from enantiomerically pure crystals of amino acids. For this purpose, we chose to employ a self-assembly process to grow nanoscale chiral films Of (+)-L or (-)-D cysteine, onto gold surfaces. We utilized those chiral films as resolving auxiliaries in the crystallization of enantiomers from solutions. To demonstrate the chiral discriminating ability of the chiral surfaces in crystallization processes, we investigated the crystallization of rac-glutamic acid onto the chiral films. Our study demonstrates the potential application of chiral films to control chirality throughout crystallization, where one enantiomer crystallizes on the chiral surfaces with relatively high enantiomeric excess. In addition, crystallization of pure glutamic acid enantiomers, and its racemic compound on to chiral films resulted in crystal morphology modification with preferred crystal orientation, which assists in the interpretation of the ability of our chiral surfaces to function as chiral selectors.
机译:在本文中,我们描述了衍生自氨基酸对映体纯净晶体的手性表面的制备和使用。为此,我们选择采用自组装工艺将(+)-L或(-)-D半胱氨酸的纳米级手性薄膜生长到金表面。我们利用这些手性薄膜作为拆分溶液中对映异构体结晶的助剂。为了证明手性表面在结晶过程中的手性识别能力,我们研究了外消旋谷氨酸在手性膜上的结晶。我们的研究表明手性薄膜在整个结晶过程中控制手性的潜在应用,其中一种对映异构体在手性表面上以相对高的对映体过量结晶。此外,纯谷氨酸对映异构体的结晶及其手性薄膜上的外消旋化合物导致具有优选晶体取向的晶体形态修饰,这有助于解释我们的手性表面用作手性选择剂的能力。

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