Enantioselective Separation on Chiral Au Nanoparticles
نویسندگان
چکیده
منابع مشابه
Enantioselective separation on chiral Au nanoparticles.
The surfaces of chemically synthesized Au nanoparticles have been modified with d- or l-cysteine to render them chiral and enantioselective for adsorption of chiral molecules. Their enantioselective interaction with chiral compounds has been probed by optical rotation measurements during exposure to enantiomerically pure and racemic propylene oxide. The ability of optical rotation to detect ena...
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Rand S-propylene oxide (PO) have been shown to interact enantiospecifically with the chiral surfaces of Au nanopar‐ ticles (NPs) modified with Dor L-cysteine (cys). This enantiospecific interaction has been detected using optical polarimetry measurements made on solutions of the Dor L-cys modified Au (cys/Au) NPs during addition of racemic PO. The selective adsorption of one enantiomer of the P...
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Magnetic silica nanoparticles modified by a chiral selector were demonstrated to be useful in magnetic field induced separation of enantiomers.
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Oxygen molecules do not adsorb on flat gold surfaces at room temperature, but recent experimental results have demonstrated adsorption of oxygen on small, negatively charged gold nanoparticles. Here we report first-principles density functional calculations of oxygen adsorption on neutral and charged Aun nanoparticles. We find that: (i) Oxygen molecules chemisorb on Aun clusters, with typical b...
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In this review article chiral titanocenes and their application for the enantioselective hydrogenations of different unsaturated compounds are discussed, with a special emphasis on the kinetics and the practicality of the developed systems. The nature of enantioselectivity and the hydrogenation mechanisms are reviewed as well. Catalyst immobilization and the different immobilization techniques ...
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ژورنال
عنوان ژورنال: Journal of the American Chemical Society
سال: 2010
ISSN: 0002-7863,1520-5126
DOI: 10.1021/ja908219h