Results 221 to 230 of about 14,690 (264)

Chiral surface plasmon-enhanced chiral spectroscopy: principles and applications

Nanoscale, 2021
In this review, the development context and scientific research results of chiral surface plasmons (SPs) in recent years are classified and described in detail.
Xijiao Mu, Li Hu, Yuqing Cheng, Yurui Fang, Mengtao Sun   +4 more
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Chiral Induction by Seeding Surface Assemblies of Chiral Switches

Journal of the American Chemical Society, 2011
It is demonstrated by scanning tunneling microscopy that coadsorption of a molecular chiral switch with a complementary, intrinsically chiral induction seed on the Au(111) surface leads to the formation of globally homochiral molecular assemblies.
Masini, Federico, Kalashnyk, Nataliya, Knudsen, Martin M, Cramer, Jacob R, Lægsgaard, Erik, Besenbacher, Flemming, Gothelf, Kurt V, Linderoth, Trolle R   +7 more
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Surface Stress of Stepped Chiral Metal Surfaces

Physical Review Letters, 2009
The use of surface stress as a physical probe for examining chiral effects in surfaces is proposed. First-principles calculations of the surface stress in stepped achiral and chiral bcc metal surfaces (Fe, Mo, and W) are presented. When no mirror symmetry is present, principal stress orientations are unconstrained; nevertheless, we find that the stress
M, Blanco-Rey, S J, Pratt, S J, Jenkins
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Chirality in adsorption on solid surfaces

Chemical Society Reviews, 2017
Chemical chirality on solid surfaces has important implications in analytical separations, selective crystallizations and catalysis, and may help explain the origin of homochirality in life.
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Nanostructured chiral surfaces

Nanotechnology, 1999
Chiral organic surfaces were generated via adsorption of the pure enantiomers of heptahelicene, a helically shaped aromatic hydrocarbon, on a Ni(111) surface in ultra high vacuum. Time-of-flight secondary mass spectrometry (ToF-SIMS) revealed that the molecule stays intact at room temperature.
K-H Ernst, M Böhringer, C F McFadden, P Hug, U Müller, U Ellerbeck   +5 more
openaire   +1 more source

Chiral Surfaces: Accomplishments and Challenges

ACS Nano, 2010
Chiral surfaces serve as media for enantioselective chemical processes. Their chirality is dictated by atomic- and molecular-level structure, and their enantioselectivity is determined by their enantiospecific interactions with chiral adsorbates. This Perspective describes three types of chiral metal surfaces: those modified by adsorption of chiral ...
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Chiral surfaces: The many faces of chiral recognition

Current Opinion in Colloid & Interface Science, 2017
Abstract Molecular recognition is integral to many biological, synthetic, and supramolecular systems. Recognition is often the nexus that controls the path, kinetics, and mechanism of chemical and biochemical processes. Recognition can be static in the case of more rigid molecular environments, or dynamic in which either the selector, selector target,
John C. Lang, Daniel W. Armstrong
openaire   +1 more source

Adsorption of Chiral Alcohols on “Chiral” Metal Surfaces

Langmuir, 1996
Kink sites on high Miller index surfaces are either left- or right-handed and can be thought of as chiral, when the step lengths on either side of the kink site are unequal. A silver single crystal was oriented and cut to expose the Ag(643) surface on one side and the Ag(643) surface on the other side.
Christopher F. McFadden, Paul S. Cremer, Andrew J. Gellman   +2 more
openaire   +1 more source

Surface Reactivity at “Chiral” Platinum Surfaces

Langmuir, 1999
The electro-oxidation of d- and l-glucose has been investigated using the chiral electrode Pt{643}R and its enantiomorph Pt{643}S. Both electrodes are demonstrated to be enantioselective. We ascribe this behavior to the inherent (left or right) “handedness” of kink sites present at the surface.
Ahmad Ahmadi, Gary Attard, Juan Feliu, Antonio Rodes   +3 more
openaire   +1 more source

Chiral metal surfaces for enantioselective processes

Nature Materials, 2020
Chiral surfaces are critical components of enantioselective heterogeneous processes such as those used to prepare enantiomerically pure pharmaceuticals. While the majority of chiral surfaces in practical use are based on achiral materials whose surfaces have been modified with enantiomerically pure chiral adsorbates, there are many inorganic materials ...
Nisha Shukla, Andrew J. Gellman
openaire   +2 more sources