251
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252
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Han JW, Sholl DS. Enantiospecific adsorption of amino acids on hydroxylated quartz (0001). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:10737-10745. [PMID: 19496574 DOI: 10.1021/la901264e] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Density functional theory calculations have been used to study the adsorption of glycine, alanine, serine, and cysteine on the hydroxylated (0001) surface of alpha-quartz. We found negligible differences in adsorption energies for the most stable minima of enantiomers of alanine on this surface. There are, however, measurable energy differences between the two enantiomers of both serine and cysteine in their most stable states. The source of this enantiospecificity is mainly the difference in the strength of hydrogen bonds between the surface and the two enantiomers. Our results provide initial information on how amino acids can exhibit enantiospecific adsorption on hydroxylated quartz surfaces.
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Affiliation(s)
- Jeong Woo Han
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, Georgia 30332-0100, USA
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253
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Kuhn A, Fischer P. Absolute Asymmetric Reduction Based on the Relative Orientation of Achiral Reactants. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200902841] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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254
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Zhang J, Chen S, Bu X. Nucleotide-Catalyzed Conversion of Racemic Zeolite-Type Zincophosphate into Enantioenriched Crystals. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200903001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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255
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Kahr B, Bing Y, Kaminsky W, Viterbo D. Turinese Stereochemistry: Eligio Perucca's Enantioselectivity and Primo Levi's Asymmetry. Angew Chem Int Ed Engl 2009; 48:3744-8. [DOI: 10.1002/anie.200801840] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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256
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Kahr B, Bing Y, Kaminsky W, Viterbo D. Turiner Stereochemie: Eligio Peruccas Enantioselektivität und Primo Levis Asymmetrie. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200801840] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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257
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Liu L, Hong DJ, Lee M. Chiral assembly from achiral rod-coil molecules triggered by compression at the air-water interface. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:5061-5067. [PMID: 19301880 DOI: 10.1021/la804043z] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A series of achiral rod-coil molecules consisting of an oligo(p-phenylene) conjugated rod with a poly(ethylene oxide) or poly(propylene oxide) coil laterally attached through an imidazole linkage were synthesized, and their interfacial behaviors were investigated. Compounds 1a and 1b have a similar surface behavior with a shoulder indicating a transformation of rod segments from flat-on to vertical orientation. Interestingly, CD and AFM suggest chiral films are formed when the LB films were deposited after the shoulder. Although compound 1c shows different surface behavior because the PEO chains dissolved into water upon compression, macroscopic chirality was also detected. In contrast, compound 2, based on a reduced conformational rigidity of the aromatic rod segment, does not form chiral assemblies. Combining the data collected, the cooperative interaction of the hydrogen bond between the molecules and pi-pi stacking as well as the steric constraint between the aromatic rod segments are responsible for the macroscopic chirality. Such kind of stacking can be realized through a molecular design and a lateral compression. A deep insight into the relationship between the molecular structure and the chirality was gained.
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Affiliation(s)
- Libin Liu
- Center for Supramolecular Nano-Assembly, Department of Chemistry, Yonsei University, Seoul 120-749, Korea
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258
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Han JW, Kitchin JR, Sholl DS. Step decoration of chiral metal surfaces. J Chem Phys 2009; 130:124710. [DOI: 10.1063/1.3096964] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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259
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Gan H, Tang K, Sun T, Hirtz M, Li Y, Chi L, Butz S, Fuchs H. Selective Adsorption of DNA on Chiral Surfaces: Supercoiled or Relaxed Conformation. Angew Chem Int Ed Engl 2009; 48:5282-6. [DOI: 10.1002/anie.200806295] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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260
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Gan H, Tang K, Sun T, Hirtz M, Li Y, Chi L, Butz S, Fuchs H. Selective Adsorption of DNA on Chiral Surfaces: Supercoiled or Relaxed Conformation. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200806295] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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261
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Baffou G, Mayne AJ, Comtet G, Dujardin G, Stauffer L, Sonnet P. SiC(0001) 3 × 3 Heterochirality Revealed by Single-Molecule STM Imaging. J Am Chem Soc 2009; 131:3210-5. [DOI: 10.1021/ja806002k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Guillaume Baffou
- Laboratoire de Photophysique Moléculaire, Université Paris XI, 91405 Orsay, France, and Institut de Science des Matériaux de Mulhouse (IS2M), LRC CNRS 7228, Université de Haute Alsace, 68093 Mulhouse, France
| | - Andrew J. Mayne
- Laboratoire de Photophysique Moléculaire, Université Paris XI, 91405 Orsay, France, and Institut de Science des Matériaux de Mulhouse (IS2M), LRC CNRS 7228, Université de Haute Alsace, 68093 Mulhouse, France
| | - Geneviève Comtet
- Laboratoire de Photophysique Moléculaire, Université Paris XI, 91405 Orsay, France, and Institut de Science des Matériaux de Mulhouse (IS2M), LRC CNRS 7228, Université de Haute Alsace, 68093 Mulhouse, France
| | - Gérald Dujardin
- Laboratoire de Photophysique Moléculaire, Université Paris XI, 91405 Orsay, France, and Institut de Science des Matériaux de Mulhouse (IS2M), LRC CNRS 7228, Université de Haute Alsace, 68093 Mulhouse, France
| | - Louise Stauffer
- Laboratoire de Photophysique Moléculaire, Université Paris XI, 91405 Orsay, France, and Institut de Science des Matériaux de Mulhouse (IS2M), LRC CNRS 7228, Université de Haute Alsace, 68093 Mulhouse, France
| | - Philippe Sonnet
- Laboratoire de Photophysique Moléculaire, Université Paris XI, 91405 Orsay, France, and Institut de Science des Matériaux de Mulhouse (IS2M), LRC CNRS 7228, Université de Haute Alsace, 68093 Mulhouse, France
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262
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Mutti FG, Zoppellaro G, Gullotti M, Santagostini L, Pagliarin R, Andersson KK, Casella L. Biomimetic Modelling of Copper Enzymes: Synthesis, Characterization, EPR Analysis and Enantioselective Catalytic Oxidations by a New Chiral Trinuclear Copper(II) Complex. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200800899] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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263
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Blanco-Rey M, Pratt SJ, Jenkins SJ. Surface stress of stepped chiral metal surfaces. PHYSICAL REVIEW LETTERS 2009; 102:026102. [PMID: 19257296 DOI: 10.1103/physrevlett.102.026102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2008] [Indexed: 05/27/2023]
Abstract
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 is smoothly varying along a suitably chosen stereographic zone of surfaces. Stress ellipses for Fe differ qualitatively from those of Mo and W, suggesting that its surface stress has a distinct origin.
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Affiliation(s)
- M Blanco-Rey
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom.
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264
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Ha JM, Solovyov A, Katz A. Postsynthetic modification of gold nanoparticles with calix[4]arene enantiomers: origin of chiral surface plasmon resonance. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:153-158. [PMID: 19072069 DOI: 10.1021/la802665t] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Gold nanoparticles postsynthetically modified with chiral 1,3-disubstituted diamino calix[4]arene ligands 2a and 2b are shown to exhibit a circular dichroism (CD)-active surface plasmon resonance absorption (SPR) band. Electronic communication between adsorbed ligand and the gold nanoparticle surface is evidenced in an almost 10-fold increase in the ligand molar ellipticity in the pi-pi* transition spectral range when bound to the gold surface relative to free solution. The footprint of ligand on the gold nanoparticle surface at saturation is measured to be 91 A(2) via monitoring the red shift in the SPR band accompanying ligand adsorption. At ligand concentrations above that required for surface saturation, the ellipticity of the band in the SPR spectral range plateaus to a constant value, whereas the ellipticity of the band in the pi-pi* transition spectral range continues to increase in a manner that corresponds to free ligand in solution. This critical observation correlates ligand adsorption and the onset of the CD-active SPR band. On the basis of the packing characteristics of the bulky calixarene ligand, which are controlled by achiral tert-butyl groups, and the postsynthetic nature of nanoaprticle surface modification of 4.7 nm gold cores used in this study, which precludes synthesis of chiral arrangements of gold atoms, a mechanism responsible for the CD-active SPR bands is proposed, which is based upon the influence of the asymmetric center of the chiral adsorbate on the electronic states of the metal nanoparticle core-an explanation supported by the observed interactions between the gold surface and adsorbed ligand.
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Affiliation(s)
- Jeong-Myeong Ha
- Department of Chemical Engineering, University of California at Berkeley, Berkeley, California 94720-1462, USA
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265
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Zhang J, Chen S, Bu X. Nucleotide-catalyzed conversion of racemic zeolite-type zincophosphate into enantioenriched crystals. Angew Chem Int Ed Engl 2009; 48:6049-51. [PMID: 19598199 PMCID: PMC2769012 DOI: 10.1002/anie.200903001] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jian Zhang
- Department of Chemistry and Biochemistry, California State University, Long Beach, 1250 Bellflower Boulevard, Long Beach, CA 90840
| | - Shumei Chen
- Department of Chemistry and Biochemistry, California State University, Long Beach, 1250 Bellflower Boulevard, Long Beach, CA 90840
| | - Xianhui Bu
- Department of Chemistry and Biochemistry, California State University, Long Beach, 1250 Bellflower Boulevard, Long Beach, CA 90840
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266
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Raval R. Chiral expression from molecular assemblies at metal surfaces: insights from surface science techniques. Chem Soc Rev 2009; 38:707-21. [DOI: 10.1039/b800411k] [Citation(s) in RCA: 250] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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267
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Cheung PSM, Cuccia LA. Amino acid directed mirror symmetry breaking and chiral amplification of ethylenediammonium sulfate crystals. Chem Commun (Camb) 2009:1337-8. [DOI: 10.1039/b823029c] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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268
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Szabelski P, Panczyk T, Drach M. Monte Carlo modeling of chiral adsorption on nanostructured chiral surfaces and slit pores. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:12972-12980. [PMID: 18942862 DOI: 10.1021/la802622y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Adsorptive separation of chiral molecules is a powerful technique that has long been used in the chemical and pharmaceutical industries. An important challenge in this field is to design and optimize new adsorbents to provide selective discrimination of enantiomers. In this article, we introduce an off-lattice model of chiral adsorption on nanostructured surfaces and slit pores with the aim of predicting their enantioslective properties. The concept presented here involves finding the optimal chiral pattern of active sites on the pore walls that maximizes the difference between the binding energies of the enantiomers. Our initial effort focuses on chiral molecules that do not have specific interactions with the pore surface. One candidate meeting this requirement is 1,2-dimethylcyclopropane (DMCP), a chiral hydrocarbon whose interaction with a model pore surface was described using the Lennard-Jones potential. To model the adsorption of DMCP, we used the Monte Carlo simulation method. It was demonstrated that the separation of the enantiomers of DMCP is hardly obtainable because of the smoothness of the potential energy surface for molecules physisorbed in the pore. However, the simulated results allowed the identification of key factors that influence the binding of the enantiomers of DMCP to the pore walls with a special distribution of active sites. This information will be useful in future considerations of the adsorption of more complex chiral molecules.
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Affiliation(s)
- Paweł Szabelski
- Department of Theoretical Chemistry, Maria-Curie Skłodowska University, Pl. M. C. Skłodowskiej 3, 20-031 Lublin, Poland.
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269
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Hamilton BD, Weissbuch I, Lahav M, Hillmyer MA, Ward MD. Manipulating Crystal Orientation in Nanoscale Cylindrical Pores by Stereochemical Inhibition. J Am Chem Soc 2008; 131:2588-96. [DOI: 10.1021/ja807193s] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Benjamin D. Hamilton
- Department of Chemical Engineering and Materials Science and the Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Materials and Interfaces, The Weizmann Institute of Science, 76100 Rehovot, Israel, and Molecular Design Institute, Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003-6688
| | - Isabelle Weissbuch
- Department of Chemical Engineering and Materials Science and the Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Materials and Interfaces, The Weizmann Institute of Science, 76100 Rehovot, Israel, and Molecular Design Institute, Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003-6688
| | - Meir Lahav
- Department of Chemical Engineering and Materials Science and the Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Materials and Interfaces, The Weizmann Institute of Science, 76100 Rehovot, Israel, and Molecular Design Institute, Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003-6688
| | - Marc A. Hillmyer
- Department of Chemical Engineering and Materials Science and the Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Materials and Interfaces, The Weizmann Institute of Science, 76100 Rehovot, Israel, and Molecular Design Institute, Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003-6688
| | - Michael D. Ward
- Department of Chemical Engineering and Materials Science and the Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, Department of Materials and Interfaces, The Weizmann Institute of Science, 76100 Rehovot, Israel, and Molecular Design Institute, Department of Chemistry, New York University, 100 Washington Square East, New York, New York 10003-6688
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270
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271
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272
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Kahr B, Freudenthal JH. Dendritic crystal growth, differential circular scattering, and the origin of biomolecular homochirality. Chirality 2008; 20:973-7. [DOI: 10.1002/chir.20539] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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273
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Tang K, Gan H, Li Y, Chi L, Sun T, Fuchs H. Stereoselective Interaction between DNA and Chiral Surfaces. J Am Chem Soc 2008; 130:11284-5. [DOI: 10.1021/ja8044184] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kangjian Tang
- Physikalisches Institut, Muenster University, D-48149 Muenster, Germany, Center for Nanotechnology, Muenster University, D-48151, Germany, and Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Hui Gan
- Physikalisches Institut, Muenster University, D-48149 Muenster, Germany, Center for Nanotechnology, Muenster University, D-48151, Germany, and Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Yong Li
- Physikalisches Institut, Muenster University, D-48149 Muenster, Germany, Center for Nanotechnology, Muenster University, D-48151, Germany, and Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Lifeng Chi
- Physikalisches Institut, Muenster University, D-48149 Muenster, Germany, Center for Nanotechnology, Muenster University, D-48151, Germany, and Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Taolei Sun
- Physikalisches Institut, Muenster University, D-48149 Muenster, Germany, Center for Nanotechnology, Muenster University, D-48151, Germany, and Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
| | - Harald Fuchs
- Physikalisches Institut, Muenster University, D-48149 Muenster, Germany, Center for Nanotechnology, Muenster University, D-48151, Germany, and Department of Chemistry, Fudan University, Shanghai 200433, P. R. China
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274
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Castro-Puyana M, Salgado A, Hazen RM, Crego AL, Alegre MLM. The first contribution of capillary electrophoresis to the study of abiotic origins of homochirality: investigation of the enantioselective adsorption of 3-carboxy adipic acid on minerals. Electrophoresis 2008; 29:1548-55. [PMID: 18324727 DOI: 10.1002/elps.200700611] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
CE with UV detection was used for the first time to determine the enantioselective adsorption of the short-chain tricarboxylic acid, 3-carboxy adipic acid, on minerals as a mean of investigating plausible mechanisms for the origin of biochemical homochirality on Earth. The use of vancomycine as chiral selector in the separation buffer using the partial filling technique enabled the separation of the two enantiomers of this organic acid in about 12 min. Taking into account that this compound has a low absorption of the UV light, and in order to achieve the sensitivity needed to determine the enantiomeric excess of samples of 3-carboxy adipic acid adsorbed on minerals, we applied a strategy consisting of a field-amplified sample stacking together with the use of a bubble capillary and detection at low wavelength (192 nm). This combination enabled an LOD of about 10(-7) M and the determination of the enantiomeric excess of 3-carboxy adipic acid adsorbed on calcite and feldspar mineral samples at subnanomol levels of this acid. Results showed that an enantioselective adsorption of the enantiomers of 3-carboxy adipic acid on minerals took place.
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Affiliation(s)
- María Castro-Puyana
- Department of Analytical Chemistry, Faculty of Chemistry, University of Alcalá, Alcalá de Henares, Madrid, Spain
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275
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Szabelski P. Chiral nanopatterned surfaces as versatile enantiospecific adsorbents: A Monte Carlo model. J Chem Phys 2008; 128:184702. [DOI: 10.1063/1.2913244] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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276
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Bhatia B, Sholl DS. Characterization of enantiospecific chemisorption on chiral Cu surfaces vicinal to Cu(111) and Cu(100) using density functional theory. J Chem Phys 2008; 128:144709. [DOI: 10.1063/1.2894841] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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277
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278
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Shan Monica Cheung P, Gagnon J, Surprenant J, Tao Y, Xu H, Cuccia LA. Complete asymmetric amplification of ethylenediammonium sulfate using an abrasion/grinding technique. Chem Commun (Camb) 2008:987-9. [DOI: 10.1039/b716977a] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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279
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Kulp EA, Switzer JA. Electrochemical Biomineralization: The Deposition of Calcite with Chiral Morphologies. J Am Chem Soc 2007; 129:15120-1. [DOI: 10.1021/ja076303b] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Elizabeth A. Kulp
- Department of Chemistry and Graduate Center for Materials Research, University of MissouriRolla, Rolla, Missouri 65409-1170
| | - Jay A. Switzer
- Department of Chemistry and Graduate Center for Materials Research, University of MissouriRolla, Rolla, Missouri 65409-1170
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280
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Teng HH, Chen Y, Pauli E. Direction specific interactions of 1,4-dicarboxylic acid with calcite surfaces. J Am Chem Soc 2007; 128:14482-4. [PMID: 17090031 DOI: 10.1021/ja063167m] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Interactions of succinic acid (SUC) with the {104} cleavage faces of calcite show a strong preference in crystallographic directions. In situ atomic force microscopy revealed that the morphology of etch pits on the crystal surfaces experienced a transition from the common rhombus to a hexagon upon the introduction of SUC. The pit shape further evolved from 6-sided to 7-sided and eventually to 5-sided with increasing concentrations of SUC. Analysis indicates that the morphology changes may result from SUC preferentially binding to the [42] and [010] edges of the (104) plane to selectively slow down their step speed.
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Affiliation(s)
- H Henry Teng
- Department of Chemistry, George Washington University, Washington, D.C. 20052, USA.
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281
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Mallat T, Orglmeister E, Baiker A. Asymmetric Catalysis at Chiral Metal Surfaces. Chem Rev 2007; 107:4863-90. [DOI: 10.1021/cr0683663] [Citation(s) in RCA: 501] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- T. Mallat
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Hönggerberg, CH-8093 Zurich, Switzerland
| | - E. Orglmeister
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Hönggerberg, CH-8093 Zurich, Switzerland
| | - A. Baiker
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, Hönggerberg, CH-8093 Zurich, Switzerland
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282
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Liu N, Haq S, Darling GR, Raval R. Direct Visualization of Enantiospecific Substitution of Chiral Guest Molecules into Heterochiral Molecular Assemblies at Surfaces. Angew Chem Int Ed Engl 2007; 46:7613-6. [PMID: 17712805 DOI: 10.1002/anie.200701675] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ning Liu
- Surface Science Research Centre, Department of Chemistry, The University of Liverpool, Liverpool, UK
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283
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Liu N, Haq S, Darling G, Raval R. Direct Visualization of Enantiospecific Substitution of Chiral Guest Molecules into Heterochiral Molecular Assemblies at Surfaces. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200701675] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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284
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Sarkar SK, Burla N, Bohannan EW, Switzer JA. Enhancing Enantioselectivity of Electrodeposited CuO Films by Chiral Etching. J Am Chem Soc 2007; 129:8972-3. [PMID: 17595093 DOI: 10.1021/ja073640b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Shaibal K Sarkar
- Department of Chemistry and Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, Missouri 65409-1170, USA
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285
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Dressler DH, Mastai Y. Enantioselective crystallization of histidine on chiral self-assembled films of cysteine. J Colloid Interface Sci 2007; 310:653-60. [PMID: 17412357 DOI: 10.1016/j.jcis.2007.02.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2006] [Revised: 02/06/2007] [Accepted: 02/07/2007] [Indexed: 11/29/2022]
Abstract
In this paper, the preparation and use of chiral surfaces derived from enantiomerically pure crystals of amino acids are described. For this purpose, a self-assembly process to grow thin chiral films of (+)-L- or (-)-D-cysteine on gold surfaces was chosen. These chiral films were utilized as crystallization catalysts in the crystallization of enantiomers from solutions. To demonstrate the chiral discrimination power of the chiral surfaces in crystallization processes, the crystallization of racemic histidine onto the chiral films was investigated. Our study demonstrates the potential application of chiral films to control chirality throughout crystallization, where one enantiomer crystallizes onto the chiral surfaces with relative high enantiomeric excess. In addition, crystallization of pure histidine enantiomers onto chiral films results in strong crystal morphology modification with preferred orientation.
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286
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Oaki Y, Imai H. Stereospecific morphogenesis of aspartic acid helical crystals through molecular recognition. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:5466-70. [PMID: 17432886 DOI: 10.1021/la063663o] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Helical morphologies were generated from aspartic acid (Asp) crystals in agar gel matrix. The morphogenesis stereospecifically proceeded in the helical crystal growth: D- and L-Asp provided left- and right-handed structures, respectively. The backbone of the helical morphology was twisted twins of tilted unit crystals, as was the case with inorganic helical crystals. The molecular recognition between the Asp crystals and agar matrix molecules resulted in the stereospecific morphogenesis. The chirality in Asp and agar molecules, the enantiomorph of unit crystals, and the resultant macroscopic helix were exquisitely associated with each other.
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Affiliation(s)
- Yuya Oaki
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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287
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Asthagiri A, Hazen RM. Anab initiostudy of adsorption of alanine on the chiral calcite surface. MOLECULAR SIMULATION 2007. [DOI: 10.1080/08927020601155485] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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288
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Schillinger R, Sljivancanin Z, Hammer B, Greber T. Probing enantioselectivity with x-ray photoelectron spectroscopy and density functional theory. PHYSICAL REVIEW LETTERS 2007; 98:136102. [PMID: 17501218 DOI: 10.1103/physrevlett.98.136102] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2006] [Indexed: 05/15/2023]
Abstract
The enantioselectivity of gold is investigated by x-ray photoelectron spectroscopy (XPS) and density functional theory (DFT). Cysteine molecules on a chiral Au(17 11 9);{S} surface show enantiospecific core level binding energies in the amino and in the thiol group. The sign and order of magnitude of the XPS core level shifts is reproduced by DFT. Identical preparations of D- and L-cysteine layers lead to D-cysteine molecules in the pure NH2 form, while a small portion of L-cysteine molecules maintains a hydrogen rich amino group (NH3). This implies enantiospecific adsorption reaction pathways and is consistent with DFT that indicates an activated hydrogen abstraction reaction from the amino group, which is downhill for D-cysteine.
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Affiliation(s)
- R Schillinger
- Physik Institut Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
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289
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Sun T, Han D, Riehemann K, Rhemann K, Chi L, Fuchs H. Stereospecific Interaction between Immune Cells and Chiral Surfaces. J Am Chem Soc 2007; 129:1496-7. [PMID: 17283984 DOI: 10.1021/ja0686155] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Taolei Sun
- Physicalisches Institut, Muenster University, D-48149 Muenster, Germany.
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290
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Deamer DW, Dick R, Thiemann W, Shinitzky M. Intrinsic asymmetries of amino acid enantiomers and their peptides: A possible role in the origin of biochirality. Chirality 2007; 19:751-63. [PMID: 17597118 DOI: 10.1002/chir.20434] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
L-amino acids and D-carbohydrates were incorporated into the first forms of life over 3.5 billion years ago, presumably from racemic mixtures of organic solutes produced by abiotic synthetic pathways. The process by which this choice occurred has not been established, but a consensus view is that it was a chance event, such that life could equally well have used D-amino acids and L sugars. In this review we will explore a second, less plausible alternative that minute differences in the physical properties of certain enantiomers made it more likely that L-amino acids and D-carbohydrates would be incorporated into early life. By all classical criteria, chiral isomers are perfect mirror image structures and, therefore, are expected to be identical in their macroscopic properties. However, scattered reports in the literature suggest that there may be slight differences in the physical properties of L- and D-amino acids and their polymers, which could lead to a preferred incorporation of L-amino acids into primitive forms of life. Here we present a literature survey of this issue and discuss its possible role in the origin of biochirality.
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Affiliation(s)
- David W Deamer
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA.
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291
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Dressler DH, Landau A, Zaban A, Mastai Y. Sub-micrometer polarimetry of chiral surfaces using near-field scanning optical microscopy. Chem Commun (Camb) 2007:945-7. [PMID: 17311129 DOI: 10.1039/b617139g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work we have studied the optical activity of chiral crystal surfaces with polarized near-field scanning optical microscopy (NSOM); our studies clearly demonstrated that polarized NSOM can be utilized to determine chirality at crystal surfaces.
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Affiliation(s)
- David H Dressler
- Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel
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292
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Dressler DH, Mastai Y. Chiral crystallization of glutamic acid on self assembled films of cysteine. Chirality 2007; 19:358-65. [PMID: 17354265 DOI: 10.1002/chir.20389] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
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.
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293
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Abstract
Although there have been attempts at a definition of life from many disciplines, none is accepted by all as definitive. Some people believe that it is impossible to define 'life' adequately at the moment. We agree with this point of view on linguistic grounds, examining the different types of definition, the contexts in which they are used and their relative usefulness as aids to arriving at a scientific definition of life. We look at some of the more recent definitions and analyse them in the light of our criteria for a good definition. We argue that since there are so many linguistic and philosophical difficulties with such a definition of life, what is needed is a series of working descriptions, which are suited to the audience and context in which they are used and useful for the intended purpose. We provide some ideas and examples of the forms these may take.
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Affiliation(s)
- Joan D Oliver
- Planetary Science Institute, Seattle, WA 98115, USA.
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294
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Imai H, Oaki Y, Kotachi A. A Biomimetic Approach for Hierarchically Structured Inorganic Crystals through Self-Organization. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2006. [DOI: 10.1246/bcsj.79.1834] [Citation(s) in RCA: 125] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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295
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Affiliation(s)
- Yuya Oaki
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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296
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Rankin RB, Sholl DS. Structures of dense glycine and alanine adlayers on chiral Cu(3,1,17) surfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:8096-103. [PMID: 16952247 DOI: 10.1021/la0613272] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Density Functional Theory calculations have been used to predict the structures of dense glycine and alanine adlayers on Cu(3,1,17)(S). Facets of this chiral Cu surface result from adsorbate-induced surface reconstruction when glycine or alanine are adsorbed and annealed on Cu(100). We have calculated the surface energy changes associated with this surface reconstruction. Our results allow the enantiospecificity of this reconstruction following adsorption of enantiopure or racemic alanine on Cu(100) to be discussed. The overall stability of glycine and alanine adlayers on Cu(3,1,17)(S) arises from an interplay between the formation of chemical bonds with the Cu surface, deformations in the adsorbed molecules during adsorption, and intermolecular hydrogen bonds within the adlayer; none of these factors individually dominates.
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Affiliation(s)
- Rees B Rankin
- Department of Chemical Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
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297
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Pasteris JD, Freeman JJ, Wopenka B, Qi K, Ma Q, Wooley KL. With a grain of salt: what halite has to offer to discussions on the origin of life. ASTROBIOLOGY 2006; 6:625-43. [PMID: 16916287 DOI: 10.1089/ast.2006.6.625] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
This experimental study investigated how the dynamics of the crystallization of the evaporite mineral halite could affect the accumulation and preservation of organic macromolecules present in the crystallizing solution. Halite was grown under controlled conditions in the presence of polymer nanoparticles that acted as an analog to protocellular material. Optical microscopy, atomic force microscopy, and laser scanning confocal fluorescence microscopy were used to trace the localization of the nanoparticles during and after growth of halite crystals. The present study revealed that the organic nanoparticles were not regularly incorporated within the halite, but were very concentrated on its surfaces. Their distribution was controlled dominantly by the morphologic surface features of the mineral rather than by specific molecular interactions with an atomic plane of the mineral. This means that the distribution of organic molecules was controlled by surfaces like those of halite's evaporitic growth forms. The experiments with halite also demonstrated that a mineral need not continuously incorporate organic molecules during its crystallization to preserve those molecules: After rejection by (non-incorporation into) the crystallizing halite, the organic nanoparticles increased in concentration in the evaporating brine. They ultimately either adsorbed in rectilinear patterns onto the hopper-enhanced surfaces and along discontinuities within the crystals, or they were encapsulated within fluid inclusions. Of additional importance in origin-of-life considerations is the fact that halite in the natural environment rapidly can change its role from that of a protective repository (in the absence of water) to that of a source of organic particles (as soon as water is present) when the mineral dissolves.
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Affiliation(s)
- Jill D Pasteris
- Department of Earth and Planetary Sciences, Center for Materials Innovation, Washington University in St. Louis, St. Louis, Missouri 63130, USA.
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298
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Lee I, Zaera F. Chiral Templating of Surfaces: Adsorption of (S)-2-Methylbutanoic Acid on Pt(111) Single-Crystal Surfaces. J Am Chem Soc 2006; 128:8890-8. [PMID: 16819884 DOI: 10.1021/ja061654w] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The adsorption and thermal chemistry of (S)-(+)-2-methylbutanoic acid ((S)-2MBA) on Pt(111) single-crystal surfaces was characterized by using temperature programmed desorption (TPD) and reflection-adsorption infrared (RAIRS) spectroscopies. Particular emphasis was placed on the characterization of the chiral superstructures formed upon the deposition of the submonolayer coverages of enantiopure (S)-2-methylbutanoate species that are produced by thermal dehydrogenation of the (S)-2MBA. The enantioselectivity of the empty platinum sites left open on those structures were identified by their difference in behavior toward the adsorption of the two enantiomers of propylene oxide. It was found that a significant enhancement in adsorption is possible on surfaces with the same chirality of the probe molecule, specifically that the uptake of (S)-propylene oxide is larger than that of (R)-propylene oxide on (S)-2-methylbutanoate adsorbed layers. This contrasts with the lack of enantioselectivity previously reported for the same adsorbate on Pd(111). Detectable differences in adsorption energetics of (R)- vs (S)-propylene oxide on the (S)-2-methylbutanoate/Pt(111) overlayers were measured but deemed not to be the controlling factor in the enantioselectivity reported in this system.
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Affiliation(s)
- Ilkeun Lee
- Department of Chemistry, University of California, Riverside, California 92521, USA
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299
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Kühnle A, Linderoth TR, Besenbacher F. Enantiospecific adsorption of cysteine at chiral kink sites on Au(110)-(1 x 2). J Am Chem Soc 2006; 128:1076-7. [PMID: 16433514 DOI: 10.1021/ja0568751] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Enantiospecific adsorption of cysteine molecules onto chiral kink sites on the Au(110)-(1x2) surface was observed by scanning tunneling microscopy. l- and d-cysteine dimers were found to adopt distinctly different adsorption geometries at S kinks, which can be understood from the need to reach specific, optimum molecule-substrate interaction points. Extended, homochiral domains of l/d-cysteine were furthermore observed to grow preferentially from R/S kinks. The results constitute the first direct, microscopic observation of enantiospecific molecular interaction with chiral sites on a metal single-crystal surface.
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Affiliation(s)
- Angelika Kühnle
- Interdisciplinary Nanoscience Center (iNANO), and Department of Physics and Astronomy, University of Aarhus, Denmark
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300
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