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Volumn 16, Issue 25, 2000, Pages 9887-9894

Chiral polymorphism: a scanning tunneling microscopy study

Author keywords

[No Author keywords available]

Indexed keywords

CARBOXYLIC ACIDS; CONFORMATIONS; CRYSTAL STRUCTURE; GRAPHITE; INTERFACES (MATERIALS); MOLECULAR STRUCTURE; SCANNING TUNNELING MICROSCOPY; SOLUTIONS; SUBSTRATES;

EID: 0346552806     PISSN: 07437463     EISSN: None     Source Type: Journal    
DOI: 10.1021/la000693x     Document Type: Article
Times cited : (21)

References (56)
  • 52
    • 0342589106 scopus 로고    scopus 로고
    • note
    • These error values reflect the uncertainty in the determination of the direction of the lamella axis and the graphite reference axis and also take into account uncertainties caused by possible image distortions.
  • 54
    • 0343894697 scopus 로고    scopus 로고
    • note
    • 2 axis in the plane of the substrate. Although this symmetry operation leads to enantiomorphous unit cells, the monolayer structures are not enantiomorphous (Figure 1C). For instance, in one case the methyl group on the stereogenic center would be directed toward the supernatant solution whereas after the 2-fold rotation, this methyl group would be directed to the graphite substrate, resulting in different interaction energies.
  • 56
    • 0342589099 scopus 로고    scopus 로고
    • note
    • For the MM+ calculations, one S-enantiomer molecule has been modeled on a sufficiently large piece of graphite. Several initial start conformations were sampled. The molecular structure corresponding to the lowest energy conformation was used as the building unit to construct the molecular model given in Figure 3D. The eicosyloxy group was oriented parallel to the main graphite axes. The calculations predict a small clockwise rotation of the 2-octyloxy group with respect to the eicosyloxy chain of 6°. No intermolecular interactions were considered in the calculation.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.