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Volumn 60, Issue 44, 2004, Pages 10029-10038

Double versus single helical structures of oligopyridine-dicarboxamide strands. Part 1: Effect of oligomer length

Author keywords

Helical structures; Molecular recognition; Pi interactions; Self assembly

Indexed keywords

AMIDE; BENZYL DERIVATIVE; CARBAMIC ACID DERIVATIVE; DICARBOXYLIC ACID; MONOMER; OLIGOMER; PYRIDINE;

EID: 4644313993     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.tet.2004.07.078     Document Type: Article
Times cited : (61)

References (43)
  • 6
    • 0024281641 scopus 로고
    • D.A. Langs Science 241 1988 188 191
    • (1988) Science , vol.241 , pp. 188-191
    • Langs, D.A.1
  • 24
    • 0035498334 scopus 로고    scopus 로고
    • For reviews on helicates: M. Albrecht Chem. Rev. 101 2001 3457 3498
    • (2001) Chem. Rev. , vol.101 , pp. 3457-3498
    • Albrecht, M.1
  • 40
    • 4644252657 scopus 로고    scopus 로고
    • note
    • Final products were purified by chromatography at least three times on TLC or radial chromatography prior to NMR studies. The impurities can be characterized as such and not as being other conformations/aggregates of the oligomers because: (i) TLC reveals their presence; (ii) the line shape of their signals remains sharp at any temperature even when the rest of the spectrum broadens due to coalescence phenomena; (iii) when the concentration is varied, the proportions of single and double helices varies but the quantity of 'impurity' is proportional to neither of them: it remains proportional to the total concentration of single and double helices.
  • 41
    • 4644299877 scopus 로고    scopus 로고
    • note
    • The surface involved in π-π stacking in a double helical dimer is similar to that involved in two stacked single helical monomers. It differs from the surface involved in π-π stacking in two dissociated monomers by twice the cross-section of the helix.
  • 42
    • 4644288607 scopus 로고    scopus 로고
    • note
    • Crystal structures show that pyridine rings are sandwiched between amide functions in the single helices, whereas they are sandwiched between other pyridine rings in the double helices, see Ref. 19.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.