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Journal of Materials Chemistry
Volumn 17, Issue 32, 2007, Pages 3419-3426
Polar and chiral mesophases formed by m-terphenyl derived bent-core molecules with lateral F-substituents
Author keywords

[No Author keywords available]
Indexed keywords

SMECTIC LIQUID CRYSTALS; SUBSTITUTION REACTIONS; SYNTHESIS (CHEMICAL); X RAY DIFFRACTION ANALYSIS;
EID: 34547762226     PISSN: 09599428     EISSN: 13645501     Source Type: Journal    
DOI: 10.1039/b705499h     Document Type: Article
Times cited : (18)
References (106)
  • 1
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    • D. Demus, J. Goodby, G. W. Gray, H.-W. Spiess and V. Vill, Wiley-VCH, Weinheim
    • Handbook of Liquid Crystals, ed., D. Demus, J. Goodby, G. W. Gray, H.-W. Spiess, and, V. Vill, Wiley-VCH, Weinheim, 1998
    • (1998) Handbook of Liquid Crystals, Ed.
  • 8
    • 0004091130 scopus 로고    scopus 로고
    • H.-S. Kitzerow and C. Bahr, Springer-Verlag, New York
    • Chirality in Liquid Crystals, ed., H.-S. Kitzerow, and, C. Bahr, Springer-Verlag, New York, 2001
    • (2001) Chirality in Liquid Crystals, Ed.
  • 52
    • 33748854652 scopus 로고    scopus 로고
    • F-substituted resorcinolbenzoates and acylated 3-aminophenols:
    • K. Maeda1 E. Yashima Top. Curr. Chem. 2006 265 47
    • (2006) Top. Curr. Chem. , vol.265 , pp. 47
    • Maeda, K.1    Yashima, E.2
  • 90
    • 34547737386 scopus 로고    scopus 로고
    • This value is obtained from an average lateral distance between the molecules of 0.45 nm assuming a stacking in the bend direction of the molecules with a bend angle of 120°
    • This value is obtained from an average lateral distance between the molecules of 0.45 nm assuming a stacking in the bend direction of the molecules with a bend angle of 120°
  • 100
    • 34547751312 scopus 로고    scopus 로고
    • The molecular length measured with CPK models (space filling molecular models according to Corey, Pauling and Koltum) assuming a V-shaped conformation with an opening angle of 120° and alkyl chains in the all-trans conformation is L = 6.2 nm. The difference to the effective molecular length results from chain-melting and partial intercalation of the alkyl chains of adjacent layers
    • The molecular length measured with CPK models (space filling molecular models according to Corey, Pauling and Koltum) assuming a V-shaped conformation with an opening angle of 120° and alkyl chains in the all-trans conformation is L = 6.2 nm. The difference to the effective molecular length results from chain-melting and partial intercalation of the alkyl chains of adjacent layers
  • 101
    • 34547740017 scopus 로고    scopus 로고
    • In this case, in principle there could be diastereomeric relations between helix sense, layer chirality and molecular conformational chirality, which contribute to the transfer of chirality
    • In this case, in principle there could be diastereomeric relations between helix sense, layer chirality and molecular conformational chirality, which contribute to the transfer of chirality
  • 106
    • 34547733940 scopus 로고    scopus 로고
    • Indexing is not unique, from the X-ray results alone. There is, for instance, a very plausible oblique interpretation with a = 9.2 nm, b = 5.37 nm, and γ = 100°, which would also give an undulated layer structure, but with tilted molecules. Since the texture observed by polarizing microscopy suggests a non-tilted or anticlinic tilted arrangement of the molecules, and because a non-tilted or anticlinic tilted organization in an oblique lattice is unlikely, we prefer the rectangular version with non-tilted molecules
    • Indexing is not unique, from the X-ray results alone. There is, for instance, a very plausible oblique interpretation with a = 9.2 nm, b = 5.37 nm, and γ = 100°, which would also give an undulated layer structure, but with tilted molecules. Since the texture observed by polarizing microscopy suggests a non-tilted or anticlinic tilted arrangement of the molecules, and because a non-tilted or anticlinic tilted organization in an oblique lattice is unlikely, we prefer the rectangular version with non-tilted molecules

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