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Volumn 15, Issue 28, 2009, Pages 6794-6798

Double helices with a controlled helicity composed of biphenol-derived phosphoric acid diesters

Author keywords

Chiral amplification; Chirality; Helical structures; Self assembly; Supramolecular chemistry

Indexed keywords

AROMATIC RINGS; BIPHENOL; BIPHENYL DERIVATIVES; CARBOXYLATE SALTS; CHIRAL AMPLIFICATION; DIESTERS; DOUBLE HELIX; DOUBLE-HELICAL; HELICAL SENSE; HELICAL STRUCTURES; HELICITY; INDUCED CIRCULAR DICHROISM; MODULAR STRATEGY; OPTICALLY ACTIVE; PHOSPHORYL CHLORIDE;

EID: 67650446865     PISSN: 09476539     EISSN: 15213765     Source Type: Journal    
DOI: 10.1002/chem.200901075     Document Type: Article
Times cited : (23)

References (46)
  • 2
    • 0003699562 scopus 로고
    • For reviews and selected examples of artificial double helices including helicates, see: a, VCH, Weinheim
    • For reviews and selected examples of artificial double helices including helicates, see: a)J.-M. Lehn, Supramolecular Chemistry, VCH, Weinheim, 1995
    • (1995) Supramolecular Chemistry
    • Lehn, J.-M.1
  • 4
    • 0035498334 scopus 로고    scopus 로고
    • c) M. Albrecht, Chem. Rev. 2001, 101, 3457-3497
    • (2001) Chem. Rev , vol.101 , pp. 3457-3497
    • Albrecht, M.1
  • 9
    • 21244483615 scopus 로고    scopus 로고
    • Angew. Chem. Int. Ed. 2005, 44, 3867-3870
    • (2005) Angew. Chem. Int. Ed , vol.44 , pp. 3867-3870
  • 14
    • 34547800774 scopus 로고    scopus 로고
    • Angew. Chem. Int. Ed. 2007, 46, 5885-5888
    • (2007) Angew. Chem. Int. Ed , vol.46 , pp. 5885-5888
  • 19
    • 0033517692 scopus 로고    scopus 로고
    • Angew. Chem. Int. Ed. 1999, 38, 3138-3154
    • (1999) Angew. Chem. Int. Ed , vol.38 , pp. 3138-3154
  • 39
    • 2342570203 scopus 로고    scopus 로고
    • Angew. Chem. Int. Ed. 2004, 43, 1566-1568
    • (2004) Angew. Chem. Int. Ed , vol.43 , pp. 1566-1568
  • 41
    • 67650472905 scopus 로고    scopus 로고
    • See the Supporting Information for details of the synthesis, structures, and characterization of compounds
    • See the Supporting Information for details of the synthesis, structures, and characterization of compounds.
  • 43
    • 67650459229 scopus 로고    scopus 로고
    • 2, an intense split-type ICD was also observed at around 250 nm probably due to the absorption of the biphenol moieties. However, the addition of ethanol resulted in the disappearance of the ICD in the absorption region of the biphenol moieties as well as the π-conjugated chromophore region (see Figure S2 in the Supporting Information). These results indicate that a preferred-handed axially twisted conformation was also induced in the biphenol moieties upon the formation of a homo-double helix with an excess handedness.
    • 2, an intense split-type ICD was also observed at around 250 nm probably due to the absorption of the biphenol moieties. However, the addition of ethanol resulted in the disappearance of the ICD in the absorption region of the biphenol moieties as well as the π-conjugated chromophore region (see Figure S2 in the Supporting Information). These results indicate that a preferred-handed axially twisted conformation was also induced in the biphenol moieties upon the formation of a homo-double helix with an excess handedness.
  • 44
    • 67650484384 scopus 로고    scopus 로고
    • 1H NMR spectra of (S)-I as a function of the temperature; that is, formation of a small aggregate for (S)-I rather than a specific duplex at high temperature, and this possibility could not be completely excluded, although the MS data support the duplex formation.
    • 1H NMR spectra of (S)-I as a function of the temperature; that is, formation of a small aggregate for (S)-I rather than a specific duplex at high temperature, and this possibility could not be completely excluded, although the MS data support the duplex formation.
  • 45
    • 67650447099 scopus 로고    scopus 로고
    • From the diffusion-ordered 1HNMR spectroscopy (DOSY) measurements for (S)-1 and 2 in CD2Cl 2 in the presence of the monomeric (S)-11 (see Scheme S1 in the Supporting Information) as the internal standard, the diffusion constants of (S)-1 and 2 were determined to be D≈4.0xl0-10m2s-1; these values were smaller than that of (S)-11 (D≈ 6.0x10-10m2S -1, see Figure S21 and S22 in the Supporting Information, These results indicate that (S)-1 and 2 form a similar aggregate, probably a dimer with an almost identical molecular weight in CH 2Cl2, although their absorption and NMR spectral patterns differ
    • 2, although their absorption and NMR spectral patterns differ.
  • 46
    • 67650499682 scopus 로고    scopus 로고
    • 6 (see Figure S24 in the Supporting Information). 6799-6801
    • 6 (see Figure S24 in the Supporting Information). 6799-6801


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.