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Volumn 118, Issue 15, 1996, Pages 3767-3768

Aggregation of conjugated helical molecules

Author keywords

[No Author keywords available]

Indexed keywords

POLYCYCLIC AROMATIC HYDROCARBON;

EID: 0029904378     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja960145z     Document Type: Article
Times cited : (148)

References (62)
  • 1
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    • and references therein
    • (a) Chandrasekhar, S. Liq. Cryst. 1993, 14, 3 and references therein.
    • (1993) Liq. Cryst. , vol.14 , pp. 3
    • Chandrasekhar, S.1
  • 15
    • 15844380672 scopus 로고
    • Clark, R. J. H., Hester, R. E., Eds.; Wiley: New York, Chapter 3
    • (c) Cook, M. J. In Spectroscopy of New Materials, Clark, R. J. H., Hester, R. E., Eds.; Wiley: New York, 1993; Chapter 3.
    • (1993) Spectroscopy of New Materials
    • Cook, M.J.1
  • 23
    • 15844421666 scopus 로고    scopus 로고
    • note
    • On concentration, the fluorescence emission maximum shifts from 415 to 472 nm.
  • 25
    • 0029647469 scopus 로고
    • Pasternack, R. F.; Collings, P. J. Science 1995, 269, 935. We thank Prof. Collings for the preliminary result, whose details will be published separately.
    • (1995) Science , vol.269 , pp. 935
    • Pasternack, R.F.1    Collings, P.J.2
  • 26
    • 15844419089 scopus 로고    scopus 로고
    • note
    • Solutions of numerous amphiphiles and a few other molecules form fibers comprised of solute and solvent, but we could find no reports of fibers, like those pictured, that form in the absence of solvents.
  • 27
    • 12044259093 scopus 로고
    • Examples are in the following and in the references cited therein, (a) Fuhrhop, J.-H.; Helfrich, W. Chem. Rev. 1993, 93, 1565.
    • (1993) Chem. Rev. , vol.93 , pp. 1565
    • Fuhrhop, J.-H.1    Helfrich, W.2
  • 33
    • 42149112490 scopus 로고
    • (g) Jelley, E. E. Nature 1937, 139, 631.
    • (1937) Nature , vol.139 , pp. 631
    • Jelley, E.E.1
  • 34
    • 15844398703 scopus 로고    scopus 로고
    • note
    • No other phase transitions between 25 and 200°C were found by polarization microscopy or between 0 and 210°C by DSC (scanned for two cycles at 10 deg/min), the latter implying that if any occur, they involve either little change in enthalpy or are slow. We thank Prof. Timothy Swager for the experiment.
  • 35
    • 15844403899 scopus 로고    scopus 로고
    • note
    • Estimated by Dr. N. D. Willmore, Harvard University.
  • 36
    • 15844399448 scopus 로고    scopus 로고
    • note
    • The solutions when sandwiched between crossed polarizers transmit no light. Their specific rotation is unchanged by a 90° turn of the cell.
  • 37
    • 15844422737 scopus 로고    scopus 로고
    • note
    • 4 in the concentrated one.
  • 40
    • 75449145408 scopus 로고
    • and references therein
    • Kasha, M. Radiation Res. 1963, 20, 55 and references therein.
    • (1963) Radiation Res. , vol.20 , pp. 55
    • Kasha, M.1
  • 41
    • 15844413457 scopus 로고    scopus 로고
    • note
    • Splitting is observed when, as in refs 4 (for amphotericin also see ref 18) and 19, the vectors are not parallel. It is not observed in J-aggregates (see refs 5b,d and 20)
  • 48
    • 15844431061 scopus 로고    scopus 로고
    • note
    • 26.
  • 54
    • 36849126670 scopus 로고
    • Another possibility is that the intermolecular electronic coupling is comparable to or smaller than the intramolecular vibronic coupling (Simpson, W. T.; Peterson, D. L. J. Chem. Phys. 1957, 26, 588).
    • (1957) J. Chem. Phys. , vol.26 , pp. 588
    • Simpson, W.T.1    Peterson, D.L.2
  • 55
    • 15844403517 scopus 로고    scopus 로고
    • note
    • 2 area.
  • 56
    • 15844387819 scopus 로고    scopus 로고
    • note
    • Calculated assuming the density to be 0.85 g/mL.
  • 57
    • 15844372009 scopus 로고    scopus 로고
    • note
    • The figures for 8 are reproducible and unchanged when samples are sheared in different directions. Prof. Collings found that at 633 nm, samples of 8 exhibit specific rotations as high as 2000 deg/mm. We thank him for the information.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.