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Volumn 18, Issue 6, 2008, Pages 915-921

Oligophenylenevinylenes in Spatially Confined Nanochannels: Monitoring Intermolecular Interactions by UV/Vis and Raman Spectroscopy

Author keywords

[No Author keywords available]

Indexed keywords

OLIGOMERS; QUANTUM YIELD; RAMAN SPECTROSCOPY; ULTRAVIOLET SPECTROSCOPY;

EID: 41549149074     PISSN: 1616301X     EISSN: 16163028     Source Type: Journal    
DOI: 10.1002/adfm.200700647     Document Type: Article
Times cited : (23)

References (38)
  • 16
    • 41549115320 scopus 로고    scopus 로고
    • 3 for hexadecane respectively, at λ= 400 nm. Moreover, the anisotropy of α is rather small in both materials.
    • 3 for hexadecane respectively, at λ= 400 nm. Moreover, the anisotropy of α is rather small in both materials.
  • 18
    • 15744378746 scopus 로고    scopus 로고
    • Eds: H. Nalwa, American Scientific Publish-ers, and literature cited therein
    • J. Gierschner, D. Oelkrug, in: Encyclopedia of Nanoscience and Nanotechnology, Vol. 8 Eds: H. Nalwa), American Scientific Publish-ers, 2004, p. 219. and literature cited therein.
    • (2004) Encyclopedia of Nanoscience and Nanotechnology , vol.8 , pp. 219
    • Gierschner, J.1    Oelkrug, D.2
  • 29
    • 41549158550 scopus 로고    scopus 로고
    • Pressure-dependent studies on oligophenylene crystals (see ref, 22, correlate changes in Raman intensities to different dihedral angles. However, this is not the mechanism operative here, as revealed by DFT B3LYP/6-311G* quantum-chemical calculations. Changing the geometry of trans-stilbene from a planar structure (C2h symmetry) to a non-planar structure with C2 symmetry and dihedral angles of 20° for both phenyl rings with respect to the vinylene unit, leads to a decrease in intensity for both the ν1 and ν4 modes. The intensity ratio I1/I4 increases by only 16, upon distorting the planar geometry. Thus, deviation from planarity cannot be the major contribution to the differences between the Raman spectra. Moreover, temperaturedependent studies, which should be sensitive to the conformation of the molecules, did not show any changes in the I1/I4 ratio
    • 4 ratio.
  • 35
    • 41549113671 scopus 로고    scopus 로고
    • R. Ahlrichs, M. Bär, H.-P Baron, et al. TURBOMOLE, version 5.7.1; Universität Karlsruhe: Karlsruhe, 2003
    • R. Ahlrichs, M. Bär, H.-P Baron, et al. TURBOMOLE, version 5.7.1; Universität Karlsruhe: Karlsruhe, 2003.
  • 37
    • 41549129783 scopus 로고    scopus 로고
    • For the TURBOMOLE calculations, basis sets were obtained from the Extensible Computational Chemistry Environment Basis Set Database, Version 02/25/04, as developed and distributed by the Molecular Science Computing Facility, Environmental and Molecular Sciences Laboratory which is part of the Pacific Northwest Laboratory, P.O. Box 999, Richland, Washington 99352, USA, and funded by the U.S. Department of Energy. The Pacific Northwest Laboratory is a multiprogram laboratory operated by Battelle Memorial Institute for the U.S. Department of Energy under contract DE-AC06-76RLO 1830. Contact Karen Schuchardt for further information.
    • For the TURBOMOLE calculations, basis sets were obtained from the Extensible Computational Chemistry Environment Basis Set Database, Version 02/25/04, as developed and distributed by the Molecular Science Computing Facility, Environmental and Molecular Sciences Laboratory which is part of the Pacific Northwest Laboratory, P.O. Box 999, Richland, Washington 99352, USA, and funded by the U.S. Department of Energy. The Pacific Northwest Laboratory is a multiprogram laboratory operated by Battelle Memorial Institute for the U.S. Department of Energy under contract DE-AC06-76RLO 1830. Contact Karen Schuchardt for further information.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.