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    Title: Pressure Effect to the Molecular Structure of Ladder-type Poly(Para-phenylene) Revealed by Raman Spectroscopy
    Keywords: Raman Scattering Spectrum;Hydrostatic Pressure;Conjugated Polymer;Electron-phonon Interaction
    Date: 2015-06
    Issue Date: 2016-04-22 13:47:35 (UTC+8)
    Abstract: Raman scattering spectra of blue light-emitted organic conjugated polymer, ladder-type poly
    para-phenylene with a phenyl ring in the side chain (Ph-LPPP), in the form of powder with
    trace-concentrations of metallic impurities under various pressures are measured. We find that Raman
    spectra shift to higher frequency with the increase of pressure, indicating a strong electron-phonon
    interaction. We also find that the shift rates of Raman peaks from the backbone of Ph-LPPP are
    different comparing to our early observations of Raman spectra of methyl substituted ladder-type poly
    (Me-LPPP). Planarization under pressure, therefore, electronic delocalization is observed, which is
    also discovered from the optical properties of Ph-LPPP.
    Relation: Journal of Applied Science and Engineering 18(2), pp.153-158
    DOI: 10.6180/jase.2015.18.2.07
    Appears in Collections:[物理學系暨研究所] 期刊論文

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