Pressure Effect to the Molecular Structure of Ladder-type Poly(Para-phenylene) Revealed by Raman Spectroscopy

淡江大學機構典藏 > 理學院 > 物理學系暨研究所 > 期刊論文 > Item 987654321/106365

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题名:	Pressure Effect to the Molecular Structure of Ladder-type Poly(Para-phenylene) Revealed by Raman Spectroscopy
关键词:	Raman Scattering Spectrum;Hydrostatic Pressure;Conjugated Polymer;Electron-phonon Interaction
日期:	2015-06
上传时间:	2016-04-22 13:47:35 (UTC+8)
摘要:	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.
關聯:	Journal of Applied Science and Engineering 18(2), pp.153-158
DOI:	10.6180/jase.2015.18.2.07
显示于类别:	[物理學系暨研究所] 期刊論文

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