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题名: SYSTEMATIC STUDY OF THE VIBRATIONAL PROPERTIES OF POLY(PHENYLENE VINYLENE) AND RELATED OLIGOMERS
作者: WANG, WZ ;  SAXENA, A ;  BISHOP, AR
刊名: PHYSICAL REVIEW B
出版日期: 1994
卷号: 50, 期号:9, 页码:6068-6076
关键词: DETECTED MAGNETIC-RESONANCE ;  TRANS-STILBENE ;  POLY(PARA-PHENYLENE VINYLENE) ;  POLYPARAPHENYLENE-VINYLENE ;  CONJUGATED POLYMERS ;  OPTICAL-PROPERTIES ;  CRYSTAL-STRUCTURE ;  POLYACETYLENE ;  SPECTRA ;  POLY(PARAPHENYLENEVINYLENE)
学科分类: Physics
通讯作者: WANG, WZ , LOS ALAMOS NATL LAB,DIV THEORET,LOS ALAMOS,NM 87545, USA.
部门归属: CHINESE ACAD SCI,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
英文摘要: Within a two-dimensional Su-Schrieffer-Heeger-like Hamiltonian, the electronic and vibrational properties of poly(phenylene vinylene) (PPV) and its model oligomers are investigated systematically. The stable geometric and electronic configurations of this PPV series are determined within the Bogoliubov-de Gennes formalism, with good agreement with the observed variation of the electronic gap with chain length, and the observed spatial extent of the nonlinear excitations (polarons, bipolarons, etc.). The dynamics of lattice relaxation subsequent to electron doping is also analyzed, and suggests relatively weak e-ph coupling in this system. The two-dimensional vibrational spectra of the PPV series have been obtained in the random-phase and frozen-phonon approximations, and certain doping-induced localized modes are identified to be either ir or Raman active. The ir, Raman, and resonant Raman spectra of the pristine and charged PPV series are calculated and compared carefully with corresponding experiments, with overall good agreement.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/11861
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
WANG, WZ,SAXENA, A,BISHOP, AR. SYSTEMATIC STUDY OF THE VIBRATIONAL PROPERTIES OF POLY(PHENYLENE VINYLENE) AND RELATED OLIGOMERS[J]. PHYSICAL REVIEW B,1994,50(9):6068-6076.
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