An oligo-phenylenevinylene (OPV) derivative [4,4â²-(1,4-phenylenedivinylene)bis(N-methylpyridinium
 iodide)]
 (OPVD) has been introduced to silica film by
 a solâgel process. The X-ray diffraction pattern shows that the crystallization
 of OPVD can be eliminated in the composite film. Fluorescence spectral results
 show that the luminescent peak of the OPVD in the composite film undergoes
 a blue shift at about 80 nm and its emission intensity is enhanced
 compared with that of OPVD in the solid state. Surface photovoltage spectroscopy (SPS),
 and electric field induced surface photovoltage spectroscopy (EFISPS)
 are used to investigate the electron process in the OPVDâSiO2
 heterostructured composite film. The results indicated that silica acted as
 an electric-passivation layer of OPVD, which can explain the strong blue-shifted
 emission of OPVD in the composite film.
                                    一种寡亚
苯乙烯(OPV)衍
生物[4,4²-(1,4-
苯乙烯二
乙烯)双(N-
甲基吡啶鎓
碘化物)](OPVD)通过溶胶-凝胶法引入
二氧化硅膜中。X射线衍射图谱显示,复合膜中OPVD的结晶可以消除。荧光光谱结果显示,复合膜中OPVD的发光峰在约80 nm处发生蓝移,其发射强度比固态OPVD增强。表面光电压光谱(
SPS)和电场诱导表面光电压光谱(EFI
SPS)用于研究OPVD-SiO2异质结构复合