物理化学学报 >> 1991, Vol. 7 >> Issue (03): 349-353.doi: 10.3866/PKU.WHXB19910318
韩明勇; 刘旺; 王德军; 肖良质; 李铁津
Han Ming-Yong; Liu Wang; Wang De-Jun; Xiao Liang-Zhi; Li Tie-Jin
Abstract: The influence of surface-adsorbed NO_2 on the surface photovoltaic properties of MnPc and the related charge transfer interaction were studied by surface photovoltage spectroscopy. In comparison with other metal-phthalocyanines, the photovoltaic response of MnPc is very particular. A strong photovoltaic response band near 510 nm was observed besides B band (365 nm) and Q bands (640, 725 nm), which was assigned as the MLCT transition from the e_g(d_(xz), d_(yz)) orbital of central manganese ion to the b_(lu)(π~*) orbital of Pc ring. Under given conditions, the MnPc exhibited reverse photovoltaic response after adsorbing NO_2 and, consequently, the spectral distribution changed remarkably, which suggests that there is a strong charge transfer interaction between them. The photodesorption experiments indicated that NO_2 was adsorbed by the atomic oxygen bridged dimer of MnPc prior to the MnPc monomer and made the dimer partly decomposed. Besides, there is a selective interaction between NO_2 and MnPc with respect to the various electron transitions of MnPc.
Surface photovoltaic properties
韩明勇;刘旺;王德军;肖良质;李铁津. 酞菁锰与表面吸附的NO2之间的电荷转移相互作用研究[J]. 物理化学学报, 1991, 7(03): 349-353.
Han Ming-Yong; Liu Wang; Wang De-Jun; Xiao Liang-Zhi; Li Tie-Jin. A Sutdy of Charge Transfer Interaction Between MnPc and Surface-Adsorbed NO2[J]. Acta Phys. -Chim. Sin., 1991, 7(03): 349-353.
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