(JP7149910-A)      A polycyclic or biphenyl aromatic gp-pendant polysilane of formula (I) is new.    ((R1R2Si)k(R3R4Si)m)n (I)    R1, R2, R3 and R4 = H or a monovalent hydrocarbon provided that at least one of R3 and R4 is a monovalent hydrocarbon having a polycyclic aromatic gp of formula (II) or a biphenyl gp of formula (III).    R5-CpH2p- (II)    R5= a polycyclic aromatic gp; and p= a value of 1 is equal to or less than p is equal to or less than 12.    q = 1-6; k, m and n are selected such that 0 is less than or equal to K is less than 1, 0 is less than m is less than or equal to 1 provided that k + m = 1 and n is greater than or equal to 6.    Also claimed is the following: (1) an electrically conductive polymer which comprises a doped polycyclic or biphenyl aromatic gp-pendant polysilane prepd by doping (I) with an oxidative dopant.    USE -   The new polysilanes are used as photoconductive and electrically conductive materials and are partic useful in the fields of electrodes for batteries, solar cells, and boxes for electromagnetic shields. Highly conductive films or coatings can be formed.    ADVANTAGE -   The doped conductive polysilanes have good shaping properties. They are not embrittled and keep their flexibility, and they are soluble in a solvent such as THF.    (JP3060857-B2)      A polycyclic or biphenyl aromatic gp-pendant polysilane of formula (I) is new.    ((R1R2Si)k(R3R4Si)m)n (I)    R1, R2, R3 and R4 = H or a monovalent hydrocarbon provided that at least one of R3 and R4 is a monovalent hydrocarbon having a polycyclic aromatic gp of formula (II) or a biphenyl gp of formula (III).    R5-CpH2p- (II)    R5= a polycyclic aromatic gp; and p= a value of 1 is equal to or less than p is equal to or less than 12.    q = 1-6; k, m and n are selected such that 0 is less than or equal to K is less than 1, 0 is less than m is less than or equal to 1 provided that k + m = 1 and n is greater than or equal to 6.    Also claimed is the following: (1) an electrically conductive polymer which comprises a doped polycyclic or biphenyl aromatic gp-pendant polysilane prepd by doping (I) with an oxidative dopant.    USE -   The new polysilanes are used as photoconductive and electrically conductive materials and are partic useful in the fields of electrodes for batteries, solar cells, and boxes for electromagnetic shields. Highly conductive films or coatings can be formed.    ADVANTAGE -   The doped conductive polysilanes have good shaping properties. They are not embrittled and keep their flexibility, and they are soluble in a solvent such as THF.