nanotube;
polypyrrole and derivatives;
polythiophene and derivatives;
transport measurements;
metal-insulator phase transitions;
D O I:
10.1016/S0379-6779(02)00626-4
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Nanofibers of poly(3,4-ethylenedioxythiophene) - PEDOT and polypyrrole - PPy have been prepared using the template method. We present a study of the electronic and mechanical properties of these nanofibers. Strong variations of the estimated conductivity, the resistivity ratio rho(1.5K)/rho(300K) and the elastic modulus are observed when the diameter is reduced from 200nm to 20nm. They are discussed in terms of change in the conformation of the polymer chains and/or doping level due to the confinement.