화학공학소재연구정보센터
Journal of Applied Polymer Science, Vol.123, No.5, 3090-3097, 2012
Time-of-flight mobilities for conducting dendrimers composed of p-phenylenevinylene dendron and triphenylamine surface group
Charge-carrier transport property of the conducting dendrimer films composed of p-phenylenevinylene with generation numbers of two and three as a dendron and triphenylamine as a surface group, which were prepared by spin-coating from the chloroform solutions, was investigated by a time-of-flight technique. For both dendrimer films, hole-carrier transport took place preferentially compared with electron-carrier transport, and typical dispersive hole-carrier transport was observed. The hole-carrier drift mobilities of the two-generation dendrimer film were one order of magnitude larger than those of the three-generation dendrimer film. The difference of the hole-carrier drift mobilities between the two-generation and three-generation dendrimers was due to the difference of the molecular geometric structure and/or the difference of the molecular weight ratio of nitrogen atom in the triphenylamine unit to the dendrimer molecule. (c) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012