High intrachain hole mobility on molecular wires of ladder-type poly(p-phenylenes)

被引:178
作者
Prins, P
Grozema, FC
Schins, JM
Patil, S
Scherf, U
Siebbeles, LDA
机构
[1] Delft Univ Technol, DelftChemTech, Optoelect Mat Sect, NL-2629 JB Delft, Netherlands
[2] Berg Univ Gesamthsch Wuppertal, Dept Chem, D-42119 Wuppertal, Germany
[3] Berg Univ Gesamthsch Wuppertal, Inst Polymer Technol, D-42119 Wuppertal, Germany
关键词
D O I
10.1103/PhysRevLett.96.146601
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have studied the high-frequency (34 GHz) mobility of positive charge carriers on isolated ladder-type polymer chains in dilute solution. We find that the high-frequency mobility is limited by the chain ends on chains as long as 35 monomers. The intrachain motion of charge carriers can be described by one-dimensional diffusion between infinitely high reflecting barriers, representing the chain ends. Our data indicate that the intrachain mobility for ladder-type polymer chains is close to 600 cm(2)/V s. With this high mobility the ladder-type polymer is a promising candidate for future use as an interconnecting wire in molecular electronics.
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页数:4
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