Tetra[2,3-thienylene]: A building block for single-molecule electromechanical actuators

被引：93
|
作者：
Marsella, MJ [1 ]
Reid, RJ [1 ]
Estassi, S [1 ]
Wang, LS [1 ]
机构：
[1] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA
来源：
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2002年 / 124卷 / 42期
关键词：
D O I：
10.1021/ja0255352
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Tetra(2,3-thienylene) is a thiophene-fused [8]annulene capable of undergoing redox-induced dimensional changes. The feasibility of efficiently translating this intrinsic function into a single polymeric electromechanical actuator is investigated by both experiment and density functional theory (B3LYP 6-31G[d,p]). A study of tetra(2,3-thienylene) and its homodimer reveal that redox-induced conformational change is conserved upon dimerization, a result that implicates similar behavior in the corresponding polymer. Theoretical predictions yield a maximum redox-induced dimensional change of 5.92% per repeat unit for the homodimer. Cyclic voltammetry reveals complete reversibility for the corresponding redox cycle. The latter two facts establish tetra(2,3-thienylene) as a suitable building block for single-molecule electromechanical actuators.
引用
收藏
页码：12507 / 12510
页数：4
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