The new fully planar cyclopentadithiophene, 4-n-dodecylidene-4H-cyclopenta(2,1-b;3,4-b′)dithiophene, shows extensive π-stacking in the solid state with short intermolecular distances (ca. 3.5 Å) between adjacent molecules. Polymerisation of this monomer by two different protocols gave solution processable alkenyl-bridged cyclopentadithiophene polymers with extended π-conjugation in the main chain.
4-n-dodecylidene-4H-cyclopenta(2,1-b;3,4-b′)dithiophene 这种新型全平面
环戊二烯噻吩在固态下显示出广泛的π堆叠,相邻分子之间的分子间距很短(约 3.5 Å)。通过两种不同的方案对这种单体进行聚合,可得到主链中具有扩展π共轭的、可溶液加工的烯基桥接环戊并
噻吩聚合物。