Supramolecular Engineering of Oligothiophene Nanorods without Insulators: Hierarchical Association of Rosettes and Photovoltaic Properties
作者:Shiki Yagai、Mika Suzuki、Xu Lin、Marina Gushiken、Takuya Noguchi、Takashi Karatsu、Akihide Kitamura、Akinori Saeki、Shu Seki、Yoshihiro Kikkawa、Yuki Tani、Ken-ichi Nakayama
DOI:10.1002/chem.201404428
日期:2014.12.1
exists as a mixture of monomers and small hydrogen‐bonded aggregates. Hierarchical organization of the hydrogen‐bonded aggregates took place through π–π stacking interactions upon casting their toluene solutions, resulting in the growth of highly ordered nanorods whose widths are consistent with the diameters of the rosettes. The nanorods could be generated in the presence of soluble fullerene derivatives
不带有长脂肪族尾巴的低分子噻吩超分子花环已被设计为可溶液加工的块状异质结太阳能电池的半导体纳米材料。莲座丛由六个通过多个氢键聚集的巴比妥基噻吩并[[噻吩(htyl噻吩)] n(n = 3,4,5)单元]组成,这些单元可以通过扫描隧道显微镜(STM)在一个温度下直接观察到。固液界面。[D 8 ]甲苯中的1 H NMR光谱表明,Bar‐T‐hT n以单体和小氢键团聚体的混合物形式存在。氢键键合聚集体的分层组织是在浇铸甲苯溶液时通过π–π堆积相互作用而发生的,从而导致高度有序的纳米棒的生长,其宽度与玫瑰花结的直径一致。可以通过溶液流延或所得薄膜的退火在可溶性富勒烯衍生物存在下产生纳米棒。基于这些块状异质结薄膜制造的太阳能电池的功率转换效率为1-3%,远高于非氢键结合的参考低聚噻吩和具有长脂肪族尾巴的衍生物。