Use of Side-Chain Incompatibility for Tailoring Long-Range p/n Heterojunctions: Photoconductive Nanofibers Formed by Self-Assembly of an Amphiphilic Donor-Acceptor Dyad Consisting of Oligothiophene and Perylenediimide
作者:Wei-Shi Li、Akinori Saeki、Yohei Yamamoto、Takanori Fukushima、Shu Seki、Noriyuki Ishii、Kenichi Kato、Masaki Takata、Takuzo Aida
DOI:10.1002/asia.201000111
日期:——
using side‐chain incompatibility of a covalently connected donor–acceptor (D–A) dyad has been successfully carried out. An oligothiophene–perylenediimide dyad, when modified with triethylene glycol side chains at one terminus and dodecyl side chains at the other (2 Amphi), self‐assembles into nanofibers with a long‐range D/A heterojunction. In contrast, when the dyad is modified with dodecyl side chains
为了以分子水平的精度定制有机p / n异质结,已经成功地实施了使用共价连接的供体-受体(D–A)二元体的侧链不相容性的合理设计策略。寡噻吩-per二酰亚胺二聚体在一个末端用三甘醇侧链修饰,另一末端用十二烷基侧链修饰(2 Amphi),可自组装成具有长程D / A异质结的纳米纤维。相反,如果在两个末端都用十二烷基侧链修饰了二元组(2 Lipo),则会导致定义不清的超细纤维。在使用微间隙电极的稳态测量中,2 Amphi纳米纤维的流延膜显示出比2 Lipo微纤维更好的光电导性能。。闪烁光解时间分辨的微波电导率测量与瞬态吸收光谱法相结合,清楚地表明2 Amphi的纳米纤维本质上比2 Lipo的微纤维组件具有更好的载流子生成和传输特性。