Synthesis and Aggregation Behavior of Novel Linear and Branched Oligothiophene‐Containing Organosilicon Multipods
作者:Marina S. Polinskaya、Yuriy N. Luponosov、Oleg V. Borshchev、Jochen Gülcher、Ulrich Ziener、Ahmed Mourran、Jingbo Wang、Mikhail I. Buzin、Aziz M. Muzafarov、Sergey A. Ponomarenko
DOI:10.1002/ejoc.202101495
日期:2022.4.21
Synthesis of linear and branched organosilicon derivatives of oligothiophenes with different conjugation lengths, aliphatic spacers, and terminal substituents is described. Soluble compounds with the conjugation length up to 7 thiophene rings were obtained. Their aggregation in dilute solutions, self-assembly in thin films, and phase behavior in the bulk is reported.
Five homologous series of α- and α,ω-substitutedoligothiophenes up to an undecamer with branched and linear alkyl chains, respectively, are presented. These series are compared with respect to self-organisation in solution and in solid state. UV/Vis absorption data for the long disubstituted branchedoligothiophenes indicate the formation of aggregates in solution, expressed by a bathochromic shift