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Oligothiophenes are π‐conjugated semiconducting and fluorescent molecules whose self‐assembly properties are widely investigated for application in organic electronics, optoelectronics, biophotonics, and sensing. Here an approach to the preparation of crystalline oligothiophene nano/microfibers is reported based on the use of a “sulfur overrich” quaterthiophene building block, T4S4 , containing in its covalent network all the information needed to promote the directional, π–π stacking‐driven, self‐assembly of Y‐T4S4‐Y oligomers into fibers with hierarchical supramolecular arrangement from nano‐ to microscale. It is shown that when Y varies from unsubstituted thiophene to thiophene substituted with electron‐withdrawing groups, a wide redistribution of the molecular electronic charge takes place without substantially affecting the aggregation modalities of the oligomer. In this way, a structurally comparable …
Publication date: 
1 Aug 2018

Francesca Di Maria, Mattia Zangoli, Massimo Gazzano, Eduardo Fabiano, Denis Gentili, Alberto Zanelli, Andrea Fermi, Giacomo Bergamini, Davide Bonifazi, Andrea Perinot, Mario Caironi, Raffaello Mazzaro, Vittorio Morandi, Giuseppe Gigli, Andrea Liscio, Giovanna Barbarella

Biblio References: 
Volume: 28 Issue: 32 Pages: 1801946
Advanced Functional Materials