Synthesis, Single Crystal, and Physical Properties of Asymmetrical Thiophene/Selenophene‐Fused Twistacenes. Issue 12 (4th September 2015)

• Record Type: Journal Article
• Authors: Lv, Bo; Shen, Xingxing; Xiao, Jinchong; Duan, Jingdan; Wang, Xuefei; Yi, Yuanping
• Is Part Of: Chemistry, an Asian journal. Volume 10:Issue 12(2015:Dec.)
• Page Start: 2677
• Page End: 2682
• Publication Date: 2015-09-04
• Subjects: heteroacenes -- optical property -- self-assembly -- synthesis -- twisted structures; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/asia.201500733
• Languages: English
• ISSNs: 1861-4728

Abstract

Abstract: Two asymmetrical twistacenes, PyPT andPyPS, have been synthesized and characterized. Single crystal X‐ray analyses show that both of them have twisted structures with a torsion angle of 26.65° forPyPT and 26.59° forPyPS measured between plane C5‐C23‐C25 and plane C13‐C15‐C26. The thiophene/selenophene‐fused acenes emit blue fluorescence with quantum yields of 0.39 forPyPT and 0.04 forPyPS in organic solvents, whereas the all‐carbon moleculeHBP emits green fluorescence. Meanwhile, PyPT andPyPS show a similar reversible oxide procedure with the onset potentials of 0.73 and 0.72 V, respectively. In addition, PyPT andPyPS can self‐assemble to form nanoparticles in a mixture of THF/H2 O through re‐precipitation method. Abstract : Twist and Shout : Two asymmetrical twistacenesPyPT andPyPS have been synthesized. Single crystal X‐ray analyses showed thatPyPT andPyPS have twisted structures with torsion angles of 26.65° and 26.59°, respectively. Their preliminary optoelectronic properties and self‐assembly behavior were also investigated.