Synthesis, Structures, and Optoelectronic Properties of Pyrene-Fused Thioxanthenes

Abstract

A series of pyrene-fused thioxanthenes have been synthesized via a new concise route, and their crystal structures and photophysical properties have been fully investigated. The eight-ring fused dipyrene–thioxanthene (<b>DPTA</b>) can crystallize to monoclinic and triclinic X-ray structures, and their precursor has been isolated as two stable atropisomers with different photophysical properties. The <i>E</i><sub>HOMO</sub> becomes higher and the <i>E</i><sub>g</sub> become narrower as more thioxanthene unit being fused with pyrene

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