Affiliation:
1. Key Laboratory of Cluster Science Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical Engineering Beijing Institute of Technology Beijing 102488 P. R. China
2. Beijing National Laboratory for Molecular Sciences Key Laboratory of Green Printing CAS Research/Education Centre for Excellence in Molecular Sciences Institute of Chemistry Chinese Academy of Sciences (ICCAS) Beijing 100190 P. R. China
3. Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
Abstract
AbstractLow band gap materials have always been a focus of attention due to their potential applications in various fields. In this work, a series of asymmetric bistricyclic aromatic ene (BAE) compounds with fluorenylidene‐cyclopentadithiophene (FYT) skeleton were facially synthesized, which were modified with different substituents (−OMe, −SMe). The FYT core exhibit twisted C=C bond with dihedral angles around 30°, and the introduction of −SMe group can provide additional S⋅⋅⋅S interaction between molecules, which is conducive to the charge transporting. The UV‐Vis spectra, electrochemistry and photoelectron spectroscopy revealed that these compounds have relatively narrow band gaps, particularly, the −SMe modified compounds have slightly lower HOMO and Fermi energy levels than that of the −OMe modified compounds. Furthermore, PSCs devices were fabricated with the three compounds as HTMs, and FYT‐DSDPA exhibit the best performance among them, revealing the fine‐tuning band structure could influence properties of HTMs.
Funder
National Natural Science Foundation of China
Subject
General Chemistry,Catalysis,Organic Chemistry
Cited by
1 articles.
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