期刊
CRYSTENGCOMM
卷 24, 期 25, 页码 4564-4572出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ce00560c
关键词
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资金
- National Science Foundation CAREER Award [CHE-1652094]
- National Science Foundation [OIA-1539035]
This study investigates the effects of solid-state arrangement on the optical and photophysical properties of mixed heterocyclic aromatic oligomers. The findings enhance our understanding of the relationship between molecular and solid-state arrangements and their impact on optoelectronic behavior.
A longstanding challenge in the field of optoelectronic materials, the effects of solid-state arrangement and morphology are still a prominent factor associated with small-molecule and polymer-based device performance. Here, mixed heterocyclic aromatic oligomers containing thiophene, furan and pyrazine are prepared alongside their methylated congeners. Their solution and solid-phase properties were studied via spectroscopic, electrochemical and single-crystal X-ray diffraction (XRD) analysis. Comparative analysis between solid-state packing arrangements and photophysical properties revealed optical band gaps as low as 1.7 eV with Stokes-shifts up to 130 nm and quantum yields of 12%. Results of the study aid in further understanding the effects of molecular and solid-state arrangements that give rise to unique optical and photophysical properties critical to enhancing optoelectronic behavior.
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