Correlation of solid-state order to optoelectronic behavior in heterocyclic oligomers
Correlation of solid-state order to optoelectronic behavior in heterocyclic oligomers
复制标题
DOI：
10.1039/d2ce00560c
复制
发表时间：
2022-05-31
期刊：
影响因子：
3.1
通讯作者：
Watkins, Davita L.
中科院分区：
文献类型：
--
作者：
Karunathilaka, Dilan;Rajapakse, R. M. G.;Watkins, Davita L.
作为光电材料领域的一个长期挑战，固态排列和形态的影响仍然是与小分子和聚合物基器件性能相关的重要因素。在这里，含有噻吩基、呋喃和吡嗪的混合杂环芳香族低聚物与它们的甲基化同系物一起被制备。通过光谱分析、电化学分析和单晶X射线衍射分析，研究了它们的溶液性质和固相性质。固体堆积排列和光物理性质的对比分析表明，光学带隙低至1.7 eV，斯托克斯位移高达130 nm，量子产率为12%。这项研究的结果有助于进一步了解分子和固态排列的影响，这些排列产生独特的光学和光物理性质，对增强光电子行为至关重要。
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.