Kotowicz Sonia, Korzec Mateusz, Pająk Agnieszka Katarzyna, Golba Sylwia, Małecki Jan Grzegorz, Siwy Mariola, Grzelak Justyna, Maćkowski Sebastian, Schab-Balcerzak Ewa
Institute of Chemistry, University of Silesia, 9 Szkolna Str., 40-006 Katowice, Poland.
Institute of Materials Engineering, University of Silesia, 75 Pulku Piechoty Str., 41-500 Chorzow, Poland.
Materials (Basel). 2021 May 21;14(11):2714. doi: 10.3390/ma14112714.
In this paper, six novel symmetrical bis-(imino-1,8-naphthalimides) differing in core and N-substituent structure were synthesized, and their thermal (TGA, DSC), optical (UV-Vis, PL), electrochemical (DPV, CV) properties were evaluated. The compounds were stable to 280 °C and could be transferred into amorphous materials. Electrochemical investigations showed their ability to occur reductions and oxidations processes. They exhibited deep LUMO levels of about -3.22 eV and HOMO levels above -5.80 eV. The optical investigations were carried out in the solutions (polar and non-polar) and in films and blends with PVK:PBD. Bis-(imino-1,8-naphthalimides) absorbed electromagnetic radiation in the range of 243-415 nm and emitted light from blue to yellow. Their capacity for light emission under voltage was preliminarily tested in devices with an active layer consisting of a neat compound and a blend with PVK:PBD. The diodes emitted green or red light.
本文合成了六种在核心结构和N-取代基结构上不同的新型对称双（亚氨基-1,8-萘二甲酰亚胺），并对其热性能（热重分析、差示扫描量热法）、光学性能（紫外可见光谱、光致发光）、电化学性能（差分脉冲伏安法、循环伏安法）进行了评估。这些化合物在280℃下稳定，且可转变为非晶态材料。电化学研究表明它们能够发生还原和氧化过程。它们展现出约-3.22 eV的深LUMO能级和高于-5.80 eV的HOMO能级。光学研究在溶液（极性和非极性）、薄膜以及与聚乙烯基咔唑：聚丁二炔的共混物中进行。双（亚氨基-1,8-萘二甲酰亚胺）在243 - 415 nm范围内吸收电磁辐射，并发出从蓝色到黄色的光。在由纯化合物以及与聚乙烯基咔唑：聚丁二炔的共混物组成活性层的器件中，初步测试了它们在电压下的发光能力。二极管发出绿色或红色光。
