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Keywords = azomethinediimides

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18 pages, 28420 KB  
Article
New Acceptor–Donor–Acceptor Systems Based on Bis-(Imino-1,8-Naphthalimide)
by Sonia Kotowicz, Mateusz Korzec, Agnieszka Katarzyna Pająk, Sylwia Golba, Jan Grzegorz Małecki, Mariola Siwy, Justyna Grzelak, Sebastian Maćkowski and Ewa Schab-Balcerzak
Materials 2021, 14(11), 2714; https://doi.org/10.3390/ma14112714 - 21 May 2021
Cited by 12 | Viewed by 3901
Abstract
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. [...] Read more.
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. Full article
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