NMR and DFT studies of the aggregation behavior of dicationic dialkyl DABCO bistriflimide salts in solution

Safari, Niloufar; Shirini, Farhad; Tajik, Hassan; Saielli, Giacomo

doi:10.1016/j.molliq.2021.115313

Cited by 2 publications

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“…Such less flexible framework also incurs an elevated energy barrier for the inversion of nitrogen atoms. [40] Consequently, the lone pair electrons of nitrogen atoms in DABC are localized precisely to make DABC more attuned for quaternization. [41,42] Its stronger basic and bulky structure also enhances the thermal stability of the resultant ammonium cations and diminishes the cyclic by-product.…”

Section: Introductionmentioning

confidence: 99%

“…1,4‐diazabicyclo[2.2.2]octane (DABC) features a caged‐shaped diazabicyclic molecular structure with two tertiary sp 3 ‐nitrogen atoms at the bridgehead positions. Such less flexible framework also incurs an elevated energy barrier for the inversion of nitrogen atoms [40] . Consequently, the lone pair electrons of nitrogen atoms in DABC are localized precisely to make DABC more attuned for quaternization [41, 42] .…”

Section: Introductionmentioning

confidence: 99%

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Diazabicyclic Electroactive Ionenes for Efficient and Stable Organic Solar Cells

et al. 2023

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Electroactive ionenes combining caged-shaped diazabicyclic cations and aromatic diimides were developed as interlayers in organic solar cells (OSCs). These ionenes reduce the work-function of air-stable metal electrodes (e.g., Ag, Cu and Au) by generating strong interfacial dipoles, and their optoelectronic and morphological characters can be modulated by aromatic diimides, leading to high conductivity and good compatibility with active layers. The optimal ionene exhibits superior charge-transport, desirable crystallinity, and weak visible-absorption, boosting the efficiency of benchmark PM6 : Y6-based OSCs up to 17.44 %. The corresponding normal devices show excellent stability at maximum power point test under one sun illumination for 1000 h. Replacing Y6 with L8-BO promotes the efficiency to 18.43 %, one of the highest in binary OSCs. Notably, high efficiencies > 16 % are maintained as the interlayer thickness increasing to 105 nm, the best result with interlayer-thickness over 100 nm.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Diazabicyclic Electroactive Ionenes for Efficient and Stable Organic Solar Cells

et al. 2023

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show abstract

Diazabicyclic Electroactive Ionenes for Efficient and Stable Organic Solar Cells

et al. 2023

View full text Add to dashboard Cite

Electroactive ionenes combining caged‐shaped diazabicyclic cations and aromatic diimides were developed as interlayers in organic solar cells (OSCs). These ionenes reduce the work‐function of air‐stable metal electrodes (e.g., Ag, Cu and Au) by generating strong interfacial dipoles, and their optoelectronic and morphological characters can be modulated by aromatic diimides, leading to high conductivity and good compatibility with active layers. The optimal ionene exhibits superior charge‐transport, desirable crystallinity, and weak visible‐absorption, boosting the efficiency of benchmark PM6 : Y6‐based OSCs up to 17.44 %. The corresponding normal devices show excellent stability at maximum power point test under one sun illumination for 1000 h. Replacing Y6 with L8‐BO promotes the efficiency to 18.43 %, one of the highest in binary OSCs. Notably, high efficiencies >16 % are maintained as the interlayer thickness increasing to 105 nm, the best result with interlayer‐thickness over 100 nm.

show abstract

NMR and DFT studies of the aggregation behavior of dicationic dialkyl DABCO bistriflimide salts in solution

Cited by 2 publications

References 31 publications

Diazabicyclic Electroactive Ionenes for Efficient and Stable Organic Solar Cells

Diazabicyclic Electroactive Ionenes for Efficient and Stable Organic Solar Cells

Diazabicyclic Electroactive Ionenes for Efficient and Stable Organic Solar Cells

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