Influence of nitrogen exchange in the core-shell structure of naphthalenediimide molecules on the advancement of quantum electronic properties

• Published in: Synthetic metals Vol. 309; p. 117748
• Main Authors: Hadi, Hamid, Mahmoud, Ahmed Mahmoud Ahmed, Cherif, Imen, Safari, Reza, Gassoumi, Bouzid, Abdelaziz, Balkis, Basha, A Aathif, Imran, Predhanekar Mohamed, Khan, Muhammad Usman, Zandi, Hasan, Mahdouani, Mounira, Ayachi, Sahbi, Ben Chaabane, Rafik, Hessien, Mahmoud M.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2024
• Subjects: ELF; Field-effect device; N-replacement; QTAIM; Quantum electronic; Semiconductor; Semiconductor; Field-effect device; Quantum electronic; N-replacement; ELF; QTAIM
• ISSN: 0379-6779
• DOI: 10.1016/j.synthmet.2024.117748

This study explores how nitrogen substitution and gold electrodes collectively influence the electronic characteristics of naphthalenediimide (NDI) molecules (M = 1, 2, and 3) through theoretical analysis. Utilizing ELF, LOL, QTAIM, and NCI analyses, we reveal significant alterations in NDI's electronic structure and interactions upon bonding with gold electrodes (Au-M-Au). Both ELF and LOL analyses demonstrate increased electron localization and delocalization on the NDI surface due to gold electrodes, with a stronger effect on nitrogen-doped molecules (M = 2, 3). QTAIM analysis confirms favorable non-covalent interactions, including evident hydrogen bonding, between NDI molecules and gold electrodes, notably intensified in doped molecules, especially the Au…O interaction. NCI analysis provides insight into the diverse interactions within the molecular system. Overall, this research highlights the crucial role of gold electrodes and nitrogen substitution in fine-tuning NDI molecules' electronic properties. The observed modulation of electron behavior and formation of beneficial interactions with gold electrodes hint at promising applications for doped NDI-gold systems requiring efficient charge transport mechanisms. [Display omitted] •Exploring the design and electronic properties of novel doped NDI.•Implementing an effective N-replacement strategy, reducing the band gap of NDI to 1.44 eV.•Demonstrating enhanced charge transfer under high electric fields in Au-NDI-Au models.•QTAIM/NCI analyses exhibit hydrogen-bonding interactions between NDI and Au.•Doped NDI-gold systems prove robust for efficient charge transport mechanisms.