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• W4386989198 endingPage "136722" @default.
• W4386989198 startingPage "136722" @default.
• W4386989198 abstract "To investigate the influence of π-conjugation on optical properties, models of Pyrrole oligomers with varying π-bridge lengths, ranging from 1 to 5, were constructed. The π-bridge plays a crucial role in tuning and modulating the optoelectronic characteristics of these molecules. By employing FMO (Frontier Molecular Orbital) analysis, the band gap values were determined. Notably, the pyrrole oligomer with a 1π-bridge exhibited a higher band gap (2.68eV) compared to the 5π-bridge variant (1.53eV). Moreover, the calculated hyperpolarizability (β°) values exhibited a substantial increase from 37 esu to 1876 esu as the extent of π-conjugation was augmented. This suggests that enhanced π-conjugation promotes greater nonlinear optical properties. Further analysis revealed that the pyrrole oligomer with 5π-bridges displayed maximal absorption at a longer wavelength, specifically 1024 nm. This information provides valuable insights into the absorption characteristics of these molecules. Additionally, the NBO (Natural Bond Orbital) analysis successfully captured the stable donor-acceptor interactions responsible for the ground state stabilization observed in pyrrole oligomers. On the other hand, the QTAIM (Quantum Theory of Atoms in Molecules) analysis provided detailed information regarding weak interactions, such as hydrogen bonding, which contribute to the stabilization of the modeled monomers. In summary, the creation of Pyrrole oligomer models with varying π-bridge lengths facilitated the evaluation of the impact of π-conjugation on the optical properties. The findings indicate that increasing the π-conjugation leads to a decrease in the band gap, an increase in hyperpolarizability, and absorption at longer wavelengths. Additionally, the stability of the ground state and the nature of weak interactions were elucidated through NBO and QTAIM analyses, respectively." @default.
• W4386989198 created "2023-09-24" @default.
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• W4386989198 date "2024-01-01" @default.
• W4386989198 modified "2023-10-05" @default.
• W4386989198 title "Conjugation-Modulated Optoelectronic and Anti-Corrosion Properties of Pyrrole Oligomer: Insights from DFT/TD-DFT Analysis" @default.
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• W4386989198 doi "https://doi.org/10.1016/j.molstruc.2023.136722" @default.
• W4386989198 hasPublicationYear "2024" @default.
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