Carbazole core derivatives and their photophysical and electrochemical investigations supported by the theoretical calculations

Kotowicz, Sonia; Korzec, Mateusz; Małecki, Jan Grzegorz; Pająk, Agnieszka Katarzyna; Łuczak, Adam; Jung, Jarosław; Krucaite, Gintare; Tavgeniene, Daiva; Beresneviciute, Raminta; Blazevicius, Dovydas; Zaleckas, Ernestas; Sutkuviene, Simona; Grigalevicius, Saulius; Schab-Balcerzak, Ewa

doi:10.1016/j.synthmet.2023.117533

Synthetic Metals

2024

DOI: 10.1016/j.synthmet.2023.117533

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Carbazole core derivatives and their photophysical and electrochemical investigations supported by the theoretical calculations

Sonia Kotowicz,

Mateusz Korzec,

Jan Grzegorz Małecki

et al.

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Cited by 3 publications

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Synthesis and molecular modelling of new donor-π-acceptor benzothiazole-carbazole-pyridine-based fluorescent chromophore

Abou-Melha

2024

Results in Chemistry

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Synthesis and molecular modelling of new donor-π-acceptor benzothiazole-carbazole-pyridine-based fluorescent chromophore

Abou-Melha

2024

Results in Chemistry

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Triphenylamine-Appended Carbazole-Based Hole-Transport Layer for Perovskite Solar Cells Fabricated under Low Humidity

Xavier,

Kollimalaian,

Venkatakrishnan

et al. 2024

ACS Appl. Electron. Mater.

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Perovskite solar cells (PSCs), renowned for their high power conversion efficiency (PCE), have organic−inorganic metal halide perovskites (OIMHPs), hole-transport materials (HTMs), and electron-transport materials (ETMs) as crucial components determining their performance and cost. Materials like spiro-OMeTAD and PTAA, which are widely employed as HTMs in highefficiency PSCs, have difficult synthesis routes, low yields, and limited precursor availability. This results in high costs, which make them unsuitable for large-scale applications. This study explores the synthesis and fabrication of PSCs using a carbazole-based HTM, CBZ-BDMTPA, a 2,7-dimethoxytriphenylamine-appended carbazole, which has been successfully synthesized indigenously, ensuring both costeffectiveness and better production yield compared to conventional HTMs. The synthesized HTM revealed absorption in the near-ultraviolet region, low oxidation potentials, and better thermal stabilities than similar HTM analogues. The PSCs fabricated under 10% humidity exhibited a PCE of 14.04%, similar to that of the reference devices fabricated with spiro-OMeTAD (14.5%). This ensures CBZ-BDMTPA as a promising alternative to the costlier high-performing HTM. Moreover, a peak external quantum efficiency of 80% ensured efficient charge collection by CBZ-BDMTPA.

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Emission in the Biological Window from AIE-Based Carbazole-Substituted Furan-Based Compounds for Organic Light-Emitting Diodes and Random Lasers

Lupinska,

Kotowicz,

Grabarz

et al. 2024

ACS Omega

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The emission quenching observed in devices utilizing luminescent materials such as solid thin films is a prevalent issue. Consequently, searching for new organic luminescent compounds exhibiting aggregation-induced emission (AIE) behavior and characterized by relatively simple and cost-effective synthesis is of crucial interest among applications from optoelectronics and organic lasing branches. Herein, we report the optical properties of three furan-based carbazole-substituted compounds, namely, tBuCBzSO 2 Ph, tBuCBzSPh, and tBuCbzTCF, exhibiting the aforementioned AIE phenomenon. The optical properties of dyes were determined in classical spectroscopic experiments supported by quantum-chemical calculations. The thermal investigations and electrochemical properties of dyes were performed to verify their usefulness in the construction of organic light-emitting diodes (OLEDs). In pursuit of this objective, OLEDs with a different design were fabricated, and their performance was subject to evaluation. In more detail, the different design strategies relying on the utilization of neat-dye films, as well as the preparation of dyedoped poly(9-vinylcarbazole):2-(4-tert-butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole (PVK:PBD) matrices were examined. The analysis that was conducted indicated the superior potential of tBuCBzSPh for optoelectronic applications. Notably, the positive impact of the AIE effect on the emission of the OLEDs and the ability to establish the lasing phenomenon in asymmetric, poly(methyl methacrylate) (PMMA)-doped polymeric slab waveguides were verified. The study showed that the combination of the strong intramolecular charge transfer (ICT) effect with dye aggregation enables the tuning of the emission of the OLED toward the first biological window, making examined dyes promising candidates for biomedical purposes. The same optical region can be attained for laser emission at relatively low pumping conditions, reaching as low as 7.3 kW of optical power for the tBuCBzSO 2 Ph compound.

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Carbazole core derivatives and their photophysical and electrochemical investigations supported by the theoretical calculations

Cited by 3 publications

References 58 publications

Synthesis and molecular modelling of new donor-π-acceptor benzothiazole-carbazole-pyridine-based fluorescent chromophore

Synthesis and molecular modelling of new donor-π-acceptor benzothiazole-carbazole-pyridine-based fluorescent chromophore

Triphenylamine-Appended Carbazole-Based Hole-Transport Layer for Perovskite Solar Cells Fabricated under Low Humidity

Emission in the Biological Window from AIE-Based Carbazole-Substituted Furan-Based Compounds for Organic Light-Emitting Diodes and Random Lasers

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