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2 article(s) from Maeda, Hiromitsu

Thermodynamic equilibrium between locally excited and charge transfer states in perylene–phenothiazine dyads

Issei Fukunaga,
Shunsuke Kobashi,
Yuki Nagai,
Hiroki Horita,
Hiromitsu Maeda and
Yoichi Kobayashi

Beilstein J. Org. Chem. 2025, 21, 1577–1586, doi:10.3762/bjoc.21.121

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Figure 1: Molecular structures of Pe–PTZ, Pe–PTZ(TPA), Pe–PTZ(TPA)₂, and Pe–Ph–PTZ(TPA)₂.

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Figure 2: Energy diagrams around the frontier orbitals of Pe–PTZ, Pe–PTZ(TPA), Pe–PTZ(TPA)₂, and Pe–Ph–PTZ(TP...

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Figure 3: Steady-state (a) absorption and (b) emission spectra of Pe–PTZ, Pe–PTZ(TPA), Pe–PTZ(TPA)₂, and Pe–P...

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Figure 4: Emission decay curves of Pe–PTZ(TPA)₂ in benzene excited at 403 nm and probed at 460 and 632 nm.

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Figure 5: Microsecond transient absorption (a) spectra and (b) dynamics of Pe–PTZ(TPA)₂ in benzene excited at...

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Figure 6: Femtosecond-to-nanosecond transient absorption spectra and evolution-associated spectra (EAS) of Pe...

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Figure 7: (a) Femtosecond-to-nanosecond transient absorption spectra and (b) evolution-associated spectra (EA...

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Figure 8: Summarized photophysical process of Pe–PTZ(TPA)₂ in benzene at room temperature. The left side desc...

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Published 05 Aug 2025

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Anion-dependent ion-pairing assemblies of triazatriangulenium cation that interferes with stacking structures

Yohei Haketa,
Takuma Matsuda and
Hiromitsu Maeda

Beilstein J. Org. Chem. 2024, 20, 2567–2576, doi:10.3762/bjoc.20.215

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Figure 1: Triazatriangulenium cations 1a⁺ and 1b⁺.

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Figure 2: Synthesis of triazatriangulenium ion pairs 2⁺-X⁻ (X⁻ = BF₄⁻, PF₆⁻, B(C₆F₅)₄⁻, and PCCp⁻).

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Figure 3: Single-crystal X-ray structures of (a) 2⁺-Cl⁻, (b) 2⁺-BF₄⁻, (c) 2⁺-PF₆⁻, (d) 2⁺-B(C₆F₅)₄⁻, and (e) 2...

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Figure 4: Hirshfeld surface analysis mapped with d_norm of closely contacted two 2⁺ in (a) 2⁺-BF₄⁻ and (b) 2⁺-...

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Figure 5: Hirshfeld surface analysis mapped with d_norm of closely contacted ion pairs: (a) 2⁺-Cl⁻, (b) 2⁺-BF₄⁻...

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Figure 6: (i) Single-crystal X-ray structures and (ii) interaction energies for the pairs (a) 2⁺-Cl⁻, (b) 2⁺-...

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Figure 7: Hirshfeld surface analysis mapped with d_norm of closely contacted ion pairs: (a) 2⁺-B(C₆F₅)₄⁻ and (...

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Figure 8: (i) Single-crystal X-ray structures and (ii) interaction energies for the pairs for (a) 2⁺-B(C₆F₅)₄⁻...

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Published 10 Oct 2024

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