Lei XU, Lin ZHU, Chun ZHANG, Chang-qing YE, Shuo-ran CHEN, Lin LI, Zuo-qin LIANG, Xiao-mei WANG. Study on Properties of Azaanthracene Derivatives With Triplet-Triplet Annihilation Upconversion and One-Photon Hot Band Absorption Upconversion[J]. Spectroscopy and Spectral Analysis, 2022, 42(6): 1761
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 6, 1761 (2022)
Fig. 1. TTA-UC (a) and OPA-UC (b) Joblonski energy level diagrams
Fig. 2. Schematic diagram of the molecular structure of the azaanthracene derivative
Fig. 3. Absorption spectra (a) and fluorescence spectra (b) of azaanthracene derivatives
Fig. 4. Fluorescence lifetime curves of azaanthracene derivatives
Fig. 5. Schematic diagram of the energy levels of three sensitizers (PSF, SFT and MTV) and the annihilator
Fig. 6. Upconversion spectra of azaanthracene derivatives as sensitizer (10 μmol·L-1) and DPA (1 mmol·L-1)
Solvent: DCM/NPA=1/1,λ ex= 532 nm
Solvent: DCM/NPA=1/1,
Fig. 7. Fluorescence quenching diagram of annihilator (DPA) to sensitizer
(a): PSF; (b): SFT (Sensitizer: 6 μmol·L-1, Solvent: DCM,λ ex=532 nm)
(a): PSF; (b): SFT (Sensitizer: 6 μmol·L-1, Solvent: DCM,
Fig. 8. OPA-UC spectrum (a) and the corresponding photos (b) of azaanthracene derivatives
Concentraction: 1×10-5 mol·L-1; Solvent: DMSO,λ ex=655 nm
Concentraction: 1×10-5 mol·L-1; Solvent: DMSO,
Fig. 9. The power density upconversion spectra diagram (a, b) and corresponding logarithmic linear diagram (c, d) of azaanthracene derivatives
(a): PSF; (b): MTV, concentraction: 50 μmol·L-1, solvent: DMSO,λ ex=655 nm
(a): PSF; (b): MTV, concentraction: 50 μmol·L-1, solvent: DMSO,
Fig. 10. Concentration-dependent upconversion spectra of azaanthracene derivatives
(a): PSF; (b): MTV, (solvent: DMSO,λ ex=655 nm)
(a): PSF; (b): MTV, (solvent: DMSO,
Fig. 11. Curves of upconversion efficiency for azaanthracene derivatives at different concentrations
Solvent: DMSO
Solvent: DMSO
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Table 1. Related photophysical parameters of azaanthracene derivatives
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Table 2. The energy level data of sensitizers (PSF, SFT and MTV) and DPA binary systems
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Table 3. OPA-UC properties of azaanthracene derivatives at different concentrations
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