Preparation of Luminescent Thermotropic Liquid Crystal from Benzodiathiazole Derivatives
Abstract
:1. Introduction
2. Results and Discussion
2.1. Molecular Design and Synthesis
2.2. The Photophysical Properties of BTC0 and BTC6 in Solution
2.3. PXRD Patterns of the Crystalline Powders of BTC0 and BTC6
2.4. Electrochemical Properties of BTC0 and BTC6
2.5. Thermal Properties and the Liquid Crystalline Phase
3. Experimental Section
3.1. Measurements
3.2. Materials and Synthesis
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Conflicts of Interest
References
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Sample | Solution a | |||||||
λabs | λem | ε | Stokes Shift | ΦF | <τf> e,f | kr b | knr c | |
BTC0 | 342 nm 489 nm | 627 nm | 5.0 × 104 cm−1·M−1 3.7 × 104 cm−1·M−1 | 138 nm | 0.81 | 7.83 ns | 1.03 × 108 s−1 | 2.43 × 107 s−1 |
BTC6 | 348 nm 500 nm | 637 nm | 4.3 × 104 cm−1·M−1 3.2 × 104 cm−1·M−1 | 137 nm | 0.78 | 7.30 ns | 1.07 × 108 s−1 | 3.01 × 107 s−1 |
Sample | Powder | |||||||
λabs | λem | Stokes Shift | ΦF | τf (fi) d | <τf> e,f | kr b | knr c | |
BTC0 | 336 nm 473 nm | 669 nm | 196 nm | 0.10 | τ1 = 0.79 ns (15%) τ2 = 2.46 ns (77%) τ3 = 92.78 ns (8%) | 1.97 ns | 5.07 × 107 s−1 | 4.57 × 108 s−1 |
BTC6 | 346 nm 470 nm | 678 nm | 208 nm | 0.26 | τ1 = 6.33 ns (78%) τ2 = 13.36 ns (22%) | 7.17 ns | 3.63 × 107 s−1 | 1.03 × 108 s−1 |
Sample | EOxa | ERedb | EHOMOc | ELUMOd | EGe |
---|---|---|---|---|---|
BTC0 | 1.08 V | −1.14 V | −5.40 eV | −3.18 eV | 2.22 eV |
BTC6 | 1.07 V | −1.16 V | −5.39 eV | −3.16 eV | 2.23 eV |
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Feng, Y.; Yu, H.; Xie, D.; Zhu, Y.; Zhong, X.; Pan, C.; Shao, G. Preparation of Luminescent Thermotropic Liquid Crystal from Benzodiathiazole Derivatives. Materials 2019, 12, 1919. https://doi.org/10.3390/ma12121919
Feng Y, Yu H, Xie D, Zhu Y, Zhong X, Pan C, Shao G. Preparation of Luminescent Thermotropic Liquid Crystal from Benzodiathiazole Derivatives. Materials. 2019; 12(12):1919. https://doi.org/10.3390/ma12121919
Chicago/Turabian StyleFeng, Yuchen, Huijuan Yu, Dexun Xie, Yi Zhu, Xinhao Zhong, Chengjun Pan, and Guang Shao. 2019. "Preparation of Luminescent Thermotropic Liquid Crystal from Benzodiathiazole Derivatives" Materials 12, no. 12: 1919. https://doi.org/10.3390/ma12121919