Benzimidazole-Based N,O Boron Complexes as Deep Blue Solid-State Fluorophores
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials and Methods
2.2. Synthesis
2.2.1. General Procedure for the Synthesis of Ligands 7a–d
2.2.2. General Procedure for the Synthesis of Complexes 8a–d
3. Results and Discussion
3.1. Synthesis
3.2. Photophysical Properties
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Dye | λabs (nm) 1 | ε (M−1 cm−1) 2 | λem (nm) 3 | δλst | φf 4 (%) | Solvent |
---|---|---|---|---|---|---|
7a | 333 | 65,600 | 460 | 127 | 93 | DMSO |
325 | - | 455 | 130 | 39 | Solid | |
7b | 341 | 76,500 | 466 | 125 | 95 | DMSO |
325 | - | 466 | 141 | 18 | Solid | |
7c | 341 | 55,700 | 467 | 126 | 33 | DMSO |
325 | - | 466 | 141 | 5 | Solid | |
7d | 343 | 46,800 | 470 | 127 | 4 | DMSO |
325 | - | 500 | 175 | <1 | Solid | |
8a | 336 | 55,300 | 360 | 24 | 75 | DMSO |
325 | - | 380 | 55 | 12 | Solid | |
8b | 344 | 83,900 | 370 | 26 | 26 | DMSO |
325 | - | 420 | 95 | 2 | Solid | |
8c | 345 | 82,300 | 361 | 16 | 1 | DMSO |
325 | - | 395 | 70 | 2 | Solid | |
8d | 345 | 91,300 | 370 | 25 | <1 | DMSO |
325 | - | 500 | 175 | <1 | Solid |
Compound | Day Light | 254 nm | 365 nm |
---|---|---|---|
7a | |||
7b | |||
7c | |||
7d | |||
8a | |||
8b | |||
8c | |||
8d |
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Vaz, P.A.A.M.; Rocha, J.; Silva, A.M.S.; Guieu, S. Benzimidazole-Based N,O Boron Complexes as Deep Blue Solid-State Fluorophores. Materials 2021, 14, 4298. https://doi.org/10.3390/ma14154298
Vaz PAAM, Rocha J, Silva AMS, Guieu S. Benzimidazole-Based N,O Boron Complexes as Deep Blue Solid-State Fluorophores. Materials. 2021; 14(15):4298. https://doi.org/10.3390/ma14154298
Chicago/Turabian StyleVaz, Patrícia A. A. M., João Rocha, Artur M. S. Silva, and Samuel Guieu. 2021. "Benzimidazole-Based N,O Boron Complexes as Deep Blue Solid-State Fluorophores" Materials 14, no. 15: 4298. https://doi.org/10.3390/ma14154298