Stationary and time-resolved spectra analysis of pyrazoloquinoline derivatives with pyridyl moiety
| Autor: | Mateusz Kucharek, Andrzej Danel, Danuta Grabka, Karol Szary, Anna Kolbus |
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| Rok vydání: | 2018 |
| Předmět: |
Quinoline
Quantum yield 02 engineering and technology Electroluminescence 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Fluorescence Atomic and Molecular Physics and Optics 0104 chemical sciences Analytical Chemistry chemistry.chemical_compound Wavelength chemistry Absorption band Moiety Physical chemistry 0210 nano-technology Spectroscopy Instrumentation |
| Zdroj: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 193:492-498 |
| ISSN: | 1386-1425 |
| DOI: | 10.1016/j.saa.2017.12.066 |
| Popis: | Two derivatives of pyrazoloquinoline with pyridyl moiety: 6-N,N-dimethyl-3-phenyl-1-(2-pyridyl)-1H-pyrazolo[3,4-b]quinoline (DMA-1PPhPQ) and 6-N,N-dimethyl-1,3-(di-2-pyridyl)-1H-pyrazolo[3,4-b]quinoline (DMA-1,3PPQ) were synthesized with commercial substrates. The theoretical characterization of both compounds was done. Geometry optimizations give not flat structure with the first absorption band at the wavelength about 390nm for both compounds. Several electro-optical parameters were also calculated. The optical properties of DMA-1PPHPQ and DMA-1,3PPQ were investigated by ultraviolet-visible spectroscopy and stationary as well as time-resolved fluorescence. The fluorescence maximum and fluorescence quantum yield are strongly dependent on solvent polarity function. Results indicate CT fluorescence for both compounds. Because of high emission the investigated pyrazoloquinoline derivatives can be potential candidates for fabrications of electroluminescent devices. |
| Databáze: | OpenAIRE |
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