| Autor: |
Souad El Mzioui, Mohamed Bouzzine, Mohammed Bouachrine, Mohamed Naciri Bennani, Mohamed Hamidi |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Orbital: The Electronic Journal of Chemistry, Vol 9, Iss 5, Pp 329-336 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1984-6428 |
| DOI: |
10.17807/orbital.v9i5.1003 |
| Popis: |
In this paper, we report a theoretical study using density functional theory (DFT) and time-dependent (TD-DFT) for R-D-π-A systems with various alkyl chains (R). Results show that the LUMO of the dye lies above the semiconductor conduction band, promoting the injection of electrons; the lower HOMO level promotes dye regeneration. The incorporation of methyl chain (CH3) has a significant reduction in the gap energy, improved red-shift absorption spectrum and increase the molar extinction coefficient at the maximum absorption wavelength compared to D. While, the increase in alkyl chain length from C2H5 to C6H13 present a relatively reduce of gap energies, low effect on the wavelength (438 nm) and converged excitation energies. DOI: http://dx.doi.org/10.17807/orbital.v9i5.1003 |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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