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New Quinoxaline-Containing Monomers for Narrow-Bandgap Polymers
- Source :
- Doklady Chemistry. 482:195-200
- Publication Year :
- 2018
- Publisher :
- Pleiades Publishing Ltd, 2018.
-
Abstract
- Two new fused quinoxaline-containing monomers—2,3-bis(9-(2-decyltetradecyl)-9H-carbazol-3-yl)dithieno[3,2-f:2'3'-h]quinoxaline (М1) and 2,5-di(nonadecan-3-yl)bis[1,3]thiazolo[4,5-a:5',4'-c]bisthieno[3,2-h:2',3'-j]phenazine (М2)—have been synthesized in high yields of 88 and 83% as promising building blocks of D-A polymers for photovoltaic applications. The optical bandgaps, found from the absorption edge, are 2.79 and 2.88 eV, respectively. The HOMO/LUMO energies of М1 and М2 are–5.83/–2.96 and–5.83/–2.98 eV, respectively. Both monomers have low-lying HOMO levels, which is favorable for a high open-circuit voltage and a high stability in air in the development of PSCs. The E g ec values of monomers М1 and М2 are 2.87 and 2.85 eV and are consistent well with the optical bandgap (2.79 and 2.88 eV, respectively).
- Subjects :
- chemistry.chemical_classification
Band gap
Phenazine
02 engineering and technology
General Chemistry
Polymer
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
chemistry.chemical_compound
Crystallography
Quinoxaline
Monomer
chemistry
Absorption edge
0210 nano-technology
HOMO/LUMO
Subjects
Details
- ISSN :
- 16083113 and 00125008
- Volume :
- 482
- Database :
- OpenAIRE
- Journal :
- Doklady Chemistry
- Accession number :
- edsair.doi...........031f26c9f7f2489db32cc15481b8b375