Synthesis, Properties, and Solar Cell Performance of Poly(4-(p-alkoxystyryl)thiazole)s was written by Jaeger, Jakob;Schraff, Sandra;Pammer, Frank. And the article was included in Macromolecular Chemistry and Physics in 2018.Safety of 5-Bromo-4-methyl-thiazol-2-ylamine hydrobromide The following contents are mentioned in the article:
Polythiazoles (PvTzs) featuring conjugated styryl sidechains equipped with different solubilizing p-alkoxy-groups (-OR, R = n-octyl, n-dodecyl, 2-ethylhexyl, 2-hexyldecyl) is prepared by Negishi-coupling polycondensation. Soluble material with number-average mol. weights of up to Mn = 8.5 kDa (polydispersity (PDI) = 1.3, d.p. (DPn) ≈ 20) is obtained, with a head-to-tail content of the PvTzs of ≈77%, as estimated from comparison with reference polymers. The polymers exhibit optical absorption properties similar to their polythiophene analogs, while their electrochem. characterization shows a significant stabilization of their frontier orbital levels. Fluorescence measurements indicate that upon excitation of the electron rich alkoxystyryl side-chains charge transfer onto the more electron deficient polythiazole backbone occurs. This finding is corroborated by d. functional theory (DFT) calculations on oligomeric model systems, which also consistently reproduce the optical properties observed for the polymers. The potential of these materials for applications in organic electronics can be demonstrated by their use as donor materials in organic photovoltaic cells, which exhibit higher open circuit voltages (VOC, up to 0.86 V) than P3HT- or analogous polythiophene-based cells (VOC = 0.5-0.6 V). This study involved multiple reactions and reactants, such as 5-Bromo-4-methyl-thiazol-2-ylamine hydrobromide (cas: 79247-77-1Safety of 5-Bromo-4-methyl-thiazol-2-ylamine hydrobromide).
5-Bromo-4-methyl-thiazol-2-ylamine hydrobromide (cas: 79247-77-1) belongs to thiazole derivatives. Thiazole rings are planar and aromatic. Thiazoles are characterized by larger pi-electron delocalization than the corresponding oxazoles and have therefore greater aromaticity. The pyridine-type nitrogen in the thiazole ring deactivates the ring for electrophilic substitution reactions, which is further reduced in acid due to protonation of the thiazole ring.Safety of 5-Bromo-4-methyl-thiazol-2-ylamine hydrobromide
Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica