Javadi, Ali; Shockravi, Abbas; Shourkaei, Fateme Ahmadi; Koohgard, Mehdi; Malek, Ali published the artcile< Highly refractive thiazole-containing polyimides: a structural property comparison>, Product Details of C9H7N3O2S, the main research area is thiazole containing polyimide structural thermal property.
Highly refractive, thermally stable, and solution processable polyimides (PIs) were synthesized by the introduction of thiazole units, thioether linkages, and Ph or nitrophenyl groups into the polymer backbones. These PIs were prepared via the polycondensation of two diamine monomers, 5,5′-thiobis(2-amino-4-phenyl-thiazole) (DA-1) or 5,5′-thiobis(2-amino-4-(3-nitrophenyl)thiazole) (DA-2), with various aromatic dianhydrides (a-d). The bulky pendant Ph or nitrophenyl units as well as the non-coplanar conformations because of ortho-sulfide linkages endowed the resulting PIs with excellent solubility in organic solvents. These PIs showed outstanding thermal stability, with 10% weight loss temperatures exceeding 492 °C under nitrogen and 475 °C in air atm., while their glass transition temperatures were in the range of 239-278 °C. In general, the synergic effects of thiazole groups, Ph or nitrophenyl substituents, and thioether linkages provided PIs with very high refractive indexes of up to 1.7646 at 632.8 nm, along with small birefringences (<0.0085) and high Abbe's numbers The structure-property relationships of the analogous PIs containing Ph or nitrophenyl substituents groups were also studied in detail by comparing the results. Journal of Polymer Research published new progress about Chars. 57493-24-0 belongs to class thiazole, and the molecular formula is C9H7N3O2S, Product Details of C9H7N3O2S.
Referemce:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica