Synthesis of polysiloxane random copolymers that contain quaternized imidazolium moieties was written by Ichikawa, Tsukasa;Nemoto, Nobukalsu. And the article was included in Kobunshi Ronbunshu in 2016.Electric Literature of C11H20N2 This article mentions the following:
Polysiloxane random copolymers that contain quaternized imidazolium salts ([PImn]Cl) (n is the number of methylene groups) were obtained by the quaternization reaction of poly[dimethylsiloxane-ran-(3-chloropropylmethylsiloxane)] (P1) with imidazole derivatives having different lengths of alkyl chains (Imn) at the 1-position. The introduction ratio of imidazolium salts into P1 was estimated to be from 93 to 100 mol % from 1H NMR anal. The glass transition temperatures (Tgs) of [PImn]Cls were determined by differential scanning calorimetry (DSC). Of all the samples. [Plm5]Cl and [Plm6]|Cl had the lowest Tg of 14°C which is 12-15 K lower than the Tg of polysiloxane homopolymer having quaternized imidazolium salts without polydimethylsiloxane units. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Electric Literature of C11H20N2).
1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Imidazole is a heterocyclic compound with a five-membered planar ring. It is amphoteric and highly polar. Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Electric Literature of C11H20N2
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem