Synthesis of polymeric ionic liquids with unidirectional chain topology by AB step growth polymerization was written by Suckow, M.;Roy, M.;Sahre, K.;Haeussler, L.;Singha, N.;Voit, B.;Boehme, F.. And the article was included in Polymer in 2017.Quality Control of 1-Bromo-6-chlorohexane The following contents are mentioned in the article:
Poly(ionic liquid)s with alkyl imidazolium moieties in the main chain were synthesized by step growth addition polymerization of the AB monomers 1-(4-chlorobutyl)-1H-imidazole, 1-(6-chlorohexyl)-1H-imidazole, and 1-(6-bromohexyl)-1H-imidazole in the melt. The molar masses of the polymers were controlled by adding 1-butyl-1H-imidazole as monofunctional chain stopper. The bromine containing monomer polymerized spontaneously at room temperature whereas the chlorine containing monomers were sufficiently stable up to 40 °C. This could be evidenced by DSC measurements which showed a broad exothermal peak above 40 °C caused by the polymerization MALDI-TOF investigations proved that dissociation of the alkyl imidazolium groups which might disturb the expected directional chain topol. (AB-AB-AB…) did not occur. This is an important precondition for the intended crosslinking free grafting reactions of the AB monomers on halide containing polymers without any danger of gelation. Addnl., the results of the MALDI-TOF investigations indicated partial complexation of the polymer with the matrix and structural rearrangements during the measurements which converted the ionic imidazolium moieties into neutral moieties. The thermal behavior of the poly(ionic liquid)s has proved to be dependent on the length of the alkyl linking group between the imidazolium moieties and the type of counter ion. This study involved multiple reactions and reactants, such as 1-Bromo-6-chlorohexane (cas: 6294-17-3Quality Control of 1-Bromo-6-chlorohexane).
1-Bromo-6-chlorohexane (cas: 6294-17-3) belongs to organic chlorides. Organochlorines stimulate the central nervous system and cause convulsions, tremor, nausea, and mental confusion. Examples are dichlorodiphenyltrichloroethane (DDT), chlordane, lindane, endosulfan, and dieldrin. Organochlorine compounds are lipophylic, meaning they are more soluble in fat than in water. This gives them a high tenancy to accumulate in the food chain (biomagnification).Quality Control of 1-Bromo-6-chlorohexane
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics