Wang, Zhen et al. published their research in Polymer in 2022 | CAS: 128-08-5

1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Formula: C4H4BrNO2

Adamantane-based block poly(arylene ether sulfone)s as anion exchange membranes was written by Wang, Zhen;Zhou, Shu Feng;Zhuo, Yi Zhi;Lai, Ao Nan;Lu, You Zhong;Wu, Xiao Bin. And the article was included in Polymer in 2022.Formula: C4H4BrNO2 This article mentions the following:

Current anion exchange membranes (AEMs) for fuel cells suffer from low ionic conductivity and poor mech. property. Herein, we introduce adamantane groups onto the block poly(arylene ether sulfone)s backbone to form the selected comb-shaped structure. The structure-property relationships of the AEMs are investigated by varying the ratio of the hydrophobic to hydrophilic segments. The bulk rigid adamantane group can restrain the swelling of the AEMs thus enhancing the mech. properties and expand the spacing between the hydrophilic/hydrophobic segments of the polymer chains to promote the formation of microphase separation morphol. Consequently, as characterized by at. force microscope (AFM) and transmission electron microscopy (TEM), the resulting membranes show well-defined microphase separation between the hydrophilic/hydrophobic segments, resulting in high ionic conductivity range from 27.4 to 90.2 mS cm-1 over a temperature range of 30-80°C. At the same time, the membranes present ultralow swelling ratio with the levels from 1.6% to 6.1% at 30°C and from 6.8% to 12.7% at 80°C, resp., and thus excellent mech. properties with the tensile strength as high as 11.52 MPa and elongation at break of 29.28%. The excellent comprehensive properties grant the prepared AEMs bright future for fuel cells. In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5Formula: C4H4BrNO2).

1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) belongs to organobromine compounds. Many of the organo bromine compounds are relatively nonpolar. Bromine is more electronegative than carbon (2.8 vs 2.5) and hence the carbon in a carbon–bromine bond is electrophilic in nature. The reactivity of organobromine compounds resembles but is intermediate between the reactivity of organochlorine and organoiodine compounds. For many applications, organobromides represent a compromise of reactivity and cost.Formula: C4H4BrNO2

Referemce:
Bromide – Wikipedia,
bromide – Wiktionary