Quality Control of 1,4-Bis(bromomethyl)benzeneIn 2020 ,《Host-Guest Recognition and Fluorescence of a Tetraphenylethene-Based Octacationic Cage》 was published in Angewandte Chemie, International Edition. The article was written by Duan, Honghong; Li, Yawen; Li, Qingfang; Wang, Pinpin; Liu, Xueru; Cheng, Lin; Yu, Yang; Cao, Liping. The article contains the following contents:
We report the synthesis and characterization of a three-dimensional tetraphenylethene-based octacationic cage that shows host-guest recognition of polycyclic aromatic hydrocarbons (e.g. coronene) in organic media and water-soluble dyes (e.g. sulforhodamine 101) in aqueous media through CH···π, π-π, and/or electrostatic interactions. The cage⊃coronene exhibits a cuboid internal cavity with a size of approx. 17.2×11.0x6.96 Å3 and a “”hamburger””-type host-guest complex, which is hierarchically stacked into 1D nanotubes and a 3D supramol. framework. The free cage possesses a similar cavity in the crystalline state. Furthermore, a host-guest complex formed between the octacationic cage and sulforhodamine 101 had a higher absolute quantum yield (φF=28.5%), larger excitation-emission gap (Δλex-em=211 nm), and longer emission lifetime (τ=7.0 ns) as compared to the guest (φF=10.5%; Δλex-em=11 nm; τ=4.9 ns), and purer emission (ΔλFWHM=38 nm) as compared to the host (ΔλFWHM=111 nm). In the experiment, the researchers used many compounds, for example, 1,4-Bis(bromomethyl)benzene(cas: 623-24-5Quality Control of 1,4-Bis(bromomethyl)benzene)
1,4-Bis(bromomethyl)benzene(cas: 623-24-5) belongs to organobromine compounds.Depending on the type of carbon to which the bromine is bonded, organic bromide could be alkyl, alkenyl, alkynyl, or aryl. Quality Control of 1,4-Bis(bromomethyl)benzene Alkyl bromides are mainly used as alkylating agents and also find application as a solvent to extract oil from seeds and wool.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary