In 2019,Journal of Materials Chemistry A: Materials for Energy and Sustainability included an article by Wang, Hongjian; Chen, Long; Yang, Hao; Wang, Meidi; Yang, Leixin; Du, Haiyan; Cao, Chenliang; Ren, Yanxiong; Wu, Yingzhen; Pan, Fusheng; Jiang, Zhongyi. Reference of 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde. The article was titled 《Bronsted acid mediated covalent organic framework membranes for efficient molecular separation》. The information in the text is summarized as follows:
Covalent organic frameworks (COFs) hold great promise in mol. separation However, since the aperture size of most COFs is in the range of 0.8-4.9 nm, constructing COF membranes with a smaller aperture size is thus in urgent demand yet remains a grand challenge. In this study, a Bronsted acid mediated one-step self-assembly method for the fabrication of COF membranes is proposed by segregating the organic phase (containing Bronsted acids and aldehydes) from the aqueous phase (containing amines) with a polymeric support and implementing an interfacial polymerization reaction thereby. Bronsted acids, serving as a versatile mediator, can facilitate the amorphous-to-crystalline transformation, ensure the confined membrane growth at the interface and regulate the assembly behavior of COF subunits, and thus play a critical role in manipulating the microstructure evolution of COF-JLU2 membranes. More intriguingly, a correlation among membrane structures, separation performance and the partition coefficient (log P) of Bronsted acids was established. When log P lies in between 1.0 and 3.0, the COF membranes with continuous active layers, tunable thickness (50-400 nm) and small aperture size (0.49-0.51 nm) can be fabricated, achieving superior alc. dehydration performances to all the reported membrane counterparts. Our findings may stimulate further research on bottom-up construction of COF membranes and other kinds of organic framework membranes (XOF membranes). In the experiment, the researchers used many compounds, for example, 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde(cas: 34374-88-4Reference of 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde)
2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehyde(cas: 34374-88-4) is a member of phloroglucinol derivatives.Reference of 2,4,6-Trihydroxybenzene-1,3,5-tricarbaldehydePhloroglucinols are known for their broad-spectrum antiviral, antibacterial, antifungal, antihelminthic, and phytotoxic activities.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts