Neither Fluorocarbons nor Silicones:Hydrocarbon-Based Water-Borne Healable Supramolecular Elastomer with Unprecedent Dual Resistance to Water and Organic Solvents  

作　　者：Shuitao Gao Shasha Jiang Jinwan Qi Tongyue Wu Wenkai Wang Zhijie Liu Bin Zhang Jianbin Huang Yun Yan 

机构地区：[1]College of Chemistry and Molecular Engineering,Peking University,Beijing 100871 [2]Beijing National Laboratory for Molecular Sciences(BNLMS),Beijing 100190

出　　处：《CCS Chemistry》2022年第12期3724-3734,共11页中国化学会会刊（英文）

基　　金：This work was financially supported by the National Natural Science Foundation of China(grant nos.NSFC 22172004 and 21972003)and the Beijing National Laboratory for Molecular Sciences(BNLMS)for financial support.

摘　　要：Except for fluorocarbons and silicones,few artificial materials display both water and organic solvent resistance.Herein,we report an artificial hydrocarbonbased supramolecular elastomer that displays unprecedented dual resistance to both water and organic solvents.This elastomer is formed in water with two water soluble components,folic acid(FA)and branched poly(ethylene imine)(b-PEI).The hydrogen bonding between the two components occurs immediately,which further promotes the hydrogen bonding between the FA,yielding folate quartets and theirπ-πstacking.These multiple noncovalent interactions work synergistically,leading to a hydrophobic,transparent,stretchable,healable,notchinsensitive,and recyclable elastomer that resists both water and organic solvents.The elastomer remains intact after storage in high humidity and organic solvents for months.Films generated by stretching the elastomer are very hydrophobic,and the contact angle of water on the elastomer is up to 112.3°.The damaged elastomers also exhibit water-assisted healable behavior.This work discloses a new paradigm of material synthesis that can inspire the fabrication of robust nonfluorocarbon and silicone-based materials with green strategies.

关 键 词：folic acid ELASTOMER QUARTETS π-πstacking hydrogen bonding 

分 类 号：O62[理学—有机化学]