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	Multi-fluorous-included Counter Anions-based Ionic Copolymers: Synthesis and Enhanced Hydrophobic Adsorption Films on Copper Surface for Super Protection
	Ren Weihua1; Shi Yueting1; Chen Lingli1; Yang Song1; Zhang Shengtao1; Liu Xiaohong2,3; Ren Xiaolei1,4; Li Hongru1
	2022-11-11
摘要	Three multi-fluorous-carried anions-based ionic copolymers (ICs) including (fluorosulfonyl)imide(FSI-), (trifluoromethanesulfonyl)imide(TFSI-) and hexafluorophosphate anions(PF6-) (IC[FSI-]; poly[1,1'-(butane-1,4-diyl)bis(3-pentyl-1H-imidazol-3-ium) bis(fluorosulfonyl)amide](IC[TFSI-]), poly{1,1'-(butane-1,4-diyl)bis(3-pentyl-1H-imidazol-3-ium) bis[(trifluoromethyl)sulfonyl]-amide}(IC[PF6(-)]), poly[1,1'-(butane-1,4-diyl)bis(3-pentyl-1H-imidazol-3-ium) bishexafluorophosphate] were synthesized with a simple ionic exchange method by using amphiphilic poly[1,1'-(butane-1,4-diyl)bis(3-pentyl-1H-imidazol-3-ium) bisbromide] (IC[Br-]) as the intermediate ionic polymer. The chemical srutrcures of the target ICs were characterized by nuclear magnetic resonance (NMR) spectroscopy and Fourier-transform infrared spectroscopy (FTIR). It is shown that the target ICs could be spontaneously adsorbed on copper surface in N,N-dimethflormamide(DMF), and the tight adsorption films were formed on metal surface. The contacting angles suggest that the formed adsorption layers of target ICs on copper surface were characterized with hydrophobic nature. Furthermore, the target ICs-copper chemistry bonding was confirmed by various means. The electrochemistry analysis showed that the target ICs adsorption layers could prevent from copper corrosion in H2SO4 solution efficiently, and the maximal anticorrosion efficiency was over 95% at 0.100 g/L. In particular, the target ICs showed 85% or above anticorrosion efficiency for copper at a low concentration of 0.025 g/L, which was greater than the intermediate polymer IC[Br-]. In addition, an insight of mixed chemisorption and physisorption of the target ICs on metal surface was analyzed and discussed.
关键词	Hydrophobic adsorption film Ionic copolymer Multifluorous-included anion Copper Anticorrosion
DOI	10.1007/s40242-022-2276-6
发表期刊	CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
ISSN	1005-9040
页码	12
通讯作者	Liu Xiaohong(lxhsuda@163.com) ; Ren Xiaolei(xlren1990@163.com) ; Li Hongru(hrli@cqu.edu.cn)
收录类别	SCI
WOS记录号	WOS:000881747800001
语种	英语