Rational design of epoxy/ ZIF-8 nanocomposites for enhanced suppression of copper ion migration. (15th August 2018)

• Record Type: Journal Article
• Authors: Lee, Seok Hwan; Seo, Heun Young; Yeom, Yong Sik; Kim, Jong Eun; An, Heseong; Lee, Jong-Suk; Jeong, Hae-Kwon; Baek, Kyung-Youl; Cho, Kie Yong; Yoon, Ho Gyu
• Is Part Of: Polymer. Volume 150(2018)
• Page Start: 159
• Page End: 168
• Publication Date: 2018-08-15
• Subjects: Epoxy nanocomposites -- ZIF-8 -- Copper migration suppression; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2018.05.062
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: Various failure modes derived from the electrochemical migration (ECM) through the dielectric polymer layers have been considered critical issues in the electronic devices. Herein, we for the first time suggested the rationally designed epoxy/zeolitic imidazolate framework-8 (ZIF-8) nanocomposite materials for efficient suppression of copper ion migration based on the plausible reaction mechanisms of metal metathesis addressed by sequential cleaving and ligating between metal ions (Zn 2+ and Cu 2+ ) and 2-methylimidazole (2-mim) ligands. The fabrication process for epoxy/ZIF-8 (EZ) nanocomposites was first examined to optimize the crosslinking system. The capability of the metal ion capture in the EZ nanocomposites was examined using the aqueous solution containing Cu 2+ ions. In addition, the ECM suppression properties were evaluated using the thermal humidity bias (THB) model testing. The representative model investigations with the EZ nanocomposites exhibited substantially enhanced copper ion adsorption and suppression of copper migration in comparison to those of epoxy. Hence, the EZ nanocomposites can be one promising material to alleviate the undesired ECM behavior in electronic device applications. Graphical abstract: Image 1 Highlights: Rational design of epoxy/ZIF-8 (EZ) nanocomposites was optimally fabricated. Acquired EZ nanocomposites exhibited the efficient metal ion capture. Electrochemcial migration behaviors were greatly suppressed by the EZ nanocomposites.