“The polymeric upper bound for N2/NF3 separation and beyond; ZIF-8 containing mixed matrix membranes” by Sunghwan Park, Woo Ram Kang, Hyuk Taek Kwon, Soobin Kim, Myungeun Seo, Joona Bang, Sang hyup Lee, Hae Kwon Jeong and Jong Suk Lee was published in Journal of Membrane Science.
Link: http://www.sciencedirect.com/science/article/pii/S0376738815002082