Kang, SW Kim, JH Ko, D Kim, CK Won, J Char, K Kang, YS 2024-01-21T06:31:02Z 2024-01-21T06:31:02Z 2021-09-01 2004-09-15 0887-6266 https://pubs.kist.re.kr/handle/201004/137228 The interaction of a phthalate group in poly(ethylene phthalate) (PEP) with silver ion has been elaborated in detail to understand the reduction behavior of silver ions to silver nanoparticles. Previously, the polymer electrolytes consisting of silver ions dissolved in PEP have shown highly stable separation performance for propylene/ propane mixtures primarily due to the retardation of the reduction reaction of silver ions to silver nanoparticles, which is possible by means of the chelating bonds between phthalate groups and silver ions. Thus, in this study, the interaction was systematically investigated by both the theoretical ab initio calculation and the experimental Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The results show that the interaction of silver ion with phthalate group in PEP is approximately two times stronger than that with other functional groups such as amide, ketone, and ester in various polymers, in which the latter ones show the rapid reduction reaction and consequently lose their olefin carrier activity with time. Therefore, it is concluded that the reduction reaction of silver ions to silver nanoparticles is retarded remarkably in PEP/silver salts systems primarily because of the strong interaction between the phthalate group in PEP and silver ion, and consequently the formation of silver nanoparticles would be effectively prohibited, as confirmed by transmission electron microscopy and ultraviolet-visible spectroscopy. (C) 2004 Wiley Periodicals, Inc. English WILEY FACILITATED OLEFIN TRANSPORT EFFECTIVE CORE POTENTIALS MOLECULAR CALCULATIONS POLYMER ELECTROLYTES MEMBRANES MECHANISM SALT PROPYLENE SORPTION Complexation of phthalate oxygens in poly(ethylene phthalate) with silver ions and its effect on the formation of silver nanoparticles Article 10.1002/polb.20196 1 JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, v.42, no.18, pp.3344 - 3350 JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 42 18 3344 3350 scie scopus 000223691800004 2-s2.0-4544371961 Polymer Science Polymer Science Article FACILITATED OLEFIN TRANSPORT EFFECTIVE CORE POTENTIALS MOLECULAR CALCULATIONS POLYMER ELECTROLYTES MEMBRANES MECHANISM SALT PROPYLENE SORPTION interaction structure phthalate oxygens silver nanoparticle membrane