Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Seongyoung Choi"'
Autor:
Whangi Kim, Youngdon Lim, Seongyoung Choi, Younggil Cho, Soonho Lee, Jinseong Lim, Md. Awlad Hossain, Hohyoun Jang
Publikováno v:
Renewable Energy. 79:85-90
A series of phenylene based polyelectrolytes were synthesized from 2,2′-biphenol, biphenyl and isatin by superacid catalyzed polyhydroxyalkylation reactions. Grafted sulfonated polymers were synthesized by substitution reaction with 3-bromopropane
Autor:
Whangi Kim, Youngdon Lim, Sang Young Lee, Taehoon Hong, Hohyoun Jang, Seongyoung Choi, Dong-Hoon Lee, Soonho Lee
Publikováno v:
International Journal of Hydrogen Energy. 39:21531-21537
The synthesis of conjugated polyphenylenes containing tetraphenylethylene (PPTPE) moiety, their functionalization with sulfonic acid groups, and the measurement of apposite parameters for PEMs are described. The polymers were prepared by Ni-catalyzed
Autor:
Awlad Hossain, Soonho Lee, Hyunchel Ju, Whangi Kim, Youngdon Lim, Hohyoun Jang, Tae-Whan Hong, Hyunho Joo, Seongyoung Choi
Publikováno v:
International Journal of Hydrogen Energy. 39:16493-16499
The synthesis of polyphenylenes containing fluorine moiety (PPTF), their functionalization with sulfonic acid groups, and the measurement of apposite parameters for PEMs are described. The polymers were prepared by Ni-catalyzed carbon–carbon coupli
Autor:
Md. Awlad Hossain, Soonho Lee, Whan Gi Kim, Hyunchul Ju, Seongyoung Choi, Youngdon Lim, Youngtae Jeon, Sang Young Lee, Hohyoun Jang
Publikováno v:
Solid State Ionics. 262:754-760
Anion exchange membranes of poly(tetra phenyl ether sulfone) containing hexa-imidazolium hydroxides on the hydrophilic segment of a polymer unit were synthesized by sequential polycondensation, chloromethylation, substitution with 1-methylimidazolium
Autor:
Md. Awlad Hossain, Jinseong Lim, Whangi Kim, Seongyoung Choi, Youngtae Jeon, Youngdon Lim, Soonho Lee, Hohyoun Jang
Publikováno v:
International Journal of Hydrogen Energy. 39:2731-2739
A series of modified anion conductive block poly(arylene ether sulfone) copolymer membranes containing a selective substituted unit, 15%, 20% and 25% 4,4′-(2,2-diphenylethenylidene) diphenol, were prepared for use in alkaline fuel cells. The anion
Autor:
Whan Gi Kim, Taehoon Hong, Youngdon Lim, Lei Jin, Md. Awlad Hossain, Seongyoung Choi, Soonho Lee, Hohyoun Jang
Publikováno v:
Reactive and Functional Polymers. 73:1299-1305
Anion exchange membranes of poly(fluorenylene ether sulfone) containing imidazolium hydroxide-functionalized fluorenyl groups were synthesized by sequential polycondensation, chloromethylation, substitution with imidazolium and ion exchange. They sho
Autor:
Sang Young Lee, Lei Jin, Fei Tan, Dong-Wan Seo, Seongyoung Choi, Soonho Lee, Whangi Kim, Youngdon Lim
Publikováno v:
Electronic Materials Letters. 10:205-207
Novel sulfonated poly(ether sulfone ketone)s containing mesonaphthobifluorene (MNF) moiety were synthesized and their properties characterized. The prepared polymers had a partial graphene structure due to the MNF group. Poly(ether sulfone ketone)s b
Autor:
Md. Awlad Hossain, Soonho Lee, Younggil Cho, Hohyoun Jang, Jinseong Lim, Seongyoung Choi, Whangi Kim, Youngdon Lim
Publikováno v:
2014 5th International Renewable Energy Congress (IREC).
The novel sulfonated poly(ether sulfone)s containing hexabenzocoronene moiety that is partial graphene structure (SPGHPs) for polymer electrolyte membrane were synthesized and characterized their properties. Graphene is an allotrope of carbon and one
Autor:
Youngdon Lim1, Soonho Lee1, Hohyoun Jang1, Hossain, Md. Awlad1, Seongyoung Choi1, Younggil Cho1, Jinseong Lim1, Whangi Kim1 wgkim@kku.ac.kr
Publikováno v:
Renewable Energy: An International Journal. Jul2015, Vol. 79, p85-90. 6p.