Cyclopolymerization of 4,4-diphenoxy-1,6-heptadiyne by transition metal catalysts = 전이금속촉매에 의한 4,4-다이페녹시-1,6-헵타다이안의 고리화중합

4,4-diphenoxy-1,6-heptadiyne was prepared by a Grignard reagent of propargyl bromide with dichloro-diphenoxy methane. Polymerization was attempted by MoCl$_5$ and WCl$_6$ associated with coatalyst such as organotin and organoaluminium compounds. A moiybdenium catalyst was found to be a particularly effective catalyst for the cyclopolymerization of 4,4-diphenoxy- 1,6heptadiyne. Polymerization of 4,4-diphenoxy-1,6-heptadiyne by various catalysts leads to a violet solid ($\overline{Mn}=52000$), soluble in common organic solvents. The structure of polymer was identified by $^1$H-NMR, $^{13}$C-NMR, IR and UV-Vis spectroscopies. From these spectroscopic results, poly(DPHD)s possess polyene structures having cyclic recurring units in the polymer backbone. The poly(DPHD) has excellent properties in both the solubility in general organic solvent and the oxidation stability identified from IR spectra. The electrical conductivity is 10$^{-3}$s/cm for I$_2$ doping.
Advisors
Choi, Sam-Kwonresearcher최삼권researcher
Publisher
한국과학기술원
Issue Date
1990
Identifier
67097/325007 / 000881259
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 화학과, 1990.2, [ v, 42 p. ]

URI
http://hdl.handle.net/10203/32568
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=67097&flag=t
Appears in Collection
CH-Theses_Master(석사논문)
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