• Bulletin of the Korean Chemical Society
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• v.13 no.6
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• pp.625-627
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• 1992

This article deals with the synthesis and characterization of poly [N-(propargyloxy)phthalimide][poly (POPI)]. The polymerization of POPI was carried out by various transition metal catalysts. $MoCl_5$-based catalysts were found to be more effective than $WCl_6$-based catalysts. However, the polymer yield was relatively low (maximum 35%). The polymerization of POPI by $PdCl_2$ gave poly (POPI) in fair yields in DMF and pyridine. The resulting poly (POPI)s were mostly insoluble in organic solvents. The infrared spectrum of poly (POPI) showed no peak at 2135 $cm^{-1}$ due to acetylenic $C{\equiv}C$ stretching frequency. Instead, the carbon-carbon double bond stretching frequency was observed at 1600-1650 $cm^{-1}$. The TGA thermogram showed that the present poly (POPI) is thermally stable up to $160^{\circ}C.$.

• The Journal of the Convergence on Culture Technology
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• v.7 no.1
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• pp.317-326
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• 2021

The scientific culture programs of 13 Government-supported Research Institutes in the field of Science and Technology (GRIST) in Daedeok Innopolis are studied and classified according to the activities and operational types of programs conducted by GRIST over the past three years (2017~19). The total 150 scientific and cultural programs of GRIST were operational with annual average of 11.5 programs per institution. Science festival and field trip, as a scientific culture activity, account for 72%. By means of operational entity, the programs were identified as 68(45.3%) for PPOI(Programs Planned and Operated by Institute) and 82(54.7%) for PCPI(Programs Contributed and Participated by Institute). Also the 87.2% of all participants were elementary, middle, high school, and college students and the program for adult participants was none. From this study, we suggest that open lab type of science festival programs, which organized and operated by each GRIST, to inform ongoing and advanced research for public understand of research (PUR) and science concerts for targeting adult audiences.