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이산화탄소/프로필렌옥사이드 공중합 촉매의 음이온 변환
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 이분열 | - |
| dc.contributor.author | 유진아 | - |
| dc.date.accessioned | 2018-11-08T07:07:12Z | - |
| dc.date.available | 2018-11-08T07:07:12Z | - |
| dc.date.issued | 2010-02 | - |
| dc.identifier.other | 10404 | - |
| dc.identifier.uri | https://dspace.ajou.ac.kr/handle/2018.oak/4976 | - |
| dc.description | 학위논문(석사)--아주대학교 일반대학원 :분자과학기술학과,2010. 2 | - |
| dc.description.tableofcontents | 1. Introduction = 1 2. Result and Discussion =3 3. Summary = 18 4. Experiment Section = 20 5. Reference = 25 6. Figures = 28 | - |
| dc.language.iso | kor | - |
| dc.publisher | The Graduate School, Ajou University | - |
| dc.rights | 아주대학교 논문은 저작권에 의해 보호받습니다. | - |
| dc.title | 이산화탄소/프로필렌옥사이드 공중합 촉매의 음이온 변환 | - |
| dc.title.alternative | Yoo, Jina | - |
| dc.type | Thesis | - |
| dc.contributor.affiliation | 아주대학교 일반대학원 | - |
| dc.contributor.alternativeName | Yoo, Jina | - |
| dc.contributor.department | 일반대학원 분자과학기술학과 | - |
| dc.date.awarded | 2010. 2 | - |
| dc.description.degree | Master | - |
| dc.identifier.localId | 568568 | - |
| dc.identifier.url | http://dcoll.ajou.ac.kr:9080/dcollection/jsp/common/DcLoOrgPer.jsp?sItemId=000000010404 | - |
| dc.subject.keyword | 이산화탄소 | - |
| dc.subject.keyword | 폴리카보네이트 | - |
| dc.subject.keyword | 프로필렌옥사이드 | - |
| dc.description.alternativeAbstract | Anion exchange of BF4- occurs by stirring a cobalt(III) complex of Salen-type ligand tethered by four quaternary ammonium BF4- salts over a slurry of NaX in CH2Cl2, affording a complex containing four X's per cobalt (X = 2,4,5-trichlorophenolate, 6; X = 4-nitrophenolate, 10; X = 2,4-dichlorophenolate, 12). The 1H and 13C NMR spectra are in agreement with an unusual imine uncoordinated structure. The two Salen-phenoxys and the two X's persistently coordinate with cobalt(III) to form a square planar cobaltate complex while the other two X's scramble through coordinating and decoordinating to the axial sites of the square plane. Another form of the complex (X = 2,4,5-trichlorophenolate, 14; X = 4-nitrophenolate, 15; X = 2,4-dichlorophenolate, 16) is also prepared, in which the scrambling two X's in 6, 10, or 12 are replaced with the corresponding [X...H...X]- homoconjugate. These complexes, which adopt an unusual imine uncoordinated structure, are excellent catalysts for CO2/propylene oxide copolymerization (turnover frequency (TOF), 8300-16000 h-1). In all cases, the complex containing the homoconjugate [X...H...X]- shows higher activity than the corresponding phenol-free complex. Among the prepared complexes, 4-nitrophenol-4-nitrophenolate homoconjugate complex 15 showed the best performance (TOF, 16000 h-1; selectivity, 98%; Mn, 273000), allowing for replacement of the explosive 2,4-dinitrophenolate complex. | - |
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- Graduate School of Ajou University > Department of Molecular Science and Technology > 3. Theses(Master)
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