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Preparation of "Constrained Geometry" Titanium Complexes of [1,2]Azasilinane Framework for Olefin Polymerization
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.advisor | 이분열 | - |
| dc.contributor.author | 이슬 | - |
| dc.date.accessioned | 2018-11-08T08:10:59Z | - |
| dc.date.available | 2018-11-08T08:10:59Z | - |
| dc.date.issued | 2017-02 | - |
| dc.identifier.other | 24929 | - |
| dc.identifier.uri | https://dspace.ajou.ac.kr/handle/2018.oak/11299 | - |
| dc.description | 학위논문(석사)--아주대학교 일반대학원 :분자과학기술학과,2017. 2 | - |
| dc.description.tableofcontents | 1. Introduction 2. Results and Discussion 2.1 Synthesis and Characterization 2.2 Polymerization study 3. Conclusion 4. Experimental Section 4.1 General remarks. 4.2 Synthesis of Compound 3-18 4.3 Ethylene/1-Octene copolymerization 5. Acknowledgements 6. Notes and References 7. Supporting Information | - |
| dc.language.iso | eng | - |
| dc.publisher | The Graduate School, Ajou University | - |
| dc.rights | 아주대학교 논문은 저작권에 의해 보호받습니다. | - |
| dc.title | Preparation of "Constrained Geometry" Titanium Complexes of [1,2]Azasilinane Framework for Olefin Polymerization | - |
| dc.type | Thesis | - |
| dc.contributor.affiliation | 아주대학교 일반대학원 | - |
| dc.contributor.alternativeName | Seul Lee | - |
| dc.contributor.department | 일반대학원 분자과학기술학과 | - |
| dc.date.awarded | 2017. 2 | - |
| dc.description.degree | Master | - |
| dc.identifier.localId | 770262 | - |
| dc.identifier.url | http://dcoll.ajou.ac.kr:9080/dcollection/jsp/common/DcLoOrgPer.jsp?sItemId=000000024929 | - |
| dc.subject.keyword | Copolymerization | - |
| dc.subject.keyword | Ethylene | - |
| dc.subject.keyword | Titianium catalyst | - |
| dc.description.alternativeAbstract | The Me2Si-bridged ansa-Cp/amido half-metallocene, [Me2Si(n5-Me4C5)(NtBu)]TiCl2, termed a "constrained-geometry catalyst (CGC)", is a representative homogeneous Ziegler catalyst. CGC derivatives with the [1,2]azasilinane framework, in which the amide alkyl substituent is joined by the Si-bridge, were prepared, and the catalytic performances of these species was studied. Me4C5H-Si(Me)(CH2CH=CH2)-NH(C(R)(R')CH=CH2) (R, R' = H or methyl; Me4C5H = tetramethylcyclopentadienyl) was susceptible to ring closure metathesis (RCM) when treated with Schrock's Mo-catalyst to afford -Si(Me4C5H)(Me)CH2CH=CHC(R)(R')NH- containing a six-membered ring framework. Using the precursors and the products of RCM, various CGC derivatives, i.e., [-Si(5-Me4C5)(Me)CH2CH=CHC(R)(H)N-]TiMe2 (13, R = H; 15, R = Me), [-Si(n5-Me4C5)(Me)CH2CH2CH2CH2N]TiMe2 (14), [(n5-Me4C5)Si(Me)(CH2CH=CH2)NCH2CH=CH2]TiMe2 (16), [(n5-Me4C5)Si(Me)(CH=CH2)NCH2CH=CH2]TiMe2 (17), and [(n5-Me4C5)Si(Me)(CH2CH3)NCH2CH2CH3]TiMe2 (18), were prepared. The catalytic activity of the newly prepared complexes was lower than that of CGC when activated with [Ph3C][B(C6F5)4]/iBu3Al. However, the catalytic activity of these species was improved by using tetrabutylaluminoxane ([iBu2Al]2O) instead of iBu3Al and the activity of 14/[Ph3C][B(C6F5)4]/[iBu2Al]2O was comparable to that of CGC/[Ph3C][B(C6F5)4]/iBu3Al (94 and 99 x 10^6 g/molTi·h, respectively). Advantageously, the newly prepared complexes produced higher molecular weight poly(ethylene-co-1-octene)s than CGC. | - |
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- Graduate School of Ajou University > Department of Molecular Science and Technology > 3. Theses(Master)
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