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Supramolecular architectures: macrocycles, catenanes and polyrotaxanes

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dc.contributor.authorLee, Sang-Hunen
dc.contributor.committeechairGibson, Harry W.en
dc.contributor.committeememberDorn, Harry C.en
dc.contributor.committeememberMarand, Herveen
dc.contributor.committeememberMerola, Joseph S.en
dc.contributor.committeememberTanko, James M.en
dc.contributor.departmentChemistryen
dc.date.accessioned2014-03-14T21:18:03Zen
dc.date.adate2007-08-23en
dc.date.available2014-03-14T21:18:03Zen
dc.date.issued1996-12-05en
dc.date.rdate2007-08-23en
dc.date.sdate2007-08-23en
dc.description.abstractPolyrotaxanes are molecular composites consisting of three components: linear polymers, bulky stoppers at the ends of polymer chains and macrocycles threaded by the polymers. A series of tetraarylmethyl derivatives as blocking groups were synthesized. Using tris(p-ten-butylphenyl)( 4-hydroxyphenyl)methane a new blocking groupfmitiator (BO(mit) was synthesized. The BG(mit's ability of blockingfmitiation in free radical polymerizations was established by polymerization of styrene. As cyclic components, aliphatic crown ethers (30-crown-lO, "42-crown-14" and "6O-crown-20") were synthesized by multi-piece combination methods. The purification of the crown ethers was achieved by treatment with poly(methacryloyl chloride), column chromatography and recrystallization; by NMR in DMSO-<i>d₆</i> the purity of the products was demonstrated. The 42-crown-based [2]catenane was isolated while synthesizing "42- crown-14" and characterized in terms of its physically interlocked structure. Two new hydrocarbon-based macrocycles were prepared by two-piece combination method.en
dc.description.degreePh. D.en
dc.format.extentxix, 312 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-08232007-112703en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08232007-112703/en
dc.identifier.urihttp://hdl.handle.net/10919/39211en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1996.L449.pdfen
dc.relation.isformatofOCLC# 36867254en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectpolymeren
dc.subjectpolyrotaxaneen
dc.subjectmacrocycleen
dc.subjectradical polymerizationen
dc.subjectcatenaneen
dc.subject.lccLD5655.V856 1996.L449en
dc.titleSupramolecular architectures: macrocycles, catenanes and polyrotaxanesen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineChemistryen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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