The incorporation of phosphine or amine structural units into dendritic polymers offer significant potential in building macromolecular species with desired properties for heterogenizing homogeneous catalysis. To this end, synthetic methodologies based on the chemistry of acid-base hydrolysis of aminosilanes with molecules possessing hydroxyl end groups, and that of phosphorus halides/amides with alkynyl/alcohol monomers were explored as approaches to construct phosphorus(III)- and nitrogen-containing dendritic polymers. Attempted implementation of a three-step, divergent synthetic methodology led to the discovery of two new phosphorus(III)-based compounds, P[O(CH2) 2C≡CH]3 and P[O(CH2)2C≡CSn(CH 3)3]3. Efforts to execute a two-step, divergent synthetic route to nitrogen-containing dendrimers afforded first- and second-generation dendrimers, N4 and N10. Attempts to adapt this methodology to one-pot procedures for hyperbranched polyamines show promise. Finally, single-step and pseudo-single-step procedures for synthesizing hyperbranched polyphosphines were employed in the preparation of several phosphorus(III)-containing macromolecules. These materials were successfully functionalized with Rh(I) organometallic complexes.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.31216 |
| Date | January 2001 |
| Creators | Dasgupta, Mohua. |
| Contributors | Kakkar, Ashok K. (advisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science (Department of Chemistry.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001811007, proquestno: MQ70408, Theses scanned by UMI/ProQuest. |
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