{"@context":"http://iiif.io/api/presentation/2/context.json","@id":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/manifest.json","@type":"sc:Manifest","label":"Alkyne Functional Block Copolymers as Precursors to Cobalt Nanoparticles","metadata":[{"label":"dc.description.sponsorship","value":"This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree."},{"label":"dc.format","value":"Monograph"},{"label":"dc.format.medium","value":"Electronic Resource"},{"label":"dc.identifier.uri","value":"http://hdl.handle.net/11401/71675"},{"label":"dc.language.iso","value":"en_US"},{"label":"dc.publisher","value":"The Graduate School, Stony Brook University: Stony Brook, NY."},{"label":"dcterms.abstract","value":"Block copolymers are those that contain two or more homopolymer units connected together on a single chain.  They are of great interest for their ability to phase-separate and form highly ordered structures on the nanometer scale.  Amphiphilic block copolymers contain hydrophobic and hydrophilic blocks which allow them to self-assemble in aqueous solution, which has potential for various medical applications.   Functionalized block copolymers also have potential to form metal-polymer hybrid materials that can self-assemble and form highly-ordered nanostructures, which may be useful for technological applications.  In this work, alkyne-functional block copolymers were synthesized and used to create cobalt-copolymer composites. ABA triblock copolymer poly[4-(phenylethynyl)styrene]-b-poly(ethylene oxide)-b-poly[4-(phenylethynyl)styrene] was synthesized at a variety of molecular weights by atom transfer radical polymerization (ATRP) of 4-PES onto a difunctional poly(ethylene oxide) macroinitiator  (PEO, M<sub>n</sub>=~10,000 g/mol).  AB diblock copolymers poly(ethylene oxide)-b-poly[4-(phenylethynyl)styrene] and polystyrene-b-poly[4-(phenylethynyl)styrene] were synthesized at a variety of molecular weights by ATRP of 4-PES onto monofunctional PEO and polystyrene (PS)  macroinitiators (PEO M<sub>n</sub>=~5,000 g/mol; PS M<sub>n</sub>=~4400 g/mol).  Copolymer products were analyzed by <super>1</super>H NMR spectroscopy and gel permeation chromatography (GPC).  Polydispersities of diblock copolymers were fairly narrow (1.10-1.25), indicating well controlled polymerizations.   Copolymer samples were treated with Co<sub>2</sub>(CO)<sub>8</sub> in solution to form cobalt-functional block copolymers. Transmission electron microscopy was used to investigate the structural properties of the cobalt composite of triblock copolymer PPES<sub>55</sub>-PEO<sub>227</sub>-PPES<sub>55</sub>, and showed spherical structures 15-40 nm in diameter."},{"label":"dcterms.available","value":"2015-04-24T14:48:29Z"},{"label":"dcterms.contributor","value":"Robert B. Grubbs.  Benjamin Chu."},{"label":"dcterms.creator","value":"Raphaely, Daniel"},{"label":"dcterms.dateAccepted","value":"2012-05-17T12:21:52Z"},{"label":"dcterms.dateSubmitted","value":"2015-04-24T14:48:29Z"},{"label":"dcterms.description","value":"Department of Chemistry"},{"label":"dcterms.format","value":"Monograph"},{"label":"dcterms.identifier","value":"Raphaely_grad.sunysb_0771M_10504.pdf"},{"label":"dcterms.issued","value":"2011-05-01"},{"label":"dcterms.language","value":"en_US"},{"label":"dcterms.provenance","value":"Made available in DSpace on 2012-05-17T12:21:52Z (GMT). No. of bitstreams: 1\nRaphaely_grad.sunysb_0771M_10504.pdf: 16575408 bytes, checksum: 7c9bba675fd6945ec1a51bb66499fb35 (MD5)\n  Previous issue date:    1"},{"label":"dcterms.publisher","value":"The Graduate School, Stony Brook University: Stony Brook, NY."},{"label":"dcterms.subject","value":"Polymer Chemistry -- Organic Chemistry"},{"label":"dcterms.title","value":"Alkyne Functional Block Copolymers as Precursors to Cobalt Nanoparticles"},{"label":"dcterms.type","value":"Thesis"},{"label":"dc.type","value":"Thesis"}],"description":"This manifest was generated dynamically","viewingDirection":"left-to-right","sequences":[{"@type":"sc:Sequence","canvases":[{"@id":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/canvas/page-1.json","@type":"sc:Canvas","label":"Page 1","height":1650,"width":1275,"images":[{"@type":"oa:Annotation","motivation":"sc:painting","resource":{"@id":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/86%2F99%2F47%2F86994784313305562009873642533424309966/full/full/0/default.jpg","@type":"dctypes:Image","format":"image/jpeg","height":1650,"width":1275,"service":{"@context":"http://iiif.io/api/image/2/context.json","@id":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/86%2F99%2F47%2F86994784313305562009873642533424309966","profile":"http://iiif.io/api/image/2/level2.json"}},"on":"https://repo.library.stonybrook.edu/cantaloupe/iiif/2/canvas/page-1.json"}]}]}]}