{"381201":{"#nid":"381201","#data":{"type":"event","title":"PhD Proposal: Yanjie He","body":[{"value":"\u003Cp\u003E\u003Cstrong\u003EMSE PhD Proposal: Yanjie He\u003C\/strong\u003E\u003Cbr \/\u003EDate: Friday, Feb 27,2015\u003Cbr \/\u003ELocation: Love, room 210\u003Cbr \/\u003ETime: 01:00 PM\u003Cbr \/\u003E\u003Cbr \/\u003E\u003Cstrong\u003ECommittee Members\u003C\/strong\u003E\u003Cbr \/\u003EProf. Lin, Zhiqun (Advisor, MSE)\u003Cbr \/\u003EProf. Dong Qin (MSE)\u003Cbr \/\u003EProf. Vladimir Tsukruk (MSE)\u003Cbr \/\u003EProf. Meisha Shofner (MSE)\u003Cbr \/\u003EProf. Yuling Deng (ChemE)\u003Cbr \/\u003E\u003Cbr \/\u003ETitle:\u003Cstrong\u003E Nanostructured Materials with Well-Controlled Dimensions, \u003C\/strong\u003E\u003Cbr \/\u003E\u003Cstrong\u003ECompositions and Architectures via Precise Molecular Design and Their \u003C\/strong\u003E\u003Cbr \/\u003E\u003Cstrong\u003EApplications in Energy Harvesting\u003C\/strong\u003E\u003Cbr \/\u003E\u003Cbr \/\u003E\u003Cstrong\u003EAbstract\u003C\/strong\u003E\u003Cbr \/\u003E\u003Cbr \/\u003EStar-like and bottlebrush-like copolymers composed of distinct polymeric \u003Cbr \/\u003Eblocks offer versatile and robust strategies for producing nanostructured \u003Cbr \/\u003Ematerials with complex morphologies which cannot be synthesized through \u003Cbr \/\u003Econventional methods. The resulting organic-inorganic nanocomposites \u003Cbr \/\u003Econsisting of functional polymers and nanostructured inorganic materials \u003Cbr \/\u003Eprovide a vast design space of potential material properties, depending \u003Cbr \/\u003Eheavily on the properties of these two components and their spatial \u003Cbr \/\u003Earrangement. The ability to place polymers in intimate contact with \u003Cbr \/\u003Efunctional nanoparticles, that is, stable chemical interaction without the \u003Cbr \/\u003Edissociation of surface capping polymers, provides a means of preventing \u003Cbr \/\u003Enanoparticles from aggregation and increasing their dispersibility in \u003Cbr \/\u003Enanocomposites, and promises opportunities to explore new properties and \u003Cbr \/\u003Econstruct miniaturized devices. However, this is still a challenging issue \u003Cbr \/\u003Eand has not yet been largely explored.\u003Cbr \/\u003E\u0026nbsp;In this proposal, we aim to develop an unconventional strategy to first \u003Cbr \/\u003Ecraft hollow lead telluride (PbTe) nanoparticles with varied size and shell \u003Cbr \/\u003Ethickness by using star-like triblock copolymers PS-b-PAA-b-PS as \u003Cbr \/\u003Enanoreactors, which are expected to exhibit enhanced thermoelectric \u003Cbr \/\u003Eproperties due to preferential scattering of phonon without suppressing \u003Cbr \/\u003Etransport of electrons. Based on such a similar rationale, we have proposed \u003Cbr \/\u003Eanother means of in-situ crafting organic-inorganic nanocomposites \u003Cbr \/\u003Ecomprising monodisperse thermoelectric PbTe nanoparticles or nanorods \u003Cbr \/\u003Eintimately and permanently tethered with thermoelectric poly(3 \u003Cbr \/\u003E4-ethylenedioxythiophene) (PEDOT) (i.e., PEDOT-PbTe) by capitalizing on \u003Cbr \/\u003Erationally designed amphiphilic nonlinear block copolymer poly(acrylic \u003Cbr \/\u003Eacid)-block- poly(3 4-ethylenedioxythiophene) (PAA-b-PEDOT) as nanoreactors. \u003Cbr \/\u003EFurthermore, we have exploited the nanoreactor strategy noted above to \u003Cbr \/\u003Ecreate polystyrene-capped magnetoelectric BaTiO3\/CoFe2O4 core\/shell \u003Cbr \/\u003Enanocrystals by capitalizing on star-like poly(4-vinyl pyridine)-b-poly(tert \u003Cbr \/\u003Ebutyl acrylate)-b-polystyrene (P4VP-b-PtBA-b-PS) triblock copolymers as \u003Cbr \/\u003Etemplate. The intimate and permanent PS capping on the surface core\/shell \u003Cbr \/\u003Enanocrystals will facilitate the selective incorporation of these \u003Cbr \/\u003Enanoparticles into PS nanodomains in PS-b-PMMA diblock copolymer during the \u003Cbr \/\u003Eco-assembly of BaTiO3\/CoFe2O4 core\/shell nanocrystals and PS-b-PMMA thin \u003Cbr \/\u003Efilm, thereby leading to the formation of nanocomposites with hierarchical \u003Cbr \/\u003Edistribution of ME nanoparticles in diblock copolymer matrix. In addition, \u003Cbr \/\u003Ewe further extend polymeric nanoreactor strategy to produce hollow \u003Cbr \/\u003Econjugated polymeric nanoparticles and nanotubes. Such bottom-up crafting of \u003Cbr \/\u003Eintimate organic-inorganic nanocomposites offers new levels of tailorability \u003Cbr \/\u003Eto nanostructured materials for achieving exquisite control over the surface \u003Cbr \/\u003Echemistry and properties of nanocomposites with engineered functionality for \u003Cbr \/\u003Ediverse applications in energy conversion and storage, catalysis, \u003Cbr \/\u003Eelectronics, nanotechnology, and biotechnology.\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":[{"value":"Nanostructured Materials with Well-Controlled Dimensions, Compositions and Architectures via Precise Molecular Design and Their Applications in Energy Harvesting"}],"uid":"27707","created_gmt":"2015-02-23 15:44:41","changed_gmt":"2016-10-08 01:48:19","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2015-02-27T12:00:00-05:00","event_time_end":"2015-02-27T14:00:00-05:00","event_time_end_last":"2015-02-27T14:00:00-05:00","gmt_time_start":"2015-02-27 17:00:00","gmt_time_end":"2015-02-27 19:00:00","gmt_time_end_last":"2015-02-27 19:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"1366","name":"defense"},{"id":"1808","name":"graduate students"},{"id":"10774","name":"MSE"},{"id":"913","name":"PhD"},{"id":"119461","name":"propsal"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}