【學(xué)術(shù)報(bào)告】Diversifying?Polymer?Properties?through?Precision??Microstructure?Engineering
日期：2024-07-18
閱讀：7046
主題：Diversifying?Polymer?Properties?through?Precision??Microstructure?Engineering
報(bào)告人：Mingjiang?Zhong
時(shí)間：2024年7月18日（周四）10:00-12:00
地點(diǎn)：霞光樓220會(huì)議室
邀請(qǐng)人：張紹東 教授
個(gè)人簡(jiǎn)介
Mingjiang?Zhong?is?an?associate?professor?of?chemical?&?environmental?engineering?and?of?chemistry?at?Yale?University.?He?holds?a?BS?from?Peking?University?in?China?and?a?MS?and?PhD?from?Carnegie?Mellon?University.?Before?his?current?position,?Zhong?was?a?postdoctoral?scholar?at?Massachusetts?Institute?of?Technology.?His?lab?uses?interdisciplinary?applications?of?polymer?science?and?engineering,?synthetic?and?physical?materials?chemistry,?and?catalysis?to?address?challenges?in?global?health?and?sustainability.?Zhong?received?US?National?Science?Foundation?CAREER?Award,?Camille?Dreyfus?Teacher-Scholar?Award,?and?3M?Non-Tenured?Faculty?Award?and?was?named?an?ACS?PMSE?Young?Investigator.
講座摘要
The?material?properties?of?polymers?are?strongly?influenced?by?their?microstructures,?such?as?monomer?sequence,?architecture,?and?tacticity.?This?presentation?introduces?various?precision?synthesis?methods?to?access?microstructure-engineered?homopolymers?and?copolymers?with?diversified?properties.?The?presenter?will?first?report?the?recent?progress?in?his?research?group?on?the?controlled?synthesis?and?characterization?of?multicomponent?bottlebrush?block?copolymers?containing?sequence-defined?side?chains.?Hierarchically?assembled?nanostructures?were?constructed?with?broadly?tunable?characteristic?lengths.?The?concept?of?precision?synthesis?will?then?be?extended?to?the?preparation?of?(hyper)branched?polymers?in?the?second?part?of?the?presentation.?A?site-specifically?initiated?living?branching?polymerization?with?controlled?degree?of?branching?was?realized?through?a?polymerization-induced?radical?generation?process.?Kinetic?modeling?and?mechanistic?studies?were?carried?out?to?enhance?the?scalability?and?versatility?of?the?branching?polymerization.?Finally,?a?bimetallic?molecular?catalyst?used?for?stereocontrolled?living?radical?polymerization?will?be?introduced.?The?impact?of?backbone?stereoregularity?on?the?thermomechanical?and?thermo-responsive?properties?of?the?prepared?polymers?will?be?discussed.
