Seminar

Seminar

[세미나 공지] - 2014년 4월 3일(목)

  • POSTED DATE : 2014-04-03
  • WRITER : 관리자
  • HIT : 2434
  • DATE : 2014-04-03
  • PLACE : 330226호실

이번주 목요일(4월3일)에 세미나가 개최됩니다.

많은 참석 부탁드립니다.
감사합니다.

 

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제  목 : The Excited-States Dynamics of  Single-Walled Carbon Nanotubes  Wrapped by Ionic Conjugated Polymers

 

연  사 : 박재홍 교수(National Renewable Energy Laboratory (NREL), Chemical and Materials Science Center)
 

일  시 : 2014년 4월 3일(목) 오후 4시 30분


장  소 : 화학관 세미나실 (330226호실)

 

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The Excited-States Dynamics of Single-Walled Carbon Nanotubes Wrapped by Ionic Conjugated Polymers

 

Park, Jaehong

National Renewable Energy Laboratory (NREL),

Chemical and Materials Science Center

 

 

Rationally designed, highly charged polymers are used to effectively wrap and disperse single-walled carbon nanotubes (SWNTs) in solution. When applied to samples of SWNTs that are enriched in a single chirality, the resulting polymer-wrapped SWNT hybrids are used to investigate previously unidentified carbon nanotube excited states and the potential of these supramolecular assemblies for light-to-fuel energy conversion reactions. Highlights include femtosecond pump-probe transient absorption spectroscopic experiments that identify, for the first time, microsecond-lived SWNT intrinsic excited-state as a function of local dielectric environment and dispersing agents, and demonstrate photoinduced electron transfer dynamics between a SWNT and a semiconducting polymer where we fully characterize the charge-separated products, and the dynamics of charge separation and recombination.