Comparative investigation of energy relaxation dynamics of gold nanoparticles and gold-polypyrrole encapsulated nanoparticles

Hyun Jong Shin, In Wook Hwang, Young Nam Hwang, Dongho Kim, Seon Hee Han, Jae Suk Lee, Gyoujin Cho

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

We report the femtosecond transient absorption dynamics of the gold and gold-polypyrrole nanoparticles by photoexcitation at various wavelengths. The bleach recovery dynamics of the surface plasmon band for the gold and gold-polypyrrole nanoparticles exhibit different responses to the pump beam energy and intensity in thermal energy transfer from the gold nanoparticles to the surrounding medium or embedding material. This indicates that directly attached polypyrroles provide fast thermal energy transfer pathways for the core gold nanoparticles.

Original languageEnglish
Pages (from-to)4699-4704
Number of pages6
JournalJournal of Physical Chemistry B
Volume107
Issue number20
DOIs
Publication statusPublished - 2003 May 22

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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