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

doi:10.1021/jp022055o

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

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

20 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 language	English
Pages (from-to)	4699-4704
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	107
Issue number	20
DOIs	https://doi.org/10.1021/jp022055o
Publication status	Published - 2003 May 22

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1021/jp022055o

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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.",

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AU - Shin, Hyun Jong

AU - Hwang, In Wook

AU - Hwang, Young Nam

AU - Kim, Dongho

AU - Han, Seon Hee

AU - Lee, Jae Suk

AU - Cho, Gyoujin

PY - 2003/5/22

Y1 - 2003/5/22

N2 - 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.

AB - 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.

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JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 20

ER -

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

Abstract

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