Excitation dynamics in anisotropic nanostructures of star-shaped CdS

Weon Sik Chae, Hee Won Shin, Eun Seok Lee, Eun Jeong Shin, Jin Seung Jung, Yong Rok Kim

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Unique starlike CdS particles were prepared from the lyotropic triblock copolymer solution system. The starlike CdS consists of a spherical core and dozens of the attached conical nanolobes. From the comparative studies with the spherical and rod-shaped CdS nanoparticles, the unique photophysical property is presented for the starlike CdS particle. The experimental results suggest that the photogenerated charge carriers at the tip-edge region of the conical nanolobe in the starlike CdS system diffuse into the thicker inner part including the core region, which is possibly due to the decreasing excited state potential gradient from the tip edge to the thicker inner part. This type of charge carrier diffusion dynamics from the surrounding to the thicker inner part in this anisotropic morphology of the starlike CdS semiconductor closely resembles the energy transfer dynamics in the organic dendrimers.

Original languageEnglish
Pages (from-to)6204-6209
Number of pages6
JournalJournal of Physical Chemistry B
Volume109
Issue number13
DOIs
Publication statusPublished - 2005 Apr 7

Fingerprint

Charge carriers
Stars
charge carriers
Nanostructures
Dendrimers
stars
potential gradients
dendrimers
Excited states
Energy transfer
Block copolymers
excitation
copolymers
rods
energy transfer
Semiconductor materials
Nanoparticles
nanoparticles

All Science Journal Classification (ASJC) codes

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

Cite this

Chae, Weon Sik ; Shin, Hee Won ; Lee, Eun Seok ; Shin, Eun Jeong ; Jung, Jin Seung ; Kim, Yong Rok. / Excitation dynamics in anisotropic nanostructures of star-shaped CdS. In: Journal of Physical Chemistry B. 2005 ; Vol. 109, No. 13. pp. 6204-6209.
@article{288bd7e31df246e8a8a1f2d4e2498610,
title = "Excitation dynamics in anisotropic nanostructures of star-shaped CdS",
abstract = "Unique starlike CdS particles were prepared from the lyotropic triblock copolymer solution system. The starlike CdS consists of a spherical core and dozens of the attached conical nanolobes. From the comparative studies with the spherical and rod-shaped CdS nanoparticles, the unique photophysical property is presented for the starlike CdS particle. The experimental results suggest that the photogenerated charge carriers at the tip-edge region of the conical nanolobe in the starlike CdS system diffuse into the thicker inner part including the core region, which is possibly due to the decreasing excited state potential gradient from the tip edge to the thicker inner part. This type of charge carrier diffusion dynamics from the surrounding to the thicker inner part in this anisotropic morphology of the starlike CdS semiconductor closely resembles the energy transfer dynamics in the organic dendrimers.",
author = "Chae, {Weon Sik} and Shin, {Hee Won} and Lee, {Eun Seok} and Shin, {Eun Jeong} and Jung, {Jin Seung} and Kim, {Yong Rok}",
year = "2005",
month = "4",
day = "7",
doi = "10.1021/jp044402v",
language = "English",
volume = "109",
pages = "6204--6209",
journal = "Journal of Physical Chemistry B",
issn = "1520-6106",
number = "13",

}

Excitation dynamics in anisotropic nanostructures of star-shaped CdS. / Chae, Weon Sik; Shin, Hee Won; Lee, Eun Seok; Shin, Eun Jeong; Jung, Jin Seung; Kim, Yong Rok.

In: Journal of Physical Chemistry B, Vol. 109, No. 13, 07.04.2005, p. 6204-6209.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Excitation dynamics in anisotropic nanostructures of star-shaped CdS

AU - Chae, Weon Sik

AU - Shin, Hee Won

AU - Lee, Eun Seok

AU - Shin, Eun Jeong

AU - Jung, Jin Seung

AU - Kim, Yong Rok

PY - 2005/4/7

Y1 - 2005/4/7

N2 - Unique starlike CdS particles were prepared from the lyotropic triblock copolymer solution system. The starlike CdS consists of a spherical core and dozens of the attached conical nanolobes. From the comparative studies with the spherical and rod-shaped CdS nanoparticles, the unique photophysical property is presented for the starlike CdS particle. The experimental results suggest that the photogenerated charge carriers at the tip-edge region of the conical nanolobe in the starlike CdS system diffuse into the thicker inner part including the core region, which is possibly due to the decreasing excited state potential gradient from the tip edge to the thicker inner part. This type of charge carrier diffusion dynamics from the surrounding to the thicker inner part in this anisotropic morphology of the starlike CdS semiconductor closely resembles the energy transfer dynamics in the organic dendrimers.

AB - Unique starlike CdS particles were prepared from the lyotropic triblock copolymer solution system. The starlike CdS consists of a spherical core and dozens of the attached conical nanolobes. From the comparative studies with the spherical and rod-shaped CdS nanoparticles, the unique photophysical property is presented for the starlike CdS particle. The experimental results suggest that the photogenerated charge carriers at the tip-edge region of the conical nanolobe in the starlike CdS system diffuse into the thicker inner part including the core region, which is possibly due to the decreasing excited state potential gradient from the tip edge to the thicker inner part. This type of charge carrier diffusion dynamics from the surrounding to the thicker inner part in this anisotropic morphology of the starlike CdS semiconductor closely resembles the energy transfer dynamics in the organic dendrimers.

UR - http://www.scopus.com/inward/record.url?scp=17044369229&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17044369229&partnerID=8YFLogxK

U2 - 10.1021/jp044402v

DO - 10.1021/jp044402v

M3 - Article

C2 - 16851686

AN - SCOPUS:17044369229

VL - 109

SP - 6204

EP - 6209

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

SN - 1520-6106

IS - 13

ER -