Size analysis of CdSe/ZnS quantum dots in aqueous solution by using laser-induced breakdown detection

Ji Woong Kim, Jason J. Han, Joong Gill Choi, Dae Kyu Kim, Koo Chul Je, Seung Han Park, Jong Il Yun, Thomas Fanghänel

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

CdSe/ZnS quantum dots (QDs) coated with mercaptoacetic acid (MAA) in an anqueous solution are investigated by means of highly sensitive laser-induced breakdown detection (LIBD). In particular, a size distribution analysis of QDs dispersed in ultra pure water is performed as a function of time until a steady state is reached. Freshly prepared CdSe/ZnS-MAA QDs are found to initially exist as relatively large (25.0 × 1.2 nm) agglomerates that slowly disperse over days to small (6.5 × 0.2 nm), but stable, single particles. These results of increasing breakdown probability with increasing particle density amply demonstrate that LIBD can be a promising analytical technique for size analysis of nanoparticle formation and stability.

Original languageEnglish
Pages (from-to)135-138
Number of pages4
JournalJournal of the Korean Physical Society
Volume49
Issue number1
Publication statusPublished - 2006 Jul 1

Fingerprint

breakdown
quantum dots
aqueous solutions
lasers
acids
nanoparticles
water

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Kim, Ji Woong ; Han, Jason J. ; Choi, Joong Gill ; Kim, Dae Kyu ; Je, Koo Chul ; Park, Seung Han ; Yun, Jong Il ; Fanghänel, Thomas. / Size analysis of CdSe/ZnS quantum dots in aqueous solution by using laser-induced breakdown detection. In: Journal of the Korean Physical Society. 2006 ; Vol. 49, No. 1. pp. 135-138.
@article{83cde1a98cd74c9ca118f3c6a49e85cf,
title = "Size analysis of CdSe/ZnS quantum dots in aqueous solution by using laser-induced breakdown detection",
abstract = "CdSe/ZnS quantum dots (QDs) coated with mercaptoacetic acid (MAA) in an anqueous solution are investigated by means of highly sensitive laser-induced breakdown detection (LIBD). In particular, a size distribution analysis of QDs dispersed in ultra pure water is performed as a function of time until a steady state is reached. Freshly prepared CdSe/ZnS-MAA QDs are found to initially exist as relatively large (25.0 × 1.2 nm) agglomerates that slowly disperse over days to small (6.5 × 0.2 nm), but stable, single particles. These results of increasing breakdown probability with increasing particle density amply demonstrate that LIBD can be a promising analytical technique for size analysis of nanoparticle formation and stability.",
author = "Kim, {Ji Woong} and Han, {Jason J.} and Choi, {Joong Gill} and Kim, {Dae Kyu} and Je, {Koo Chul} and Park, {Seung Han} and Yun, {Jong Il} and Thomas Fangh{\"a}nel",
year = "2006",
month = "7",
day = "1",
language = "English",
volume = "49",
pages = "135--138",
journal = "Journal of the Korean Physical Society",
issn = "0374-4884",
publisher = "Korean Physical Society",
number = "1",

}

Size analysis of CdSe/ZnS quantum dots in aqueous solution by using laser-induced breakdown detection. / Kim, Ji Woong; Han, Jason J.; Choi, Joong Gill; Kim, Dae Kyu; Je, Koo Chul; Park, Seung Han; Yun, Jong Il; Fanghänel, Thomas.

In: Journal of the Korean Physical Society, Vol. 49, No. 1, 01.07.2006, p. 135-138.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Size analysis of CdSe/ZnS quantum dots in aqueous solution by using laser-induced breakdown detection

AU - Kim, Ji Woong

AU - Han, Jason J.

AU - Choi, Joong Gill

AU - Kim, Dae Kyu

AU - Je, Koo Chul

AU - Park, Seung Han

AU - Yun, Jong Il

AU - Fanghänel, Thomas

PY - 2006/7/1

Y1 - 2006/7/1

N2 - CdSe/ZnS quantum dots (QDs) coated with mercaptoacetic acid (MAA) in an anqueous solution are investigated by means of highly sensitive laser-induced breakdown detection (LIBD). In particular, a size distribution analysis of QDs dispersed in ultra pure water is performed as a function of time until a steady state is reached. Freshly prepared CdSe/ZnS-MAA QDs are found to initially exist as relatively large (25.0 × 1.2 nm) agglomerates that slowly disperse over days to small (6.5 × 0.2 nm), but stable, single particles. These results of increasing breakdown probability with increasing particle density amply demonstrate that LIBD can be a promising analytical technique for size analysis of nanoparticle formation and stability.

AB - CdSe/ZnS quantum dots (QDs) coated with mercaptoacetic acid (MAA) in an anqueous solution are investigated by means of highly sensitive laser-induced breakdown detection (LIBD). In particular, a size distribution analysis of QDs dispersed in ultra pure water is performed as a function of time until a steady state is reached. Freshly prepared CdSe/ZnS-MAA QDs are found to initially exist as relatively large (25.0 × 1.2 nm) agglomerates that slowly disperse over days to small (6.5 × 0.2 nm), but stable, single particles. These results of increasing breakdown probability with increasing particle density amply demonstrate that LIBD can be a promising analytical technique for size analysis of nanoparticle formation and stability.

UR - http://www.scopus.com/inward/record.url?scp=33747038975&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33747038975&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:33747038975

VL - 49

SP - 135

EP - 138

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

SN - 0374-4884

IS - 1

ER -