Stability and quantum yield effects of small molecule additives on solutions of semiconductor nanoparticles

J A  Gaunt; A E  Knight; S A  Windsor; V  Chechik

doi:10.1016/j.jcis.2005.04.073

Stability and quantum yield effects of small molecule additives on solutions of semiconductor nanoparticles

J A Gaunt, A E Knight, S A Windsor, V Chechik

Chemistry

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

Abstract

The effect of additives on the photostability of semiconductor nanoparticles was studied using CdSe, CdSe/ZnSe and CdSe/ZnS particles of various sizes and composition. The additives included phosphine oxides, amines, and antioxidants. Strong initial enhancement of band edge emission by hexadecylamine was observed for the uncoated particles but stability over a week period in light and air was shown to be poor. Inorganic coatings rendered the nanoparticles initially insensitive to additive but provided little extra stability in terms of photoluminescence. Antioxidant was shown to be effective at reducing the rate of photooxidative degradation for all particles in chloroform but not in toluene. (c) 2005 Elsevier Inc. All rights reserved.

Original language	English
Pages (from-to)	437-443
Number of pages	7
Journal	JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume	290
Issue number	2
DOIs	https://doi.org/10.1016/j.jcis.2005.04.073
Publication status	Published - 15 Oct 2005

Keywords

CdSe
CdSe/ZnSe
CdSe/ZnS
nanoparticles
photostability
photooxidation
amine
phosphine
antioxidant
CDSE/CDS CORE/SHELL NANOCRYSTALS
OPTICAL-PROPERTIES
EPITAXIAL-GROWTH
SIZE DISPERSION
HOLE ACCEPTOR
DOTS
LUMINESCENT
PHOTOLUMINESCENCE
SPECTROSCOPY
ADSORPTION

Access to Document

10.1016/j.jcis.2005.04.073

Cite this

@article{0c874094de6a4490a2fd5a31a336dd88,

title = "Stability and quantum yield effects of small molecule additives on solutions of semiconductor nanoparticles",

abstract = "The effect of additives on the photostability of semiconductor nanoparticles was studied using CdSe, CdSe/ZnSe and CdSe/ZnS particles of various sizes and composition. The additives included phosphine oxides, amines, and antioxidants. Strong initial enhancement of band edge emission by hexadecylamine was observed for the uncoated particles but stability over a week period in light and air was shown to be poor. Inorganic coatings rendered the nanoparticles initially insensitive to additive but provided little extra stability in terms of photoluminescence. Antioxidant was shown to be effective at reducing the rate of photooxidative degradation for all particles in chloroform but not in toluene. (c) 2005 Elsevier Inc. All rights reserved.",

keywords = "CdSe, CdSe/ZnSe, CdSe/ZnS, nanoparticles, photostability, photooxidation, amine, phosphine, antioxidant, CDSE/CDS CORE/SHELL NANOCRYSTALS, OPTICAL-PROPERTIES, EPITAXIAL-GROWTH, SIZE DISPERSION, HOLE ACCEPTOR, DOTS, LUMINESCENT, PHOTOLUMINESCENCE, SPECTROSCOPY, ADSORPTION",

author = "Gaunt, {J A} and Knight, {A E} and Windsor, {S A} and V Chechik",

year = "2005",

month = oct,

day = "15",

doi = "10.1016/j.jcis.2005.04.073",

language = "English",

volume = "290",

pages = "437--443",

journal = "JOURNAL OF COLLOID AND INTERFACE SCIENCE",

issn = "0021-9797",

publisher = "Academic Press",

number = "2",

}

TY - JOUR

T1 - Stability and quantum yield effects of small molecule additives on solutions of semiconductor nanoparticles

AU - Gaunt, J A

AU - Knight, A E

AU - Windsor, S A

AU - Chechik, V

PY - 2005/10/15

Y1 - 2005/10/15

N2 - The effect of additives on the photostability of semiconductor nanoparticles was studied using CdSe, CdSe/ZnSe and CdSe/ZnS particles of various sizes and composition. The additives included phosphine oxides, amines, and antioxidants. Strong initial enhancement of band edge emission by hexadecylamine was observed for the uncoated particles but stability over a week period in light and air was shown to be poor. Inorganic coatings rendered the nanoparticles initially insensitive to additive but provided little extra stability in terms of photoluminescence. Antioxidant was shown to be effective at reducing the rate of photooxidative degradation for all particles in chloroform but not in toluene. (c) 2005 Elsevier Inc. All rights reserved.

AB - The effect of additives on the photostability of semiconductor nanoparticles was studied using CdSe, CdSe/ZnSe and CdSe/ZnS particles of various sizes and composition. The additives included phosphine oxides, amines, and antioxidants. Strong initial enhancement of band edge emission by hexadecylamine was observed for the uncoated particles but stability over a week period in light and air was shown to be poor. Inorganic coatings rendered the nanoparticles initially insensitive to additive but provided little extra stability in terms of photoluminescence. Antioxidant was shown to be effective at reducing the rate of photooxidative degradation for all particles in chloroform but not in toluene. (c) 2005 Elsevier Inc. All rights reserved.

KW - CdSe

KW - CdSe/ZnSe

KW - CdSe/ZnS

KW - nanoparticles

KW - photostability

KW - photooxidation

KW - amine

KW - phosphine

KW - antioxidant

KW - CDSE/CDS CORE/SHELL NANOCRYSTALS

KW - OPTICAL-PROPERTIES

KW - EPITAXIAL-GROWTH

KW - SIZE DISPERSION

KW - HOLE ACCEPTOR

KW - DOTS

KW - LUMINESCENT

KW - PHOTOLUMINESCENCE

KW - SPECTROSCOPY

KW - ADSORPTION

U2 - 10.1016/j.jcis.2005.04.073

DO - 10.1016/j.jcis.2005.04.073

M3 - Article

SN - 0021-9797

VL - 290

SP - 437

EP - 443

JO - JOURNAL OF COLLOID AND INTERFACE SCIENCE

JF - JOURNAL OF COLLOID AND INTERFACE SCIENCE

IS - 2

ER -