Luminescent CdTe quantum dots and nanorods as metal ion probes

Jun Li; Dongsheng Bao; Xia Hong; Di Li; Jinghong Li; Yubai Bai; Tiejin Li

doi:10.1016/j.colsurfa.2004.10.034

Luminescent CdTe quantum dots and nanorods as metal ion probes

Jun Li^*
, Dongsheng Bao
, Xia Hong
, Di Li
, Jinghong Li^*
, Yubai Bai
, Tiejin Li

^*Corresponding author for this work

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

59 Scopus citations

Abstract

Water-soluble luminescent thiol-capped CdTe QDs and nanorods have been synthesized and used to investigate the effect on their photoluminescence (PL) responses to divalent metal ions, such as zinc, calcium, magnesium, manganese, nickel, and cobalt ions. The change trends of PL were nearly similar for both CdTe QDs and nanorods. The zinc ions enhanced the photoluminescence, while the manganese, nickel, and cobalt ions quenched the PL. The effect on the PL response of CdTe QDs to divalent metal ions could be described by Langmuir-type binding model or Stern-Volmer-type equation. The CdTe nanorods were more sensitive to metal cations than QDs, and their enhancement mechanisms are different. CdTe QDs and nanorods maybe used as selective ion probes and developed as fluorescence sensors.

Original language	English
Pages (from-to)	267-271
Number of pages	5
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	257-258
DOIs	https://doi.org/10.1016/j.colsurfa.2004.10.034
State	Published - 5 May 2005
Externally published	Yes

Keywords

CdTe QDs
CdTe nanorods
Enhancement
Metal ions
Quenching

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10.1016/j.colsurfa.2004.10.034

Cite this

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title = "Luminescent CdTe quantum dots and nanorods as metal ion probes",

abstract = "Water-soluble luminescent thiol-capped CdTe QDs and nanorods have been synthesized and used to investigate the effect on their photoluminescence (PL) responses to divalent metal ions, such as zinc, calcium, magnesium, manganese, nickel, and cobalt ions. The change trends of PL were nearly similar for both CdTe QDs and nanorods. The zinc ions enhanced the photoluminescence, while the manganese, nickel, and cobalt ions quenched the PL. The effect on the PL response of CdTe QDs to divalent metal ions could be described by Langmuir-type binding model or Stern-Volmer-type equation. The CdTe nanorods were more sensitive to metal cations than QDs, and their enhancement mechanisms are different. CdTe QDs and nanorods maybe used as selective ion probes and developed as fluorescence sensors.",

keywords = "CdTe QDs, CdTe nanorods, Enhancement, Metal ions, Quenching",

author = "Jun Li and Dongsheng Bao and Xia Hong and Di Li and Jinghong Li and Yubai Bai and Tiejin Li",

year = "2005",

month = may,

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doi = "10.1016/j.colsurfa.2004.10.034",

language = "英语",

volume = "257-258",

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journal = "Colloids and Surfaces A: Physicochemical and Engineering Aspects",

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TY - JOUR

T1 - Luminescent CdTe quantum dots and nanorods as metal ion probes

AU - Li, Jun

AU - Bao, Dongsheng

AU - Hong, Xia

AU - Li, Di

AU - Li, Jinghong

AU - Bai, Yubai

AU - Li, Tiejin

PY - 2005/5/5

Y1 - 2005/5/5

N2 - Water-soluble luminescent thiol-capped CdTe QDs and nanorods have been synthesized and used to investigate the effect on their photoluminescence (PL) responses to divalent metal ions, such as zinc, calcium, magnesium, manganese, nickel, and cobalt ions. The change trends of PL were nearly similar for both CdTe QDs and nanorods. The zinc ions enhanced the photoluminescence, while the manganese, nickel, and cobalt ions quenched the PL. The effect on the PL response of CdTe QDs to divalent metal ions could be described by Langmuir-type binding model or Stern-Volmer-type equation. The CdTe nanorods were more sensitive to metal cations than QDs, and their enhancement mechanisms are different. CdTe QDs and nanorods maybe used as selective ion probes and developed as fluorescence sensors.

AB - Water-soluble luminescent thiol-capped CdTe QDs and nanorods have been synthesized and used to investigate the effect on their photoluminescence (PL) responses to divalent metal ions, such as zinc, calcium, magnesium, manganese, nickel, and cobalt ions. The change trends of PL were nearly similar for both CdTe QDs and nanorods. The zinc ions enhanced the photoluminescence, while the manganese, nickel, and cobalt ions quenched the PL. The effect on the PL response of CdTe QDs to divalent metal ions could be described by Langmuir-type binding model or Stern-Volmer-type equation. The CdTe nanorods were more sensitive to metal cations than QDs, and their enhancement mechanisms are different. CdTe QDs and nanorods maybe used as selective ion probes and developed as fluorescence sensors.

KW - CdTe QDs

KW - CdTe nanorods

KW - Enhancement

KW - Metal ions

KW - Quenching

UR - https://www.scopus.com/pages/publications/15044344828

U2 - 10.1016/j.colsurfa.2004.10.034

DO - 10.1016/j.colsurfa.2004.10.034

M3 - 文章

AN - SCOPUS:15044344828

SN - 0927-7757

VL - 257-258

SP - 267

EP - 271

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

ER -

Luminescent CdTe quantum dots and nanorods as metal ion probes

Abstract

Keywords

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