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Investigation of the Exchange Kinetics and Surface Recovery of CdxHg1-xTe Quantum Dots during Cation Exchange Using a Microfluidic Flow Reactor

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Investigation of the Exchange Kinetics and Surface Recovery of CdxHg1-xTe Quantum Dots during Cation Exchange Using a Microfluidic Flow Reactor. / Kershaw, Stephen V.; Abdelazim, Nema Mohamed Safwat Ibrahim; Zhao, Yihua et al.
In: Chemistry of Materials, Vol. 29, No. 7, 11.04.2017, p. 2756-2768.

Research output: Contribution to Journal/Magazine › Journal article

Harvard

Kershaw, SV, Abdelazim, NMSI, Zhao, Y, Susha, AS, Zhovtiuk, O, Teoh, WY & Rogach, AL 2017, 'Investigation of the Exchange Kinetics and Surface Recovery of CdxHg1-xTe Quantum Dots during Cation Exchange Using a Microfluidic Flow Reactor', Chemistry of Materials, vol. 29, no. 7, pp. 2756-2768. https://doi.org/10.1021/acs.chemmater.6b04544

APA

Kershaw, S. V., Abdelazim, N. M. S. I., Zhao, Y., Susha, A. S., Zhovtiuk, O., Teoh, W. Y., & Rogach, A. L. (2017). Investigation of the Exchange Kinetics and Surface Recovery of CdxHg1-xTe Quantum Dots during Cation Exchange Using a Microfluidic Flow Reactor. Chemistry of Materials, 29(7), 2756-2768. https://doi.org/10.1021/acs.chemmater.6b04544

Vancouver

Kershaw SV, Abdelazim NMSI, Zhao Y, Susha AS, Zhovtiuk O, Teoh WY et al. Investigation of the Exchange Kinetics and Surface Recovery of CdxHg1-xTe Quantum Dots during Cation Exchange Using a Microfluidic Flow Reactor. Chemistry of Materials. 2017 Apr 11;29(7):2756-2768. Epub 2017 Mar 3. doi: 10.1021/acs.chemmater.6b04544

Author

Kershaw, Stephen V. ; Abdelazim, Nema Mohamed Safwat Ibrahim ; Zhao, Yihua et al. / Investigation of the Exchange Kinetics and Surface Recovery of CdxHg1-xTe Quantum Dots during Cation Exchange Using a Microfluidic Flow Reactor. In: Chemistry of Materials. 2017 ; Vol. 29, No. 7. pp. 2756-2768.

Bibtex

@article{7e7ebc14862142edb26ea871a0224d8c,
title = "Investigation of the Exchange Kinetics and Surface Recovery of CdxHg1-xTe Quantum Dots during Cation Exchange Using a Microfluidic Flow Reactor",
abstract = "Detailed analyses of coupled photoluminescence, emission lifetime, and absorption measurements have been made on the products of cation exchange reactions between CdTe nanocrystals and Hg2+ salt/ligand solutions in a microfluidic flow reactor and capillary measurement cell to probe the reaction kinetics over the seconds to hours time scale and to establish the influence of the reaction conditions on the spatial distribution of the mixed cations within the resulting CdxHg1–xTe colloidal quantum dots. The establishment of the evolution of the radiative and nonradiative rates allowed the recovery of the emission quantum yield in CdxHg1–xTe quantum dots to be quantified to almost 50% and the necessary time scales to be determined for each set of reaction conditions. The reaction kinetics showed clear indication of a fast surface exchange process followed by a slower internal rearrangement of the cation distribution.",
author = "Kershaw, {Stephen V.} and Abdelazim, {Nema Mohamed Safwat Ibrahim} and Yihua Zhao and Susha, {Andrei S.} and Olga Zhovtiuk and Teoh, {Wey Yang} and Rogach, {Andrey L.}",
year = "2017",
month = apr,
day = "11",
doi = "10.1021/acs.chemmater.6b04544",
language = "English",
volume = "29",
pages = "2756--2768",
journal = "Chemistry of Materials",
issn = "0897-4756",
publisher = "AMER CHEMICAL SOC",
number = "7",

}

RIS

TY - JOUR

T1 - Investigation of the Exchange Kinetics and Surface Recovery of CdxHg1-xTe Quantum Dots during Cation Exchange Using a Microfluidic Flow Reactor

AU - Kershaw, Stephen V.

AU - Abdelazim, Nema Mohamed Safwat Ibrahim

AU - Zhao, Yihua

AU - Susha, Andrei S.

AU - Zhovtiuk, Olga

AU - Teoh, Wey Yang

AU - Rogach, Andrey L.

PY - 2017/4/11

Y1 - 2017/4/11

N2 - Detailed analyses of coupled photoluminescence, emission lifetime, and absorption measurements have been made on the products of cation exchange reactions between CdTe nanocrystals and Hg2+ salt/ligand solutions in a microfluidic flow reactor and capillary measurement cell to probe the reaction kinetics over the seconds to hours time scale and to establish the influence of the reaction conditions on the spatial distribution of the mixed cations within the resulting CdxHg1–xTe colloidal quantum dots. The establishment of the evolution of the radiative and nonradiative rates allowed the recovery of the emission quantum yield in CdxHg1–xTe quantum dots to be quantified to almost 50% and the necessary time scales to be determined for each set of reaction conditions. The reaction kinetics showed clear indication of a fast surface exchange process followed by a slower internal rearrangement of the cation distribution.

AB - Detailed analyses of coupled photoluminescence, emission lifetime, and absorption measurements have been made on the products of cation exchange reactions between CdTe nanocrystals and Hg2+ salt/ligand solutions in a microfluidic flow reactor and capillary measurement cell to probe the reaction kinetics over the seconds to hours time scale and to establish the influence of the reaction conditions on the spatial distribution of the mixed cations within the resulting CdxHg1–xTe colloidal quantum dots. The establishment of the evolution of the radiative and nonradiative rates allowed the recovery of the emission quantum yield in CdxHg1–xTe quantum dots to be quantified to almost 50% and the necessary time scales to be determined for each set of reaction conditions. The reaction kinetics showed clear indication of a fast surface exchange process followed by a slower internal rearrangement of the cation distribution.

U2 - 10.1021/acs.chemmater.6b04544

DO - 10.1021/acs.chemmater.6b04544

M3 - Journal article

VL - 29

SP - 2756

EP - 2768

JO - Chemistry of Materials

JF - Chemistry of Materials

SN - 0897-4756

IS - 7

ER -