Synthesis and characterization of colloidal CdSe<inf>x</inf>S<inf>1-x</inf>/ZnS quantum dots

Mark V. Reymatias; Arjun Senthil; Dominic Bosomtwi; Shruti I. Gharde; Gema J. Alas; Deyannah J. Walker; Adreanna G. Rael; Nhi Nguyen; Nathan J. Withers; Sergei A. Ivanov; John Watt; Dale L. Huber; Marek Osiński

doi:10.1117/12.2553001

Synthesis and characterization of colloidal CdSe<inf>x</inf>S<inf>1-x</inf>/ZnS quantum dots

Mark V. Reymatias
, Arjun Senthil
, Dominic Bosomtwi
, Shruti I. Gharde
, Gema J. Alas
, Deyannah J. Walker
, Adreanna G. Rael
, Nhi Nguyen
, Nathan J. Withers
, Sergei A. Ivanov
, John Watt
, Dale L. Huber
, Marek Osiński

Los Alamos National Laboratory

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

CdSexS1-x/ZnS quantum dots (QDs) can cover a broader spectral range than the commonly used CdSe/ZnS QDs and are potentially useful as biomarkers for tagging cell lines such as HeLa, A549, and MCF-7 due to their high photoluminescence intensity and stability in solution. So far, there have been few studies of colloidal CdSexS1-x/ZnS QDs that would simultaneously investigate changes in a) the molar composition of QD cores, and b) the shell thickness, as well as the effects of these changes on the photoluminescence and quantum yield properties of the QDs. CdSeyS1-y QDs and CdSexS1-x/ZnS core/shell QDs were synthesized via a previously reported and modified hot-injection procedure and via a telescoping one-pot synthesis based on the modified hot-injection procedure. Size, morphology, composition, and colloidal stability of these QD core/shell systems is reported with data obtained from TEM, XRD, TGA, DSC, DLS, and zeta potential techniques. Optical characterization is described using data collected from UV-Vis absorption spectrophotometry and photoluminescence spectroscopy.

Original language	English
Title of host publication	Progress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume	11255
DOIs	https://doi.org/10.1117/12.2553001
State	Published - Jan 1 2020
Event	Colloidal Nanoparticles for Biomedical Applications XV 2020 - Duration: Jan 1 2020 → …

Conference

Conference	Colloidal Nanoparticles for Biomedical Applications XV 2020
Period	01/1/20 → …

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Reymatias, M. V., Senthil, A., Bosomtwi, D., Gharde, S. I., Alas, G. J., Walker, D. J., Rael, A. G., Nguyen, N., Withers, N. J., Ivanov, S. A., Watt, J., Huber, D. L., & Osiński, M. (2020). Synthesis and characterization of colloidal CdSe<inf>x</inf>S<inf>1-x</inf>/ZnS quantum dots. In Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 11255) https://doi.org/10.1117/12.2553001

@inproceedings{06e63ab63cab442d90f36490ee4f828a,

title = "Synthesis and characterization of colloidal CdSexS1-x/ZnS quantum dots",

abstract = "CdSexS1-x/ZnS quantum dots (QDs) can cover a broader spectral range than the commonly used CdSe/ZnS QDs and are potentially useful as biomarkers for tagging cell lines such as HeLa, A549, and MCF-7 due to their high photoluminescence intensity and stability in solution. So far, there have been few studies of colloidal CdSexS1-x/ZnS QDs that would simultaneously investigate changes in a) the molar composition of QD cores, and b) the shell thickness, as well as the effects of these changes on the photoluminescence and quantum yield properties of the QDs. CdSeyS1-y QDs and CdSexS1-x/ZnS core/shell QDs were synthesized via a previously reported and modified hot-injection procedure and via a telescoping one-pot synthesis based on the modified hot-injection procedure. Size, morphology, composition, and colloidal stability of these QD core/shell systems is reported with data obtained from TEM, XRD, TGA, DSC, DLS, and zeta potential techniques. Optical characterization is described using data collected from UV-Vis absorption spectrophotometry and photoluminescence spectroscopy.",

author = "Reymatias, \{Mark V.\} and Arjun Senthil and Dominic Bosomtwi and Gharde, \{Shruti I.\} and Alas, \{Gema J.\} and Walker, \{Deyannah J.\} and Rael, \{Adreanna G.\} and Nhi Nguyen and Withers, \{Nathan J.\} and Ivanov, \{Sergei A.\} and John Watt and Huber, \{Dale L.\} and Marek Osi{\'n}ski",

year = "2020",

month = jan,

day = "1",

doi = "10.1117/12.2553001",

language = "English",

isbn = "9781510632738",

volume = "11255",

booktitle = "Progress in Biomedical Optics and Imaging - Proceedings of SPIE",

note = "Colloidal Nanoparticles for Biomedical Applications XV 2020 ; Conference date: 01-01-2020",

}

Reymatias, MV, Senthil, A, Bosomtwi, D, Gharde, SI, Alas, GJ, Walker, DJ, Rael, AG, Nguyen, N, Withers, NJ, Ivanov, SA , Watt, J , Huber, DL & Osiński, M 2020, Synthesis and characterization of colloidal CdSe<inf>x</inf>S<inf>1-x</inf>/ZnS quantum dots. in Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 11255, Colloidal Nanoparticles for Biomedical Applications XV 2020, 01/1/20. https://doi.org/10.1117/12.2553001

TY - GEN

T1 - Synthesis and characterization of colloidal CdSexS1-x/ZnS quantum dots

AU - Reymatias, Mark V.

AU - Senthil, Arjun

AU - Bosomtwi, Dominic

AU - Gharde, Shruti I.

AU - Alas, Gema J.

AU - Walker, Deyannah J.

AU - Rael, Adreanna G.

AU - Nguyen, Nhi

AU - Withers, Nathan J.

AU - Ivanov, Sergei A.

AU - Watt, John

AU - Huber, Dale L.

AU - Osiński, Marek

PY - 2020/1/1

Y1 - 2020/1/1

N2 - CdSexS1-x/ZnS quantum dots (QDs) can cover a broader spectral range than the commonly used CdSe/ZnS QDs and are potentially useful as biomarkers for tagging cell lines such as HeLa, A549, and MCF-7 due to their high photoluminescence intensity and stability in solution. So far, there have been few studies of colloidal CdSexS1-x/ZnS QDs that would simultaneously investigate changes in a) the molar composition of QD cores, and b) the shell thickness, as well as the effects of these changes on the photoluminescence and quantum yield properties of the QDs. CdSeyS1-y QDs and CdSexS1-x/ZnS core/shell QDs were synthesized via a previously reported and modified hot-injection procedure and via a telescoping one-pot synthesis based on the modified hot-injection procedure. Size, morphology, composition, and colloidal stability of these QD core/shell systems is reported with data obtained from TEM, XRD, TGA, DSC, DLS, and zeta potential techniques. Optical characterization is described using data collected from UV-Vis absorption spectrophotometry and photoluminescence spectroscopy.

AB - CdSexS1-x/ZnS quantum dots (QDs) can cover a broader spectral range than the commonly used CdSe/ZnS QDs and are potentially useful as biomarkers for tagging cell lines such as HeLa, A549, and MCF-7 due to their high photoluminescence intensity and stability in solution. So far, there have been few studies of colloidal CdSexS1-x/ZnS QDs that would simultaneously investigate changes in a) the molar composition of QD cores, and b) the shell thickness, as well as the effects of these changes on the photoluminescence and quantum yield properties of the QDs. CdSeyS1-y QDs and CdSexS1-x/ZnS core/shell QDs were synthesized via a previously reported and modified hot-injection procedure and via a telescoping one-pot synthesis based on the modified hot-injection procedure. Size, morphology, composition, and colloidal stability of these QD core/shell systems is reported with data obtained from TEM, XRD, TGA, DSC, DLS, and zeta potential techniques. Optical characterization is described using data collected from UV-Vis absorption spectrophotometry and photoluminescence spectroscopy.

UR - https://www.scopus.com/pages/publications/85083307812

U2 - 10.1117/12.2553001

DO - 10.1117/12.2553001

M3 - Conference contribution

SN - 9781510632738

VL - 11255

BT - Progress in Biomedical Optics and Imaging - Proceedings of SPIE

T2 - Colloidal Nanoparticles for Biomedical Applications XV 2020

Y2 - 1 January 2020

ER -

Synthesis and characterization of colloidal CdSe<inf>x</inf>S<inf>1-x</inf>/ZnS quantum dots

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