Open Access
Open access
Nanoscale Research Letters, volume 12, issue 1, publication number 314

Immobilization of pH-sensitive CdTe Quantum Dots in a Poly(acrylate) Hydrogel for Microfluidic Applications

M. Franke 1, 2
S Leubner 1, 3
A Dubavik 1, 3, 4
A. George 1, 3, 5
T. Savchenko 1, 3
C. Pini 1, 2
P. Frank 1, 2
D Melnikau 6, 7
Y Rakovich 6, 8, 9
N. Gaponik 1, 3
A. Eychmüller 1, 3
A. Richter 1, 2
Publication typeJournal Article
Publication date2017-04-27
Quartile SCImago
Q1
Quartile WOS
Impact factor
ISSN19317573, 1556276X
Condensed Matter Physics
General Materials Science
Abstract
Microfluidic devices present the basis of modern life sciences and chemical information processing. To control the flow and to allow optical readout, a reliable sensor material that can be easily utilized for microfluidic systems is in demand. Here, we present a new optical readout system for pH sensing based on pH sensitive, photoluminescent glutathione capped cadmium telluride quantum dots that are covalently immobilized in a poly(acrylate) hydrogel. For an applicable pH sensing the generated hybrid material is integrated in a microfluidic sensor chip setup. The hybrid material not only allows in situ readout, but also possesses valve properties due to the swelling behavior of the poly(acrylate) hydrogel. In this work, the swelling property of the hybrid material is utilized in a microfluidic valve seat, where a valve opening process is demonstrated by a fluid flow change and in situ monitored by photoluminescence quenching. This discrete photoluminescence detection (ON/OFF) of the fluid flow change (OFF/ON) enables upcoming chemical information processing.

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GOST Copy
Franke M. et al. Immobilization of pH-sensitive CdTe Quantum Dots in a Poly(acrylate) Hydrogel for Microfluidic Applications // Nanoscale Research Letters. 2017. Vol. 12. No. 1. 314
GOST all authors (up to 50) Copy
Franke M., Leubner S., Dubavik A., George A., Savchenko T., Pini C., Frank P., Melnikau D., Rakovich Y., Gaponik N., Eychmüller A., Richter A. Immobilization of pH-sensitive CdTe Quantum Dots in a Poly(acrylate) Hydrogel for Microfluidic Applications // Nanoscale Research Letters. 2017. Vol. 12. No. 1. 314
RIS |
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RIS Copy
TY - JOUR
DO - 10.1186/s11671-017-2069-x
UR - https://doi.org/10.1186/s11671-017-2069-x
TI - Immobilization of pH-sensitive CdTe Quantum Dots in a Poly(acrylate) Hydrogel for Microfluidic Applications
T2 - Nanoscale Research Letters
AU - Franke, M.
AU - Leubner, S
AU - Dubavik, A
AU - George, A.
AU - Savchenko, T.
AU - Pini, C.
AU - Frank, P.
AU - Melnikau, D
AU - Rakovich, Y
AU - Gaponik, N.
AU - Eychmüller, A.
AU - Richter, A.
PY - 2017
DA - 2017/04/27 00:00:00
PB - Springer Nature
IS - 1
VL - 12
SN - 1931-7573
SN - 1556-276X
ER -
BibTex
Cite this
BibTex Copy
@article{2017_Franke,
author = {M. Franke and S Leubner and A Dubavik and A. George and T. Savchenko and C. Pini and P. Frank and D Melnikau and Y Rakovich and N. Gaponik and A. Eychmüller and A. Richter},
title = {Immobilization of pH-sensitive CdTe Quantum Dots in a Poly(acrylate) Hydrogel for Microfluidic Applications},
journal = {Nanoscale Research Letters},
year = {2017},
volume = {12},
publisher = {Springer Nature},
month = {apr},
url = {https://doi.org/10.1186/s11671-017-2069-x},
number = {1},
doi = {10.1186/s11671-017-2069-x}
}
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