Immobilization of pH-sensitive CdTe quantum dots in a poly(acrylate) hydrogel for microfluidic applications

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 sen...

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Autores: Franke, M., Leubner, S., Dubavik, A., George, A., Savchenko, T., Pini, C., Frank, P., Melnikau, D., Rakovich, Yury P., Gaponik, Nikolai, Eychmüller, A., Richter, A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/176733
Acceso en línea:http://hdl.handle.net/10261/176733
Access Level:acceso abierto
Palabra clave:PH-sensitive polymer
Photoluminescence detection
Microfluidic valve
Poly(acrylate) hydrogel
Cadmium telluride
Quantum dots
Hybrid materials
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spelling Immobilization of pH-sensitive CdTe quantum dots in a poly(acrylate) hydrogel for microfluidic applicationsFranke, M.Leubner, S.Dubavik, A.George, A.Savchenko, T.Pini, C.Frank, P.Melnikau, D.Rakovich, Yury P.Gaponik, NikolaiEychmüller, A.Richter, A.PH-sensitive polymerPhotoluminescence detectionMicrofluidic valvePoly(acrylate) hydrogelCadmium tellurideQuantum dotsHybrid materialsMicrofluidic 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.MF and SL gratefully acknowledge the cluster of Excellence “Center for Advancing Electronics Dresden (CfAED) for financial and assistant support. AD thanks the Government of the Russian Federation (Grant 074-U01) through ITMO Post-Doctoral Fellowship and the European Social Fund (ESF) for financing within the project “ChemIT”.Peer ReviewedSpringer NatureRussian GovernmentEuropean Centre for Emerging Materials and Processes DresdenEuropean CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2019201920172019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/176733reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1186/s11671-017-2069-xSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1767332026-05-22T06:33:51Z
dc.title.none.fl_str_mv Immobilization of pH-sensitive CdTe quantum dots in a poly(acrylate) hydrogel for microfluidic applications
title Immobilization of pH-sensitive CdTe quantum dots in a poly(acrylate) hydrogel for microfluidic applications
spellingShingle Immobilization of pH-sensitive CdTe quantum dots in a poly(acrylate) hydrogel for microfluidic applications
Franke, M.
PH-sensitive polymer
Photoluminescence detection
Microfluidic valve
Poly(acrylate) hydrogel
Cadmium telluride
Quantum dots
Hybrid materials
title_short Immobilization of pH-sensitive CdTe quantum dots in a poly(acrylate) hydrogel for microfluidic applications
title_full Immobilization of pH-sensitive CdTe quantum dots in a poly(acrylate) hydrogel for microfluidic applications
title_fullStr Immobilization of pH-sensitive CdTe quantum dots in a poly(acrylate) hydrogel for microfluidic applications
title_full_unstemmed Immobilization of pH-sensitive CdTe quantum dots in a poly(acrylate) hydrogel for microfluidic applications
title_sort Immobilization of pH-sensitive CdTe quantum dots in a poly(acrylate) hydrogel for microfluidic applications
dc.creator.none.fl_str_mv Franke, M.
Leubner, S.
Dubavik, A.
George, A.
Savchenko, T.
Pini, C.
Frank, P.
Melnikau, D.
Rakovich, Yury P.
Gaponik, Nikolai
Eychmüller, A.
Richter, A.
author Franke, M.
author_facet Franke, M.
Leubner, S.
Dubavik, A.
George, A.
Savchenko, T.
Pini, C.
Frank, P.
Melnikau, D.
Rakovich, Yury P.
Gaponik, Nikolai
Eychmüller, A.
Richter, A.
author_role author
author2 Leubner, S.
Dubavik, A.
George, A.
Savchenko, T.
Pini, C.
Frank, P.
Melnikau, D.
Rakovich, Yury P.
Gaponik, Nikolai
Eychmüller, A.
Richter, A.
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Russian Government
European Centre for Emerging Materials and Processes Dresden
European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv PH-sensitive polymer
Photoluminescence detection
Microfluidic valve
Poly(acrylate) hydrogel
Cadmium telluride
Quantum dots
Hybrid materials
topic PH-sensitive polymer
Photoluminescence detection
Microfluidic valve
Poly(acrylate) hydrogel
Cadmium telluride
Quantum dots
Hybrid materials
description 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.
publishDate 2017
dc.date.none.fl_str_mv 2017
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/176733
url http://hdl.handle.net/10261/176733
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1186/s11671-017-2069-x
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Springer Nature
publisher.none.fl_str_mv Springer Nature
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,228081

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