Colloidal, water soluble probes constructed with quantum dots and amphiphilic poly(ferrocenylsilane) for smart redox sensing

D.J. Janczewski, Jing Song, Gyula J. Vancso

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)

Abstract

Poly(ferrocenylsilane) (PFS), consisting of main chains that feature ferrocene bridged by substituted silane units, was used to construct redox responsive shells on hydrophobic CdSe/ZnS quantum dots (QDs). The novel coating renders QD colloids stable in water in both reduced and oxidized forms of the ferrocene. Reversible fluorescence quenching was observed for chemically induced redox reactions of the colloidal assembly. Electrochemical oxidation studied in the bulk solution and in layer-by-layer composite films featuring combinations of QDs, PFSs, and other polymers, led to irreversible quenching of QDs. Finally, applications for sensing are briefly discussed
Original languageEnglish
Pages (from-to)87-94
Number of pages8
JournalEuropean polymer journal
Volume54
DOIs
Publication statusPublished - 2014

Fingerprint

Semiconductor quantum dots
quantum dots
Water
probes
water
Quenching
quenching
Silanes
electrochemical oxidation
Electrochemical oxidation
Redox reactions
Colloids
Composite films
silanes
colloids
Polymers
assembly
Fluorescence
coatings
Coatings

Keywords

  • METIS-306442
  • IR-94974

Cite this

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title = "Colloidal, water soluble probes constructed with quantum dots and amphiphilic poly(ferrocenylsilane) for smart redox sensing",
abstract = "Poly(ferrocenylsilane) (PFS), consisting of main chains that feature ferrocene bridged by substituted silane units, was used to construct redox responsive shells on hydrophobic CdSe/ZnS quantum dots (QDs). The novel coating renders QD colloids stable in water in both reduced and oxidized forms of the ferrocene. Reversible fluorescence quenching was observed for chemically induced redox reactions of the colloidal assembly. Electrochemical oxidation studied in the bulk solution and in layer-by-layer composite films featuring combinations of QDs, PFSs, and other polymers, led to irreversible quenching of QDs. Finally, applications for sensing are briefly discussed",
keywords = "METIS-306442, IR-94974",
author = "D.J. Janczewski and Jing Song and Vancso, {Gyula J.}",
year = "2014",
doi = "10.1016/j.eurpolymj.2014.02.012",
language = "English",
volume = "54",
pages = "87--94",
journal = "European polymer journal",
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Colloidal, water soluble probes constructed with quantum dots and amphiphilic poly(ferrocenylsilane) for smart redox sensing. / Janczewski, D.J.; Song, Jing; Vancso, Gyula J.

In: European polymer journal, Vol. 54, 2014, p. 87-94.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Colloidal, water soluble probes constructed with quantum dots and amphiphilic poly(ferrocenylsilane) for smart redox sensing

AU - Janczewski, D.J.

AU - Song, Jing

AU - Vancso, Gyula J.

PY - 2014

Y1 - 2014

N2 - Poly(ferrocenylsilane) (PFS), consisting of main chains that feature ferrocene bridged by substituted silane units, was used to construct redox responsive shells on hydrophobic CdSe/ZnS quantum dots (QDs). The novel coating renders QD colloids stable in water in both reduced and oxidized forms of the ferrocene. Reversible fluorescence quenching was observed for chemically induced redox reactions of the colloidal assembly. Electrochemical oxidation studied in the bulk solution and in layer-by-layer composite films featuring combinations of QDs, PFSs, and other polymers, led to irreversible quenching of QDs. Finally, applications for sensing are briefly discussed

AB - Poly(ferrocenylsilane) (PFS), consisting of main chains that feature ferrocene bridged by substituted silane units, was used to construct redox responsive shells on hydrophobic CdSe/ZnS quantum dots (QDs). The novel coating renders QD colloids stable in water in both reduced and oxidized forms of the ferrocene. Reversible fluorescence quenching was observed for chemically induced redox reactions of the colloidal assembly. Electrochemical oxidation studied in the bulk solution and in layer-by-layer composite films featuring combinations of QDs, PFSs, and other polymers, led to irreversible quenching of QDs. Finally, applications for sensing are briefly discussed

KW - METIS-306442

KW - IR-94974

U2 - 10.1016/j.eurpolymj.2014.02.012

DO - 10.1016/j.eurpolymj.2014.02.012

M3 - Article

VL - 54

SP - 87

EP - 94

JO - European polymer journal

JF - European polymer journal

SN - 0014-3057

ER -