TY  - JOUR
AU  - Muhr, Verena
AU  - Buchner, Markus
AU  - Hirsch, Thomas
AU  - Jovanović, Dragana J.
AU  - Dolić, Slobodan D.
AU  - Dramićanin, Miroslav
AU  - Wolfbeis, Otto S.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1416
AB  - The authors describe the preparation of Eu3+-doped GdVO4 nanocrystals (NCs) by precipitation of the Cd3+(Eu3+)-citrate complex which was then converted to the respective vanadate by dialysis. The fractions of Eu3+ ranged from 5 to 100 mol%. The NCs were characterized by XRD, TEM, ICP-OES and dynamic light scattering which revealed that they possess superior colloidal stability in aqueous solutions in that no precipitation can be observed even after several months. The NCs display red and largely red shifted fluorescence (peaking at 618 nm) on photoexcitation at around 300 nm. Fluorescence is strongly quenched by hydrogen peroxide. It is also shown that the fraction of doping with Eu3+ strongly affects quenchability. Most efficient quenching by H2O2 is observed if the NCs are doped with 50% of Eu3+. The findings were exploited to develop a fluorometric assay for H2O2 that works in the 5 to 250 mu M concentration range, with a limit of detection as low as 1.6 mu M (at a signal-to-noise ratio of 3). The probe was further employed to design a highly sensitive enzymatic assay for glucose via measurement of the quantity of H2O2 formed as a result of the catalytic action of glucose oxidase. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Sensors and Actuators B: Chemical
T1  - Europium-doped GdVO4 nanocrystals as a luminescent probe for hydrogen peroxide and for enzymatic sensing of glucose
VL  - 241
SP  - 349
EP  - 356
DO  - 10.1016/j.snb.2016.10.090
ER  - 

@article{
author = "Muhr, Verena and Buchner, Markus and Hirsch, Thomas and Jovanović, Dragana J. and Dolić, Slobodan D. and Dramićanin, Miroslav and Wolfbeis, Otto S.",
year = "2017",
abstract = "The authors describe the preparation of Eu3+-doped GdVO4 nanocrystals (NCs) by precipitation of the Cd3+(Eu3+)-citrate complex which was then converted to the respective vanadate by dialysis. The fractions of Eu3+ ranged from 5 to 100 mol%. The NCs were characterized by XRD, TEM, ICP-OES and dynamic light scattering which revealed that they possess superior colloidal stability in aqueous solutions in that no precipitation can be observed even after several months. The NCs display red and largely red shifted fluorescence (peaking at 618 nm) on photoexcitation at around 300 nm. Fluorescence is strongly quenched by hydrogen peroxide. It is also shown that the fraction of doping with Eu3+ strongly affects quenchability. Most efficient quenching by H2O2 is observed if the NCs are doped with 50% of Eu3+. The findings were exploited to develop a fluorometric assay for H2O2 that works in the 5 to 250 mu M concentration range, with a limit of detection as low as 1.6 mu M (at a signal-to-noise ratio of 3). The probe was further employed to design a highly sensitive enzymatic assay for glucose via measurement of the quantity of H2O2 formed as a result of the catalytic action of glucose oxidase. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Sensors and Actuators B: Chemical",
title = "Europium-doped GdVO4 nanocrystals as a luminescent probe for hydrogen peroxide and for enzymatic sensing of glucose",
volume = "241",
pages = "349-356",
doi = "10.1016/j.snb.2016.10.090"
}

Muhr, V., Buchner, M., Hirsch, T., Jovanović, D. J., Dolić, S. D., Dramićanin, M.,& Wolfbeis, O. S.. (2017). Europium-doped GdVO4 nanocrystals as a luminescent probe for hydrogen peroxide and for enzymatic sensing of glucose. in Sensors and Actuators B: Chemical, 241, 349-356.
https://doi.org/10.1016/j.snb.2016.10.090

Muhr V, Buchner M, Hirsch T, Jovanović DJ, Dolić SD, Dramićanin M, Wolfbeis OS. Europium-doped GdVO4 nanocrystals as a luminescent probe for hydrogen peroxide and for enzymatic sensing of glucose. in Sensors and Actuators B: Chemical. 2017;241:349-356.
doi:10.1016/j.snb.2016.10.090 .

Muhr, Verena, Buchner, Markus, Hirsch, Thomas, Jovanović, Dragana J., Dolić, Slobodan D., Dramićanin, Miroslav, Wolfbeis, Otto S., "Europium-doped GdVO4 nanocrystals as a luminescent probe for hydrogen peroxide and for enzymatic sensing of glucose" in Sensors and Actuators B: Chemical, 241 (2017):349-356,
https://doi.org/10.1016/j.snb.2016.10.090 . .