Spectral properties of hybrid associates of colloidal quantum dots Zn0.5Cd0.5S, europium tenoyltrifluoroacetonate and methylene blue

Hybrid associates formed from colloidal Zn0.5Cd0.5S quantum dots, passivated with thioglycolic acid, europium tenoyltrioteracetonate and methylene blue molecules, absorption, luminescence, IR and time-resolved spectroscopy technique are studied. The shift of the IR absorption bands of COO- and C=O g...

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Main Authors: Smirnov Mikhail S., Perepelitsa Aleksey S., Kondratenko Tamara S., Zvyagin Andrey I., Ovchinnikov Oleg V.
Format: Article
Language:English
Published: EDP Sciences 2018-01-01
Series:EPJ Web of Conferences
Online Access:https://doi.org/10.1051/epjconf/201819004017
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spelling doaj-0f139538d6744e5b82507fd65c9a24ce2021-08-02T07:02:51ZengEDP SciencesEPJ Web of Conferences2100-014X2018-01-011900401710.1051/epjconf/201819004017epjconf_hbsm2018_04017Spectral properties of hybrid associates of colloidal quantum dots Zn0.5Cd0.5S, europium tenoyltrifluoroacetonate and methylene blueSmirnov Mikhail S.Perepelitsa Aleksey S.Kondratenko Tamara S.Zvyagin Andrey I.Ovchinnikov Oleg V.Hybrid associates formed from colloidal Zn0.5Cd0.5S quantum dots, passivated with thioglycolic acid, europium tenoyltrioteracetonate and methylene blue molecules, absorption, luminescence, IR and time-resolved spectroscopy technique are studied. The shift of the IR absorption bands of COO- and C=O groups of thioglycolic acid and europium thenoyltrifluoroacetonate has been detected. An increase in the efficiency of excitation of europium luminescence and a simultaneous increase lifetime of its luminescence upon adsorption on Zn0.5Cd0.5S quantum dots were found. Addition of methylene blue (thionine) molecules leads to quenching of the trap state luminescence of Zn0.5Cd0.5S and intracentric luminescence of Eu3+. A conclusion about the adsorption of Eu3+ on the surface of Zn0.5Cd0.5S quantum dots and the nonradiative energy transfer to methylene blue molecules was made.https://doi.org/10.1051/epjconf/201819004017
collection DOAJ
language English
format Article
sources DOAJ
author Smirnov Mikhail S.
Perepelitsa Aleksey S.
Kondratenko Tamara S.
Zvyagin Andrey I.
Ovchinnikov Oleg V.
spellingShingle Smirnov Mikhail S.
Perepelitsa Aleksey S.
Kondratenko Tamara S.
Zvyagin Andrey I.
Ovchinnikov Oleg V.
Spectral properties of hybrid associates of colloidal quantum dots Zn0.5Cd0.5S, europium tenoyltrifluoroacetonate and methylene blue
EPJ Web of Conferences
author_facet Smirnov Mikhail S.
Perepelitsa Aleksey S.
Kondratenko Tamara S.
Zvyagin Andrey I.
Ovchinnikov Oleg V.
author_sort Smirnov Mikhail S.
title Spectral properties of hybrid associates of colloidal quantum dots Zn0.5Cd0.5S, europium tenoyltrifluoroacetonate and methylene blue
title_short Spectral properties of hybrid associates of colloidal quantum dots Zn0.5Cd0.5S, europium tenoyltrifluoroacetonate and methylene blue
title_full Spectral properties of hybrid associates of colloidal quantum dots Zn0.5Cd0.5S, europium tenoyltrifluoroacetonate and methylene blue
title_fullStr Spectral properties of hybrid associates of colloidal quantum dots Zn0.5Cd0.5S, europium tenoyltrifluoroacetonate and methylene blue
title_full_unstemmed Spectral properties of hybrid associates of colloidal quantum dots Zn0.5Cd0.5S, europium tenoyltrifluoroacetonate and methylene blue
title_sort spectral properties of hybrid associates of colloidal quantum dots zn0.5cd0.5s, europium tenoyltrifluoroacetonate and methylene blue
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2018-01-01
description Hybrid associates formed from colloidal Zn0.5Cd0.5S quantum dots, passivated with thioglycolic acid, europium tenoyltrioteracetonate and methylene blue molecules, absorption, luminescence, IR and time-resolved spectroscopy technique are studied. The shift of the IR absorption bands of COO- and C=O groups of thioglycolic acid and europium thenoyltrifluoroacetonate has been detected. An increase in the efficiency of excitation of europium luminescence and a simultaneous increase lifetime of its luminescence upon adsorption on Zn0.5Cd0.5S quantum dots were found. Addition of methylene blue (thionine) molecules leads to quenching of the trap state luminescence of Zn0.5Cd0.5S and intracentric luminescence of Eu3+. A conclusion about the adsorption of Eu3+ on the surface of Zn0.5Cd0.5S quantum dots and the nonradiative energy transfer to methylene blue molecules was made.
url https://doi.org/10.1051/epjconf/201819004017
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