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Journal of Sol-Gel Science and Technology
Erschienen in: Journal of Sol-Gel Science and Technology 3/2018

15.05.2018 | Original Paper: Sol-gel and hybrid materials for optical, photonic and optoelectronic applications

Silica-coating of quantum nanorods by a sol–gel process and their photo-bleaching properties

verfasst von: Mai Yokokawa, Ting-ting Li, Masaya Kambayashi, Kouichi Nakashima, Yuki Hirayama, Hiroshi Okura, Masaki Hasegawa, Stephan Dertinger, Yoshio Kobayashi

Erschienen in: Journal of Sol-Gel Science and Technology | Ausgabe 3/2018

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Abstract

This paper describes silica-coating of rod-structured nanoparticles composed of cadmium compounds, or quantum rods (QR), by means of a sol–gel method. QRs surface-modified with polyethyleneimine (PEI) (QR/PEI) had an average lateral size of 6.7 ± 0.9 nm and an average longitudinal size of 24.4 ± 2.5 nm. Silica-coated QR nanoparticles (QR/SiO2) were fabricated with a sol–gel process using water, sodium hydroxide, and tetraethylorthosilicate in ethanol in the presence of the QR/PEI nanoparticles. The QR/SiO2 nanoparticles were core-shell particles composed of the QRs as the core, the PEI as the matrix, and the silica as the shells. The colloid solution of QR/SiO2 nanoparticles showed more stable fluorescence to aging in a dark box in atmosphere at room temperature than that of QR/PEI nanoparticles.
Vorheriger Artikel Capacitance performance of carbon paper supercapacitor using redox-mediated gel polymer electrolyte
Nächster Artikel Study of visible light emission under UV excitation in Y2O3:Er3+-Gd3+ and Y2O3:Eu3+-Gd3+ nanocrystals

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Metadaten
Titel
Silica-coating of quantum nanorods by a sol–gel process and their photo-bleaching properties
verfasst von
Mai Yokokawa
Ting-ting Li
Masaya Kambayashi
Kouichi Nakashima
Yuki Hirayama
Hiroshi Okura
Masaki Hasegawa
Stephan Dertinger
Yoshio Kobayashi
Publikationsdatum
15.05.2018
Verlag
Springer US
Erschienen in
Journal of Sol-Gel Science and Technology / Ausgabe 3/2018
Print ISSN: 0928-0707
Elektronische ISSN: 1573-4846
DOI
https://doi.org/10.1007/s10971-018-4674-2

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