Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/9283
Title: Triboluminescent composite microspheres consisting of alginate and EuD(4)TEA crystals
Authors: İncel, Anıl
Demir, Mustafa Muammer
İncel, Anıl
Demir, Mustafa Muammer
Izmir Institute of Technology. Materials Science and Engineering
Keywords: Biopolymer composite
Hydrogel beads
Optical composite
Mechanical sensors
Mechanoluminescence
Issue Date: 2018
Publisher: Elsevier Ltd.
Abstract: Alginate is utilized to obtain luminescent composite microspheres containing europium tetrakis (dibenzoylmethide) triethylammonium (EuD4TEA) triboluminescent (TL) crystals. Na alginate is initially treated with Ca(II) and then Eu (III) so that physically-crosslinked alginate microspheres were obtained. EuD4TEA crystals are precipitated in situ on the surface of the spheres upon treatment with dibenzoylmethane (DBM) and triethylamine (TEA). The EuD4TEA/alginate composite spheres are swollen in aqueous system, the diameter of the microspheres increases from 180 up to 405 pm in 48 h. TL intensity of the spheres swollen in 1 h decreases 4 folds compared to dry spheres; however, it systematically increases as the swelling time is extended step-wise to 48 h. Swelling may develop structural homogenity in the microsphere that supresses the optical scattering and may lead to better transmittance of the TL signal. (C) 2017 Elsevier B.V. All rights reserved.
Description: WOS: 000423887500061
URI: https://doi.org/10.1016/j.sna.2017.12.023
https://hdl.handle.net/11147/9283
ISSN: 0924-4247
Appears in Collections:WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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