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Title:Diketopyrrolopyrrole pigment core@multi-layer SiO2 shell with improved photochemical stability
Authors:ID Švara Fabjan, Erika (Author)
ID Saghi, Zineb (Author)
ID Midgley, Paul A. (Author)
ID Otoničar, Mojca (Author)
ID Dražić, Goran (Author)
ID Gaberšček, Miran (Author)
ID Sever Škapin, Andrijana (Author)
Files:URL URL - Source URL, visit https://doi.org/10.1016/j.dyepig.2018.03.064
 
.pdf PDF - Presentation file, download (1,78 MB)
MD5: C0519BA54373E08FEE55439CC86D79C4
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo ZAG - Slovenian National Building and Civil Engineering Institute
Abstract:A model organic pigment (diketopyrrolopyrrole) is encapsulated by a silica coating in order to improve its photochemical stability. Unlike in previous works where single-layer silica coatings were used for similar purposes, we here propose creation of a multi-layer silica shell synthesized via in-situ sol-gel method, which should significantly improve the homogeneity and thus the protection ability of the coating. This is done by repeating the basic two-step process (pigment surface modification and silica encapsulation) several times, creating the final protective shell in a layer-by-layer fashion. The compositional and structural properties of the prepared coatings is studied using Fourier-transform infrared spectroscopy, differential thermal and thermogravimetric analysis, nitrogen adsorption measurements and transmission electron microscopy. Photochemical stability of non-encapsulated and encapsulated pigment particles is evaluated via the so-called fast-irradiation method. Various correlations between the essential coating properties, such as thickness, porosity, SiO2 content, and the corresponding photochemical stability of the samples are established and discussed in detail. As a whole, our results confirm the basic hypothesis, that multiple-layered silica shells show improved pigment protection ability in comparison to the single-layer coatings.
Keywords:organic pigments, silica coating, encapsulation, morphology, photocemical stability
Publication status:Published
Publication version:Version of Record
Publication date:29.03.2018
Publisher:Elsevier
Year of publishing:2018
Number of pages:str. 108-115
Numbering:Vol. 156
PID:20.500.12556/DiRROS-18572 New window
UDC:54
ISSN on article:0143-7208
DOI:10.1016/j.dyepig.2018.03.064 New window
COBISS.SI-ID:2357351 New window
Copyright:© 2018 The Authors. Published by Elsevier Ltd.
Note:Sodelavci: Zineb Saghi, Paul A. Midgley, Mojca Otoničar, Goran Dražić, Miran Gaberšček, Andrijana Sever Škapin;
Publication date in DiRROS:27.03.2024
Views:972
Downloads:384
Metadata:XML DC-XML DC-RDF
:
ŠVARA FABJAN, Erika, SAGHI, Zineb, MIDGLEY, Paul A., OTONIČAR, Mojca, DRAŽIĆ, Goran, GABERŠČEK, Miran and SEVER ŠKAPIN, Andrijana, 2018, Diketopyrrolopyrrole pigment core@multi-layer SiO2 shell with improved photochemical stability. Dyes and pigments [online]. 2018. Vol. 156, p. 108–115. [Accessed 7 April 2025]. DOI 10.1016/j.dyepig.2018.03.064. Retrieved from: https://dirros.openscience.si/IzpisGradiva.php?lang=eng&id=18572
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Record is a part of a journal

Title:Dyes and pigments
Shortened title:Dyes pigm.
Publisher:Elsevier
ISSN:0143-7208
COBISS.SI-ID:25357056 New window

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:P2-0273
Name:Gradbeni objekti in materiali
Funder:ARRS - Slovenian Research Agency
Project number:Z1-8149
Name:Kolorimetrično določanje relativne vlažnosti na osnovi mezoporoznih SiO2 delcev

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:01.09.2018
Applies to:Text and Data Mining valid from 2018-09-01 Version of Record valid from 2018-10-25

Secondary language

Language:Slovenian
Keywords:organski pigmenti, SiO2 sloj, enkapsulacija, morfologija, fotokemijska stabilnost


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