Building Up Colors: Multilayered Arrays of Peryleneimides on Flat Surfaces and Mesoporous Layers. Issue 5 (7th April 2017)

• Record Type: Journal Article
• Authors: George, Lijo; Efimova, Elena; Sariola‐Leikas, Essi; Lahtonen, Kimmo; Valden, Mika; Vivo, Paola; Hakola, Hanna; Hiltunen, Arto; Efimov, Alexander
• Is Part Of: ChemPlusChem. Volume 82:Issue 5(2017)
• Page Start: 705
• Page End: 715
• Publication Date: 2017-04-07
• Subjects: dyes/pigments -- mesoporous materials -- photoelectron spectroscopy -- supramolecular chemistry -- surface chemistry; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cplu.201700061
• Languages: English
• ISSNs: 2192-6506

Abstract

Abstract: Novel monoisomeric perylene imide derivatives with terpyridinyl and pyrrolidinyl substituents were synthesized and deposited onto solid substrates, such as a thin film of Al2 O3 and mesoporous TiO2 nanoparticle layer, by using a simple dip‐by‐dip method. Arrays of up to 33 layers were built on Al2 O3 . In the case of mesoporous TiO2, the interstitial volume between the particles was filled up with dye assemblies. Deposition could produce either layers of microcrystals or molecular layers if an appropriate washing procedure was used. The resultant arrays were studied by means of scanning electron microscopy, X‐ray photoelectron spectroscopy measurements, and UV/Vis absorption. Abstract : Filling up the pores : Multilayers composed of perylene dyes are deposited on thin Al2 O3 layers and mesoporous TiO2 by a simple dip‐by‐dip process. As many as 33 layers can be grown on Al2 O3, whereas the voids between particles of mesoporous TiO2 can be bridged with dye layers (see figure). Microcrystal growth during the process can be controlled by employing appropriate washing techniques.