Metal (tetraamino)phthalocyanine electrodeposited layers: The effect of central metal atom on chemical structure, morphology, optical and photochemical properties. (June 2023)

• Record Type: Journal Article
• Authors: Gusev, Ivan; Ferreira, Marli; Krzywiecki, Maciej; Przybyła, Aleksandra; Pluczyk-Małek, Sandra; Nastula, Dawid; Duda, Alicja; Nastula, Klaudia; Erfurt, Karol; Data, Przemysław; Blacha-Grzechnik, Agata
• Is Part Of: Dyes and pigments. Volume 214(2023)
• Publication Date: 2023-06
• Subjects: Metal phthalocyanines -- Photoactive layers -- Singlet oxygen -- Reactive oxygen species -- Electrochemical deposition; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2023.111217
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: Metal phthalocyanine layers were formed on ITO in a process of electrochemical deposition from a solution of a metal (tetraamino)phthalocyanine (MPcNH2 ). Three MPcNH2 were investigated: with Zn, Al or Cu as a central metal atom. The chemical structure and properties of the electrodeposited photoactive layers, (MPcNH2 )layer, were widely-characterized by UV–Vis, infrared (ATR-IR), Raman and X-ray photoelectron (XPS) spectroscopies and scanning electron (SEM) and atomic force microscopies (AFM). The photochemical activity towards generation of singlet oxygen or other reactive oxygen species was investigated applying indirect method with 1, 3-diphenylisobenzofuran (DPBF) or α-terpinene as a chemical trap. It was shown that while the outer primary amino group governs the electrodeposition process, the properties of the resulting layers depends mainly on the type of central metal atom. Highlights: Metal phthalocyanines containing outer –NH2 groups were electrodeposited on ITO. Presence of –NH2 induces aniline-like mechanism of electrodeposition. Effectiveness of electrodeposition process depends on central metal. All layers (Cu-, Al-, Zn-) were able to produce reactive oxygen species (ROS). Layers with Zn- and Al-phthalocyanines were able to photogenerate singlet oxygen.