Layers dependent properties of magnesium phthalocyanine thin films prepared by Langmuir Blodgett method

Jain, Shikshita; Ridhi, R.; Soleimanioun, Nazilla; Bharti, Shivani; Bhullar, Gurvir Kaur; Tripathi, S. K.

doi:10.1063/1.5097110

Cited by 2 publications

(2 citation statements)

References 9 publications

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“…This technology makes it possible to obtain regular layers with controlled thickness and to create supramolecular structures with a given combination of various material properties under mild condition. There is a large number of works on the preparation of thin-film structures based on porphyrin or phthalocyanine complexes [33][34][35][36][37][38][39][40][41][42][43]. A small number of studies associated with the development of practically attractive monomolecular layers of BODIPY dyes obtained by LS technology has been published [22,23,27,44,45].…”

Section: Introductionmentioning

confidence: 99%

Aggregation Behavior and Spectral Properties of BODIPY Luminophors in Langmuir-Schaefer and Poly(Methyl Methacrylate) Thin Films

Sherudillo¹,

Antina²,

Kazak³

et al. 2023

Liq. Cryst. and their Appl.

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It is known that boron-dipyrromethene (BODIPY) dyes have a remarkable combination of photophysical and photochemical properties in solutions. Unfortunately, these properties are lost in thin films due to aggregation quenching effect (ACQ) and internal filter effect, limiting BODIPY application in optical devices. The introduction of bulky substituents into dye molecule should affect the supramolecular organization of BODIPY in thin films. Therefore, using the example of β-benzyl-substituted complex (1) and bis(BODIPY) dimer (2), we study the influence of bulky substituents at the β, β΄-positions of these BODIPY molecules on their aggregation behavior in mono-and multilayer Langmuir-Schaefer (LS) films. A comparative analysis of BODIPY spectral properties in LS and poly(methyl methacrylate) (PMMA) films has been carried out. It was shown that the presence of bulky benzyl-substituents in β-positions of pyrrole rings promotes the formation of H-and J-type aggregates in multilayer LS-films of the dye 1 and BODIPY dimer 2. The dye 1 predominantly forms H-type aggregates, while for the dye 2, the equilibrium is shifted towards the formation of J-type aggregates. The studied BODIPYs with a low content of up to 1 wt. % exhibit intense fluorescence being included in PMMA films. The results obtained give the possibility to use more efficiently thin-film structures based on the studied BODIPY thin films in optoelectronics.

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Section: Introductionmentioning

confidence: 99%

Aggregation Behavior and Spectral Properties of BODIPY Luminophors in Langmuir-Schaefer and Poly(Methyl Methacrylate) Thin Films

Sherudillo¹,

Antina²,

Kazak³

et al. 2023

Liq. Cryst. and their Appl.

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“…The most common preparation methods of such films are Langmuir–Blodgett, − spin-coating, , and vapor deposition , methods. Out of the different metal–Pc complexes, magnesium Pc (MgPc) stands out in the sense that the first two preparation methods result in a thin film with an intense and broad near-infrared (NIR) absorption peak centered around 815 nm (Figure A, green line), , which is present neither in the recorded spectra of solutions (Figure A, blue line) nor when the film is prepared by the latter preparation method .…”

Section: Introductionmentioning

confidence: 99%

Full Dynamics Description of Mg Phthalocyanine Crystalline and Amorphous Semiconductor Systems

et al. 2021

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Based on visible and mid-infrared transient absorption studies, probing the inter-and intraband dynamics, respectively, of magnesium phthalocyanine (MgPc) organic semiconductors, we were able to develop a model to describe the dynamics and the resulting optical response. We demonstrate how the model could offer insights into the dynamics of more complicated systems such as amorphous MgPc samples obtained by established preparation methods. In particular, we show a clear dimensionality difference of the exciton dissipation mechanism between crystalline and amorphous MgPc, which we resolve in the intraband dynamics, and how this result can also be deduced from the interband dynamics through the implementation of the developed model.

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Layers dependent properties of magnesium phthalocyanine thin films prepared by Langmuir Blodgett method

Cited by 2 publications

References 9 publications

Aggregation Behavior and Spectral Properties of BODIPY Luminophors in Langmuir-Schaefer and Poly(Methyl Methacrylate) Thin Films

Aggregation Behavior and Spectral Properties of BODIPY Luminophors in Langmuir-Schaefer and Poly(Methyl Methacrylate) Thin Films

Full Dynamics Description of Mg Phthalocyanine Crystalline and Amorphous Semiconductor Systems

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