Magneto-optical investigations of molecular nanomagnet monolayers

Rozbořil, Jakub; Rechkemmer, Yvonne; Bloos, D.; Münz, F.; Wang, C. N.; Neugebauer, Petr; Čechal, Jan; Novák, Jiřı́; Slageren, Joris van

doi:10.1039/c6dt00839a

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…As we deal with natural optical activity and not with magneto-optical phenomena, we will overlook magnetic circular dichroism (MCD) and magneto-chiral dichroism (MChD), which are based, respectively, on the interaction between linearly polarized and nonpolarized light with achiral or chiral systems subjected to a magnetic field. ,, Both techniques have been employed for the characterization of π-conjugated systems, especially metalloporphyrin and metallophthalocyanine derivatives, including a few measurements on thin films. − …”

Section: Chiroptical Spectroscopies: Survey and Basic Conceptsmentioning

confidence: 99%

Chiroptical Properties in Thin Films of π-Conjugated Systems

2020

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Chiral π-conjugated molecules provide new materials with outstanding features for current and perspective applications, especially in the field of optoelectronic devices. In thin films, processes such as charge conduction, light absorption, and emission are governed not only by the structure of the individual molecules but also by their supramolecular structures and intermolecular interactions to a large extent. Electronic circular dichroism, ECD, and its emission counterpart, circularly polarized luminescence, CPL, provide tools for studying aggregated states and the key properties to be sought for designing innovative devices. In this review, we shall present a comprehensive coverage of chiroptical properties measured on thin films of organic π-conjugated molecules. In the first part, we shall discuss some general concepts of ECD, CPL, and other chiroptical spectroscopies, with a focus on their applications to thin film samples. In the following, we will overview the existing literature on chiral π-conjugated systems whose thin films have been characterized by ECD and/or CPL, as well other chiroptical spectroscopies. Special emphasis will be put on systems with large dissymmetry factors (g abs and g lum) and on the application of ECD and CPL to derive structural information on aggregated states.

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Section: Chiroptical Spectroscopies: Survey and Basic Conceptsmentioning

confidence: 99%

Chiroptical Properties in Thin Films of π-Conjugated Systems

2020

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“…There are two main routes to produce nanostructured magnetic surfaces – either by the thermal sublimation of SIM molecules under vacuum 24–26 or via a wet-chemistry protocol from solutions. 27,28 Despite an earlier approach allowing precise surface functionalization in a well-defined and pure manner, the process often requires sufficient thermal stability and neutral molecules. On the other hand, wet techniques are sufficient for charged SIMs and are usually only limited by the solubility of coordination compounds in the organic volatile solvents used for surface deposition.…”

Section: Introductionmentioning

confidence: 99%

Pentacoordinate cobalt(ii) single ion magnets with pendant alkyl chains: shall we go for chloride or bromide?

Juráková

Midlíková

Hrubý

et al. 2022

Inorg. Chem. Front.

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“…There are two main ways to produce nanostructured magnetic thin films. They can be deposited onto a substrate via a wet-chemistry protocol from a solution [26][27][28] or by thermal sublimation in vacuum [29][30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Deposition of Tetracoordinate Co(II) Complex with Chalcone Ligands on Graphene

et al. 2020

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Studying the properties of complex molecules on surfaces is still mostly an unexplored research area because the deposition of the metal complexes has many pitfalls. Herein, we probed the possibility to produce surface hybrids by depositing a Co(II)-based complex with chalcone ligands on chemical vapor deposition (CVD)-grown graphene by a wet-chemistry approach and by thermal sublimation under high vacuum. Samples were characterized by high-frequency electron spin resonance (HF-ESR), XPS, Raman spectroscopy, atomic force microscopy (AFM), and optical microscopy, supported with density functional theory (DFT) and complete active space self-consistent field (CASSCF)/N-electron valence second-order perturbation theory (NEVPT2) calculations. This compound’s rationale is its structure, with several aromatic rings for weak binding and possible favorable π–π stacking onto graphene. In contrast to expectations, we observed the formation of nanodroplets on graphene for a drop-cast sample and microcrystallites localized at grain boundaries and defects after thermal sublimation.

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Magneto-optical investigations of molecular nanomagnet monolayers

Cited by 5 publications

References 26 publications

Chiroptical Properties in Thin Films of π-Conjugated Systems

Chiroptical Properties in Thin Films of π-Conjugated Systems

Pentacoordinate cobalt(ii) single ion magnets with pendant alkyl chains: shall we go for chloride or bromide?

Deposition of Tetracoordinate Co(II) Complex with Chalcone Ligands on Graphene

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