Electrochemical Synthesis and Crystal Structure of the Organic Ion Intercalated Superconductor (TMA)0.5Fe2Se2 with Tc = 43 K

Rendenbach, Bettina; Hohl, Timotheus; Harm, Sascha; Hoch, Constantin; Johrendt, Dirk

doi:10.1021/jacs.0c13396

Cited by 31 publications

(19 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Wie Hoch und Johrendt zeigen, lässt sich Tetramethylammonium (TMA) in β-FeSe-Einkristalle auf einer Quecksilberelektrode interkalieren, und zwar aus Lösung. 51) Dabei steigt in der gewonnenen Verbindung (TMA) 0,5 Fe 2 Se 2 die kritische Temperatur T c von 8 K auf 43 K.…”

Section: Quadratisch Topologisch Gutunclassified

Trendbericht Festkörperchemie 2022

Wolf¹,

Klemenz²,

Bruns³

2022

Nachr Chem

View full text Add to dashboard Cite

show abstract

Section: Quadratisch Topologisch Gutunclassified

Trendbericht Festkörperchemie 2022

Wolf¹,

Klemenz²,

Bruns³

2022

Nachr Chem

View full text Add to dashboard Cite

show abstract

“…Tetramethylammonium ions (TMA + ) were intercalated into β‐FeSe to obtain the intercalation compound (TMA) 0.5 Fe 2 Se 2 . [ 178 ] The intercalation compound has a structure in I 2m space group, and two of H atoms in the CH 3 groups form hydrogen bridges with Se atoms as shown in Figure 13f. The superconducting transition temperature of (TMA) 0.5 Fe 2 Se 2 is around 43 K (Figure 13g).…”

Section: Applications Of Intercalation In 2d Materialsmentioning

confidence: 99%

Intercalation Strategy in 2D Materials for Electronics and Optoelectronics

Wang

et al. 2021

Small Methods

View full text Add to dashboard Cite

Intercalation is an effective approach to tune the physical and chemical properties of 2D materials due to their abundant van der Waals gaps that can host high‐density intercalated guest matters. This approach has been widely employed to modulate the optical, electrical, and photoelectrical properties of 2D materials for their applications in electronic and optoelectronic devices. Thus it is necessary to review the recent progress of the intercalation strategy in 2D materials and their applications in devices. Herein, various intercalation strategies and the novel properties of the intercalated 2D materials as well as their applications in electronics and optoelectronics are summarized. In the end, the development tendency of this promising approach for 2D materials is also outlined.

show abstract

“…Here, the intercalation process is alkali metal free, and the chalcogenide matrix is reduced in an electrochemical intercalation process. Currently, three materials intercalated with the following cations such as cetyltrimethylammonium (CTA) (Shi et al, 2018 ) with T c = 45 K, tetrabutylammonium (TBA) with record high T c = 50 K, and the third one intercalated with tetramethylammonium (TMA) (Rendenbach et al, 2021 ) showing T c = 43 K, obtained by this method are known. All of them are characterized by critical temperatures comparable to iron selenides intercalated with ammonia/amine solvates of alkali metals, and the presence of organic cations only between the layers of the inorganic host.…”

Section: Intercalated Iron Selenide—the Influence Of the Chemical And Electrochemical Nature Of Intercalating Species On The Crystal Strumentioning

confidence: 99%

“…Left panel: structural model of tetramethylammonium- (TMA-) intercalated FeSe (a) , doubled unit cell (b) , full structural model of (TMA) 0.5 Fe 2 Se 2 in the space group I42m with hydrogen bridges shown as dashed bonds (c) , space-filling model (d) and view perpendicular to the TMA+ layers (e) . Right panel: structural models proposed for intercalation containing cetyltrimethylammonium (CTA) and tetrabutylammonium (TBA) cations [Reprinted with permission from Rendenbach et al ( 2021 ) and Shi et al ( 2018 )].…”

Section: Intercalated Iron Selenide—the Influence Of the Chemical And Electrochemical Nature Of Intercalating Species On The Crystal Strumentioning

confidence: 99%

Intercalated Iron Chalcogenides: Phase Separation Phenomena and Superconducting Properties

Krztoń‐Maziopa

2021

Front. Chem.

View full text Add to dashboard Cite

Organic molecule-intercalated layered iron-based monochalcogenides are presently the subject of intense research studies due to the linkage of their fascinating magnetic and superconducting properties to the chemical nature of guests present in the structure. Iron chalcogenides have the ability to host various organic species (i.e., solvates of alkali metals and the selected Lewis bases or long-chain alkylammonium cations) between the weakly bound inorganic layers, which opens up the possibility for fine tuning the magnetic and electrical properties of the intercalated phases by controlling both the doping level and the type/shape and orientation of the organic molecules. In recent years, significant progress has been made in the field of intercalation chemistry, expanding the gallery of intercalated superconductors with new hybrid inorganic–organic phases characterized by transition temperatures to a superconducting state as high as 46 K. A typical synthetic approach involves the low-temperature intercalation of layered precursors in the presence of liquid amines, and other methods, such as electrochemical intercalation, intercalant or ion exchange, and direct solvothermal growths from anhydrous amine-based media, are also being developed. Large organic guests, while entering a layered structure on intercalation, push off the inorganic slabs and modify the geometry of their internal building blocks (edge-sharing iron chalcogenide tetrahedrons) through chemical pressure. The chemical nature and orientation of organic molecules between the inorganic layers play an important role in structural modification and may serve as a tool for the alteration of the superconducting properties. A variety of donor species well-matched with the selected alkali metals enables the adjustment of electron doping in a host structure offering a broad range of new materials with tunable electric and magnetic properties. In this review, the main aspects of intercalation chemistry are discussed, involving the influence of the chemical and electrochemical nature of intercalating species on the crystal structure and critical issues related to the superconducting properties of the hybrid inorganic–organic phases. Mutual relations between the host and organic guests lead to a specific ordering of molecular species between the host layers, and their effect on the electronic structure of the host will be also argued. A brief description of a critical assessment of the association of the most effective chemical and electrochemical methods, which lead to the preparation of nanosized/microsized powders and single crystals of molecularly intercalated phases, with the ease of preparation of phase pure materials, crystal sizes, and the morphology of final products is given together with a discussion of the stability of the intercalated materials connected with the volatility of organic solvents and a possible degradation of host materials.

show abstract

Electrochemical Synthesis and Crystal Structure of the Organic Ion Intercalated Superconductor (TMA)_0.5Fe₂Se₂ with T_c = 43 K

Cited by 31 publications

References 51 publications

Trendbericht Festkörperchemie 2022

Trendbericht Festkörperchemie 2022

Intercalation Strategy in 2D Materials for Electronics and Optoelectronics

Intercalated Iron Chalcogenides: Phase Separation Phenomena and Superconducting Properties

Contact Info

Product

Resources

About