Fused aromatic networks with the different spatial arrangement of structural units

Kim, Seok‐Jin; Kim, Tea-Hoon; Ahmad, Ishfaq; Noh, Hyuk‐Jun; Jung, Sun‐Min; Im, Yoon‐Kwang; Mahmood, Javeed; Bae, Youn‐Sang; Baek, Jong‐Beom

doi:10.1016/j.xcrp.2021.100502

Cited by 3 publications

(2 citation statements)

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“…In contrast, it is well known that large aromatic systems have a tendency to exhibit multiple stacking interactions. − Thus, the preferential formation of the aforementioned anion−π interactions can be attributed to the predominance of multiple C–O binding over bulk π–π stacking. To analyze these contacts, we employed quantum chemical calculations.…”

Section: Resultsmentioning

confidence: 99%

Noncovalent Dualism in Perylene-Diimide-Based Keggin Anion Complexes: Theoretical and Experimental studies

Popova,

Kulik,

Samoilova

et al. 2023

Inorg. Chem.

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We report the synthesis and comprehensive characterization of organic−inorganic hybrid salts formed by bis-cationic N,N′-bis(2-(trimethylammonium)ethylene)perylene-3,4,9,10-tetracarboxylic acid bisimide (PTCD 2+ ) and Keggin-type 3) were structurally characterized by single crystal X-ray diffraction. The cations in both structures exhibited infinite chainlike arrangements through π−π interactions, contrasting with the previously reported cation−anion stacking observed in naphthalene diimide derivatives. A detailed theoretical study employing topological analysis of the electron density distribution within the quantum theory of atoms in molecules approach provided further insights into this structural dualism. Atomic force microscopy analyses revealed the formation of self-assembled supramolecular structures on graphite from molecular monolayers (3 nm of thick) to submicrometer aggregates for 2. Hyperspectral Raman spectroscopy imaging revealed that such heterostructures are likely formed by an enhanced π−π interactions. Both complexes demonstrated interesting electrochemical behavior, photoluminescence and Xray-induced luminescence. Electron spin resonance analysis confirmed charge separation in both compounds, with enhanced efficiency observed in compound 2. Our findings of these perylene-based organic−inorganic hybrid salts offer the potential for their application in optoelectronic devices and functional materials.

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Section: Resultsmentioning

confidence: 99%

Noncovalent Dualism in Perylene-Diimide-Based Keggin Anion Complexes: Theoretical and Experimental studies

Popova,

Kulik,

Samoilova

et al. 2023

Inorg. Chem.

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“…On the other hand, the pyrazine linkage introduces simultaneously two electron-withdrawing nitrogen atoms in the framework. This exchange of Catoms for Natoms in specific sites has given rise to materials with alot of potential in electronics, [2,4] photovoltaics, [5] gas separation and storage, [6] membranes for proton conduction [7] and water purification, [8] organic catalysts, [9] and metal-free electrodes for the oxygen reduction reaction, [10] oxygen evolution reaction, [11] supercapacitors, [12] and batteries. [13] Increasing the pore size of 2D FANs would allow the diffusion and encapsulation of organic,inorganic and biological macromolecules and would make available materials that combine both larger band gaps [14] and porosities,b roadening the application scope of 2D FANs into other fields,s uch as sensing and heterogeneous catalysis.H owever,s ynthesising 2D FANs with larger dimensions is ad ifficult task.…”

Section: Introductionmentioning

confidence: 99%

An Expanded 2D Fused Aromatic Network with 90‐Ring Hexagons

et al. 2021

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Two-dimensional fused aromatic networks (2D FANs) have emerged as ah ighly versatile alternative to holey graphene.T he synthesis of 2D FANs with increasingly larger lattice dimensions will enable new application perspectives.H owever,t he synthesis of larger analogues is mostly limited by lack of appropriate monomers and methods.Herein, we describe the synthesis,characterisation and properties of an expanded 2D FANw ith 90-ring hexagons,w hiche xceed the largest 2D FANl attices reported to date.

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