Conjugated Coordination Nanosheets with Molecular Rotors for Pseudocapacitors: Nanoarchitectonics and Enhanced Performance. DOI Open Access
Amal Kumar Mandal,

Vishwakarma Ravikumar Ramlal,

Kinjal B. Patel

et al.

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(67)

Published: Aug. 13, 2024

Abstract High‐level pseudocapacitive materials require incorporations of significant redox regions into conductive and penetrable skeletons to enable the creation devices capable delivering high power for extended periods. Coordination nanosheets (CNs) are appealing their natural electrical conductivities, huge explicit surface regions, semi‐one‐layered adjusted pore clusters. Thus, rational design ligands topological networks with desired electronic structure is required advancement in this field. Herein, we report three novel conjugated CNs (RV‐10‐M, M=Zn, Ni, Co), by utilizing full conjugation terpyridine‐attached flexible tetraphenylethylene (TPE) units as molecular rotors at center. We prepare binder‐free transparent supported on Ni‐foam outstanding properties via a hydrothermal route followed facile exfoliation. Among CNs, area RV‐10‐Co facilitates fast transport ions electrons could achieve specific capacity 670.8 C/g (1677 F/g) 1 A/g current density. Besides, corresponding possesses maximum energy density 37.26 Wh kg −1 171 W 70 % capacitance retention even after 1000 cycles.

Language: Английский

Materials Nanoarchitectonics: Collaboration between Chem, Nano and Mat DOI
Katsuhiko Ariga

ChemNanoMat, Journal Year: 2023, Volume and Issue: 9(7)

Published: April 4, 2023

Abstract Nanoarchitectonics is the methodology for production of functional materials from nano‐units. In nanoarchitectonics, conversion molecules (chemistry, Chem), control nanostructures (nanotechnology, Nano), and (materials science, Mat) are essential elements. order to explain contribution Chem, Nano, Mat this review article described according two major sections, Chem & Nano Mat. section, integration chemistry nanotechnology overviewed, next Mat, illustrates how nanomaterials architecturally transformed into materials. These include supramolecular polymers metal‐organic frameworks, which have attracted widespread attention, as well emerging areas such organic reactions by nanotechnology, chemical synthesis in nanospace, material creation dynamic motions at interfaces. It emphasized that Chem+Nano+Mat nanoarchitectonics.

Language: Английский

Citations

11
Electrically Conductive Multivariate Coordination Nanosheets DOI Creative Commons
Kenji Takada, Hiroaki Maeda, Naoya Fukui

et al.

Coordination chemistry research., Journal Year: 2025, Volume and Issue: unknown, P. 100006 - 100006

Published: March 1, 2025

Language: Английский

Citations

0
Rationally Engineered Heterometallic Metalladithiolene Coordination Nanosheets with Defined Atomic Arrangements DOI Creative Commons
M. Ito, Naoya Fukui, Kenji Takada

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 5, 2025

Abstract Coordination nanosheets are 2D polymers formed by coordination bonds between metal ions and planar organic molecules. They offer high molecular design freedom unique electronic chemical properties, making them suitable for various usage. In the two‐phase interfacial reaction of with benzenehexathiol (BHT), highly conductive generated. For nickel ions, porous NiDT (=Ni 3 BHT 2 ) nonporous NiBHT BHT) structures obtained. However, a rational selective synthesis method these is not well‐developed. this study, colloidal solutions achieved adjusting to ion ratio in single phase. These serve as hydrogen evolution catalysts coating on an electrode better catalyst than NiBHT. CuBHT ZnBHT also successfully prepared. Furthermore, NiCu new material, NiZn synthesized filling pores another BHT. approaches lead production nanosheet inks heterometallic controlled structures. The introduction second significantly changes electrical conductivity. discovered convert using transmetallation reaction.

Language: Английский

Citations

0
Lateral Heterometal Junction Rectifier Fabricated by Sequential Transmetallation of Coordination Nanosheet** DOI Creative Commons
Choon Meng Tan, Naoya Fukui, Kenji Takada

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(9)

Published: Jan. 5, 2024

Abstract Heterostructures of two‐dimensional materials realise novel and enhanced physical phenomena, making them attractive research targets. Compared to inorganic materials, coordination nanosheets have virtually infinite combinations, leading tunability properties are promising candidates for heterostructure fabrication. Although stacking into vertical heterostructures is widely reported, reports lateral material few. Here we show the successful fabrication a seamless heterojunction showing diode behaviour, by sequential spatially limited immersion new metalladithiolene nanosheet, Zn 3 BHT, aqueous Cu(II) Fe(II) solutions. Upon immersion, centres in insulating BHT replaced Cu or Fe ions, resulting conductivity. The transmetallation confined, occurring only within immersed area. We anticipate that our results will be starting point towards exploring various produce heterojunctions, providing facile synthetic route.

Language: Английский

Citations

3
Modulation between capacitor and conductor for a redox-active 2D bis(terpyridine)cobalt(II) nanosheet via anion-exchange DOI Creative Commons
Kenji Takada, M. Ito, Naoya Fukui

et al.

Communications Chemistry, Journal Year: 2024, Volume and Issue: 7(1)

Published: Aug. 22, 2024

Abstract Ionic polymers are intriguing materials whose functionality arises from the synergy between ionic polymer backbones and counterions. A key method for enhancing their is post-synthetic ion-exchange reaction, which instrumental in improving chemical physical properties of introducing functionalities Electronic interaction host backbone guest ions plays pivotal roles property modulation. The current study highlights modulation responses to external electric field cationic bis(terpyridine)cobalt(II) nanofilms through anion-exchange reactions. Initially, as-prepared chloride-containing exhibited supercapacitor behaviour. Introducing anionic metalladithiolenes into altered behaviour either conductive or insulative, depending on valence metalladithiolenes. This was accomplished by fine tuning charge-transfer interactions complex moieties redox-active anions. Our findings open up new avenue polymers, showcasing potential as versatile platform science.

Language: Английский

Citations

3
Face-on-oriented formation of bis(diimino)metal coordination nanosheets on gold electrodes by electrochemical oxidation DOI Creative Commons
Hiroaki Maeda, Kenji Takada, Naoya Fukui

et al.

New Journal of Chemistry, Journal Year: 2024, Volume and Issue: 48(14), P. 6081 - 6087

Published: Jan. 1, 2024

Bis(diimino)metal coordination nanosheets (MHABs) were successfully synthesized in a face-on orientation manner on gold electrodes using electrochemical oxidation methods under optimal reaction conditions.

Language: Английский

Citations

2
Bis(diimino)nickel Coordination Nanosheets Modified with Triptycene Moieties for Facile Exfoliation and Enhanced Hydrogen Evolution Catalytic Activity DOI Creative Commons
Hiroaki Maeda, Yuta Sudo,

Sayoko Nagashima

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(11), P. 13775 - 13784

Published: June 6, 2024

Two-dimensional, π-conjugated coordination nanosheets (CONASHs) have attracted significant attention because of their potential applications in electronics and electrode materials. However, multilayer stacking induced by π–π interlayer interaction originating from flat chemical structures shields the metal complex sites decreases performance. The triptycene-linker ligands CONASHs form square-planar complexes perpendicular to horizontal planes nanosheets, C–H bonds ligand are directed out plane. These features prevent interactions expose axial positions pores. In this study, 2,3,6,7,14,15-hexaaminotriptycene (HATT) was used as a synthesize triptycene-bridged bis(diimino)nickel (Ni-HATT) film using gas–liquid interfacial synthesis method. Facile exfoliation into thin several nanometers thick with lateral dimensions few micrometers achieved ultrasonication isopropanol owing weakened interactions. Furthermore, Ni-HATT-modified electrodes prepared an electrochemical oxidation method exhibited greater hydrogen evolution reaction (HER) electrocatalytic performance than modified conventional CONASH composed flat-conjugated easy access active realized structure design obtained introduction HATT ligand.

Language: Английский

Citations

1
Repurposing Discarded Porphyrin Waste as Electrocatalysts for the Oxygen Reduction Reaction DOI Creative Commons

Nicolò Giulini,

Mohsin Muhyuddin, Sara Mattiello

et al.

Electrochimica Acta, Journal Year: 2024, Volume and Issue: unknown, P. 145113 - 145113

Published: Sept. 1, 2024

Language: Английский

Citations

1
Lateral Heterometal Junction Rectifier Fabricated by Sequential Transmetallation of Coordination Nanosheet** DOI Creative Commons
Choon Meng Tan, Naoya Fukui, Kenji Takada

et al.

Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(9)

Published: Jan. 5, 2024

Abstract Heterostructures of two‐dimensional materials realise novel and enhanced physical phenomena, making them attractive research targets. Compared to inorganic materials, coordination nanosheets have virtually infinite combinations, leading tunability properties are promising candidates for heterostructure fabrication. Although stacking into vertical heterostructures is widely reported, reports lateral material few. Here we show the successful fabrication a seamless heterojunction showing diode behaviour, by sequential spatially limited immersion new metalladithiolene nanosheet, Zn 3 BHT, aqueous Cu(II) Fe(II) solutions. Upon immersion, centres in insulating BHT replaced Cu or Fe ions, resulting conductivity. The transmetallation confined, occurring only within immersed area. We anticipate that our results will be starting point towards exploring various produce heterojunctions, providing facile synthetic route.

Language: Английский

Citations

1
Terpyridine-zinc(ii) coordination nanosheets as modulators of perovskite crystallization to enhance solar cell efficiency DOI
Ying‐Chiao Wang, C. C. Chiang, Chun‐Jen Su

et al.

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(13), P. 7077 - 7084

Published: Jan. 1, 2023

ZnTPY-chelated PbI 2 nuclei effectively reduce the activation energy of perovskite crystallization resulting in higher conversion into uniform crystalline films, which ultimately improves performance solar cells.

Language: Английский

Citations

3