A Nanoscale Molecular Switch Triggered by Thermal, Light, and Guest Perturbation

Duriska, Martin; Neville, Suzanne M.; Moubaraki, Boujemaa; Cashion, J. D.; Halder, Gregory J.; Chapman, Karena W.; Baldé, Chérif; Létard, Jean‐François; Murray, Keith S.; Kepert, Cameron J.; Batten, Stuart Robert

doi:10.1002/anie.200805178

Cited by 173 publications

(75 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[15][16][17][18][19][20][21][22][23][24][25][26][27] Most reported complexes with hysteretic SCO are mononuclear or polymeric Fe II com-pounds, typically with neutral or cationic overall charge. Our group has focused in the search for anionic SCO complexes to increase their processing capabilities when incorporated into hybrid materials.…”

mentioning

confidence: 99%

Enhanced Activity and Acid pH Stability of Prussian Blue-type Oxygen Evolution Electrocatalysts Processed by Chemical Etching

et al. 2016

View full text Add to dashboard Cite

The development of upscalable oxygen evolving electrocatalysts from earth-abundant metals able to operate in neutral or acidic environments and low overpotentials remains a fundamental challenge for the realization of artificial photosynthesis. In this study, we report a highly active phase of heterobimetallic cyanide-bridged electrocatalysts able to promote water oxidation under neutral, basic (pH < 13), and acidic conditions (pH > 1). Cobalt–iron Prussian blue-type thin films, formed by chemical etching of Co(OH)1.0(CO3)0.5·nH2O nanocrystals, yield a dramatic enhancement of the catalytic performance toward oxygen production, when compared with previous reports for analogous materials. Electrochemical, spectroscopic, and structural studies confirm the excellent performance, stability, and corrosion resistance, even when compared with state-of-the-art metal oxide catalysts under moderate overpotentials and in a remarkably large pH range, including acid media where most cost-effective water oxidation catalysts are not useful. The origin of the superior electrocatalytic activity toward water oxidation appears to be in the optimized interfacial matching between catalyst and electrode surface obtained through this fabrication method.

show abstract

mentioning

confidence: 99%

Enhanced Activity and Acid pH Stability of Prussian Blue-type Oxygen Evolution Electrocatalysts Processed by Chemical Etching

et al. 2016

View full text Add to dashboard Cite

show abstract

“…43 The axial positions around each Fe contain two NCS − or one NCS − and one MeCN ligand (solvate), the NCS − /MeCN combination felt responsible for the observed, gradual spin-transition. In a recent review, 65 other pertinent features of these compounds have been highlighted, such as the packing of the nanoballs in the crystals (30% of volume is void space), the resulting porous properties leading to H 2 -and CO 2 guest-sorption, with the Cu I 8 Zn II 6 compound giving very strong H 2 − physisorption.…”

Section: Hexanuclearsmentioning

confidence: 99%

“…A Tp 4-py scorpionate ligand was employed to make the nanoball with tetrahedral Cu I ions in the inner coordination MeCN) building block, (c); the supramolecular nanoball, (d); the polyhedral representation and packing motif. Reproduced with permission from[43]. Copyright Wiley-VCH Verlag GmbH & Co., 2009.…”

mentioning

confidence: 99%

The Development of Spin‐Crossover Research

Murray¹

2013

Spin‐Crossover Materials

View full text Add to dashboard Cite

show abstract

“…Such metalloligands include examples of mononuclear tripodal ligand complexes whose secondary (uncoordinated) donor sites are respectively pyridine [22] and imidazolate [23] nitrogens, with the latter suitably positioned at the terminus of each arm of its tripodal complex This paper is dedicated to Professor Jack Harrowfield and Dr. Jacques Vicens in commemoration of their 70th birthdays.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterisation of two new tripodal metalloligands incorporating zinc(II)

Fanna

Smith

Zhang

et al. 2015

J Incl Phenom Macrocycl Chem

View full text Add to dashboard Cite

The in situ Schiff base condensation of 2-acetylpyrazine with tris(2-aminoethyl)amine in the presence of zinc(II) perchlorate was carried out in absolute ethanol and 95 % ethanol, respectively. Two new tripodal metalloligands, 1 and 2, were isolated. The formation of complexes 1 and 2 has been verified by NMR, mass spectral studies and X-ray (for 2), with the evidence indicating that a zinc ion is incorporated in the tripodal cavity defined by the tren backbone in each case. However the products differed in the number of Schiff base condensation reactions that had occurred. While the use of absolute ethanol resulted in condensation at all three primary amine sites of tris(2-aminoethyl)amine, employing 95 % ethanol yielded condensation at only one of the primary amine sites. These different outcomes can be ascribed, at least in part, to the effect of the different water contents in the respective reaction solvents resulting in a shift of the dynamic equilibrium involving imine formation towards the precursor amine and ketone reagents. In 1, steric considerations dictate that the three uncoordinated pyrazine nitrogen donors will have their coordination vectors oriented in a mutually divergent manner suitable for coordination to three different metal centres when acting as a metalloligand while for 2, the X-ray structure confirms that the single uncoordinated (pendent) pyrazine nitrogen is also oriented for ready coordination to a second metal centre.

show abstract

A Nanoscale Molecular Switch Triggered by Thermal, Light, and Guest Perturbation

Cited by 173 publications

References 35 publications

Enhanced Activity and Acid pH Stability of Prussian Blue-type Oxygen Evolution Electrocatalysts Processed by Chemical Etching

Enhanced Activity and Acid pH Stability of Prussian Blue-type Oxygen Evolution Electrocatalysts Processed by Chemical Etching

The Development of Spin‐Crossover Research

Synthesis and characterisation of two new tripodal metalloligands incorporating zinc(II)

Contact Info

Product

Resources

About