Stimuli-responsive Mixed-valence Architectures: Synthetic Design and Interplay between Mobile and Introduced Charges

Tahara, Keishiro; Abe, Masaaki

doi:10.1246/cl.200069

Cited by 5 publications

(1 citation statement)

References 142 publications

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“…As another important requirement in fabrication of functional materials in addition to nanostructure regulation by nanoarchitectonics, responding capacities of the materials to external signals are desirably included for advanced functions (Figure 1B). Countless numbers of functional materials have been researched with responding capabilities to various external stimuli such as electrical, [ 27 ] electrochemical, [ 28 ] photonic, [ 29 ] magnetic, [ 30 ] thermal, [ 31 ] chemical, [ 32 ] and biological inputs. [ 33 ] Materials with responding capabilities to these stimuli have structural units specifically sensitive to these stimuli.…”

Section: Introductionmentioning

confidence: 99%

Mechano‐Nanoarchitectonics: Design and Function

Ariga

2022

Small Methods

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Mechanical stimuli have rather ambiguous and less‐specific features among various physical stimuli, but most materials exhibit a certain level of responses upon mechanical inputs. Unexplored sciences remain in mechanical responding systems as one of the frontiers of materials science. Nanoarchitectonics approaches for mechanically responding materials are discussed as mechano‐nanoarchitectonics in this review article. Recent approaches on molecular and materials systems with mechanical response capabilities are first exemplified with two viewpoints: i) mechanical control of supramolecular assemblies and materials and ii) mechanical control and evaluation of atom/molecular level structures. In the following sections, special attentions on interfacial environments for mechano‐nanoarchitectonics are emphasized. The section entitled iii) Mechanical Control of Molecular System at Dynamic Interface describes coupling of macroscopic mechanical forces and molecular‐level phenomena. Delicate mechanical forces can be applied to functional molecules embedded at the air–water interface where operation of molecular machines and tuning of molecular receptors upon macroscopic mechanical actions are discussed. Finally, the important role of the interfacial media are further extended to the control of living cells as described in the section entitled iv) Mechanical Control of Biosystems. Pioneering approaches on cell fate regulations at liquid–liquid interfaces are discussed in addition to well‐known mechanobiology.

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Section: Introductionmentioning

confidence: 99%

Mechano‐Nanoarchitectonics: Design and Function

Ariga

2022

Small Methods

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Stimulus‐Responsive Mixed‐Valence and Related Donor–Acceptor Systems

Shao¹,

Zhong²

2023

Mixed‐Valence Systems

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Redox-Induced Hydrogen Bond Reorientation Mimicking Electronic Coupling in Mixed-Valent Diruthenium and Macrocyclic Tetraruthenium Complexes

et al. 2020

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We present the coordination-driven self-assembly of three tetranuclear metallacycles containing intracyclic NH2, OH, or OMe functionalities through the combination of various isophthalic acid building blocks with a divinylphenylene diruthenium complex. All new complexes of this study were characterized by means of nuclear magnetic resonance spectroscopy, ultrahigh-resolution ESI mass spectrometry, cyclic and square wave voltammetry and, in two cases, X-ray diffraction. The hydroxy functionalized macrocycle 4-BOH and the corresponding half-cycle 2-OH stand out, as their intracyclic OH···O hydrogen bonds stabilize their mixed-valent one- (2-OH, 4-BOH) and three-electron-oxidized states (4-BOH). Despite sizable redox splittings between all one-electron waves, the mixed-valent monocations and trications do not exhibit any intervalence charge-transfer band, assignable to through-bond electronic coupling, but nevertheless display distinct IR band shifts of their charge-sensitive Ru(CO) tags. We ascribe these seemingly contradicting observations to a redox-induced shuffling of the OH···O hydrogen bond(s) to the remaining, more electron-rich, reduced redox site.

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Stimuli-responsive Mixed-valence Architectures: Synthetic Design and Interplay between Mobile and Introduced Charges

Cited by 5 publications

References 142 publications

Mechano‐Nanoarchitectonics: Design and Function

Mechano‐Nanoarchitectonics: Design and Function

Stimulus‐Responsive Mixed‐Valence and Related Donor–Acceptor Systems

Redox-Induced Hydrogen Bond Reorientation Mimicking Electronic Coupling in Mixed-Valent Diruthenium and Macrocyclic Tetraruthenium Complexes

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