A single-stranded coordination copolymer affords heterostructure observation and photoluminescence intensification

Toyoda, Ryojun; Sakamoto, Ryota; Fukui, Naoya; Matsuoka, Ryota; Tsuchiya, Mizuho; Nishihara, Hiroshi

doi:10.1126/sciadv.aau0637

Cited by 11 publications

(3 citation statements)

References 54 publications

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“…Sakamoto and co-workers presented methods for observation and evaluation of asymmetric heterostructures of a single-stranded coordination copolymer (Figure 28). 144 The formed one-dimensional coordination copolymers have bis(dipyrrinato)zinc complex as their main chain motif. Various random copolymers with this structural feature were prepared with two kinds of bridging dipyrrin proligand and zinc acetate in various proligand ratios.…”

Section: Supporting Techniquementioning

confidence: 99%

Nanoarchitectonics for Coordination Asymmetry and Related Chemistry

Ariga

Shionoya

2020

Bulletin of the Chemical Society of Japan

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Nanoarchitectonics is a concept envisioned to produce functional materials from nanoscale units through fusion of nanotechnology with other scientific disciplines. For component selection, coordination complexes with metallic elements have a wider variety of element selection because metallic elements cover ca. 80% of the periodic table of the elements. Application of nanoarchitectonics approaches to coordination chemistry leads to huge expansion of this concept to a much wider range of elements. Especially, coordination asymmetry strategy architects asymmetrical and/or chiral structures and/or electronic states through formation of metal coordination complexes, leading to functional material systems in certain anisotropy and selectivity. This review article presents expansion of the nanoarchitectonics concept to coordination asymmetry through collecting recent examples in the field of coordination asymmetry. Introduced examples are classified into several categories from various viewpoints: (i) basic molecular and material designs; (ii) specific features depending on interfacial media, space and contact with bio-functions; (iii) functions; (iv) supporting techniques such as analyses and theory.

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Section: Supporting Techniquementioning

confidence: 99%

Nanoarchitectonics for Coordination Asymmetry and Related Chemistry

Ariga

Shionoya

2020

Bulletin of the Chemical Society of Japan

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“…The introduction of light-controlled motion based on molecules, capable of switching between at least two stable forms, offers tremendous opportunities towards the design of photofunctional molecular systems and responsive materials 1 . Inspired by examples from Nature such as chlorophyll present in chloroplasts and retinal in mammalian eyes 2 , 3 , numerous artificial photoactive molecules have been developed to enable distinct functions such as photoactuators 4 – 8 , photoredox catalysis 9 , 10 , photopharmacology 11 , 12 , and photoluminescence (PL) 13 – 16 . Combination of multifunctional light-responsive molecules with a sophisticated molecular design like orthogonality is highly desired to boost applications that require multiple functions operating in synergy.…”

Section: Introductionmentioning

confidence: 99%

Synergistic interplay between photoisomerization and photoluminescence in a light-driven rotary molecular motor

et al. 2022

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Photoactuators and photoluminescent dyes utilize light to perform mechanical motion and undergo spontaneous radiation emission, respectively. Combining these two functionalities in a single molecule would benefit the construction of advanced molecular machines. Due to the possible detrimental interaction between the two light-dependent functional parts, the design of hybrid systems featuring both functions in parallel remains highly challenging. Here, we develop a light-driven rotary molecular motor with an efficient photoluminescent dye chemically attached to the motor, not compromising its motor function. This molecular system shows efficient rotary motion and bright photoluminescence, and these functions can be addressed by a proper choice of excitation wavelengths and solvents. The moderate interaction between the two parts generates synergistic effects, which are beneficial for lower-energy excitation and chirality transfer from the motor to the photoluminescent dye. Our results provide prospects towards photoactive multifunctional systems capable of carrying out molecular rotary motion and tracking its location in a complex environment.

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“…Polynuclear coordination complexes have been studied intensively for decades because of their distinctive chemical and physical features and broad range of applications in material science (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14). The key properties of metallo-macromolecules depend on their molecular structures, including both the local structures around metals and global orientation of peripheral ligand backbones.…”

Section: Introductionmentioning

confidence: 99%

Metal atom–guided conformational analysis of single polynuclear coordination molecules

et al. 2021

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Microscopic observation of single molecules is a rapidly expanding field in chemistry and differs from conventional characterization techniques that require a large number of molecules. One of such form of single-molecule microscopy is high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), which is especially suitable for coordination compounds because of its atomic number–dependent contrast. However, to date, single-molecule observations using HAADF-STEM has limited to simple planar molecules. In the present study, we demonstrate a direct structural investigation of nonplanar dendronized polynuclear Ir complexes with subnanometer resolution using Ir as an atomic label. Decreasing the electron dose to the dendrimer complexes is critical for the single-molecule observation. A comparison with simulated STEM images of conformational isomers is performed to determine the most plausible conformation. Our results enlarge the potential of electron microscopic observation to realize structural analysis of coordination macromolecules, which has been impossible with conventional methods.

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A single-stranded coordination copolymer affords heterostructure observation and photoluminescence intensification

Abstract: A single-stranded coordination copolymer is subject to copolymer structure visualization by ambient AFM and photoluminescence enhancement.

Cited by 11 publications

References 54 publications

Nanoarchitectonics for Coordination Asymmetry and Related Chemistry

Nanoarchitectonics for Coordination Asymmetry and Related Chemistry

Synergistic interplay between photoisomerization and photoluminescence in a light-driven rotary molecular motor

Metal atom–guided conformational analysis of single polynuclear coordination molecules

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