Liquid crystals from star‐like clusto‐supramolecular macromolecules

Li, Wen; Wu, Lixin

doi:10.1002/pi.4733

Cited by 23 publications

(21 citation statements)

References 93 publications

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“…[14] These nanosized polyanionic oxoclusters have been considered as ideal models for understanding the selfassembly process of liquid crystalline organic-inorganic hybrids because of their discrete structural character. [15] POMs are also emerging in areas related to energy conversion/storage and information technology owing to their remarkable electron reservoir properties. [16] The formation of POM-based mesomorphic materials has been mostly realized by ion exchange reactions with mesogenic cations, yielding surfactantencapsulated POMs.…”

Section: Introductionmentioning

confidence: 99%

Photoactive Organic/Inorganic Hybrid Materials with Nanosegregated Donor–Acceptor Arrays

et al. 2021

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The synthesis of the first mesogenic donor‐acceptor polyoxometalate (POM)‐based hybrid is herein described. The structural and electronic properties of the hybrid compound were evaluated through combination of small‐ and wide‐angle X‐ray scattering, optical microscopy, electrochemistry and photoluminescence. In the solid state, the compound behaves as a birefringent solid, displaying a lamellar organization in which double‐layers of POMs and bis(thiophene)thienothiophene organic donors alternate regularly. Noticeably, the sub‐unit organizations in the composite are similar to that observed for the individual POM and organic donor precursors. Photophysical studies show that in the hybrid, the fluorescence of the organic donor unit is considerably quenched both in solution and in the solid state, which is attributed to occurrence of intramolecular charge‐separated state.

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Section: Introductionmentioning

confidence: 99%

Photoactive Organic/Inorganic Hybrid Materials with Nanosegregated Donor–Acceptor Arrays

et al. 2021

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“…[18,19] The polyanionic feature of PMs allows them to interact with many positively charged molecules, resulting in various nanostructures and functionalm aterials. [20][21][22] Among them,t he multivalent electrostatic interactions between PM clusters and cationic proteinso rp eptides are particularly attractive in terms of the exploration of potential bio-applications, such as selectively precipitatingp rion virus, [23] affecting the activity of enzymes, [24] inhibiting the 1D self-assembly of disease-relateda myloid polypeptides, [25] and controlling the hydrolytic cleavage of protein or peptide chains. [26] We have re-cently demonstrated that Keggin-types ilicotungstic acid( PM-3, see Figure 1a)c an drive the self-assembly of facial-like cationic peptide (L1, Figure 1b)i nto uniform nanofibers in aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Engineering the Ionic Self‐Assembly of Polyoxometalates and Facial‐Like Peptides

et al. 2016

Chemistry A European J

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The self-assembly behavior of polyoxometalates (PMs) and facial-like cationic peptides carrying lysine residues were systematically investigated. Circular dichroism and UV/Vis spectra demonstrated that the multivalent electrostatic attractions between polyanionic PMs and short peptides with protonated lysine residues initiated the conformational transition of peptide molecules from random-coil to β-sheet state, and subsequently the co-assembly. TEM and atomic force microscopy (AFM) measurements showed that uniform nanofibers formed with decreasing size of the PMs or increasing the intermolecular forces of the peptides, such as through hydrogen-bonding, hydrophobic, and/or π-π interactions. Additionally, the stability of the nanostructures can be improved by rational suppression of the electrostatic repulsion of the shell peptides covering the surface of the nanostructures. These results provide new insight into understanding the ionic self-assembly of peptides and PMs and controlling their final morphology.

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“…A considerable amount of research has been undertaken to control the shapes and sizes of supramolecular nanostructures with potential applications in fields such as materials science, molecular electronics and biomimetic chemistry . Rod–coil molecules have a strong tendency to self‐assemble into diverse supramolecular nanoscale structures .…”

Section: Introductionmentioning

confidence: 99%

Three‐dimensional crystalline supramolecular nanostructures from self‐assembly of rod–coil molecules incorporating lateral carboxyl group in the middle of the rod segment

Yang

Cheng-fan

et al. 2015

Polymer International

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We report the synthesis and self-assembling behaviour of coil-rod-coil molecules 1a-1c and 2a-2c, which incorporate lateral carboxyl or ester groups in the middle of the rod segment. The self-assembling behaviour of these molecules was investigated in the bulk using differential scanning calorimetry, polarised optical microscopy and small-angle X-ray scattering. Our results reveal that hydrogen bonds strongly influence the self-assembling behaviour of rod-like building blocks. Molecules 1a-1c, which incorporate carboxyl groups in the middle of rod segments, self-assemble into two-dimensional (2-D) columnar, three-dimensional (3-D) body-centred tetragonal and 3-D hexagonal close-packed assemblies in the crystalline state. However, molecules 2a-2c, which contain ester groups in the centre of rod segments, self-assemble into unexpected lamellar, hexagonal perforated lamellar and 2-D columnar nanostructures in the bulk, indicating that hydrogen bonds impede intermolecular stacking in this rod-coil system.

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Liquid crystals from star‐like clusto‐supramolecular macromolecules

Abstract: Clusto‐supramolecular liquid crystals (LCs) can be designed through attaching organic ligands onto the surface of inorganic nanoclusters, in which the ligands form the arms in star‐like supramolecular macromolecules.

Cited by 23 publications

References 93 publications

Photoactive Organic/Inorganic Hybrid Materials with Nanosegregated Donor–Acceptor Arrays

Photoactive Organic/Inorganic Hybrid Materials with Nanosegregated Donor–Acceptor Arrays

Engineering the Ionic Self‐Assembly of Polyoxometalates and Facial‐Like Peptides

Three‐dimensional crystalline supramolecular nanostructures from self‐assembly of rod–coil molecules incorporating lateral carboxyl group in the middle of the rod segment

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