Functional Droplets Stabilized by Interfacially Self‐Assembled Chiral Nanocomposites

Zhang, Fenghua; Zhang, Zongze; Liu, Rongjuan; Wei, Jingjing; Yang, Zhijie

doi:10.1002/anie.202206520

Cited by 5 publications

(5 citation statements)

References 62 publications

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“…However, the left-handed DLNTs (SOBU(333 K)) can drive the winding of Au5 NP assemblies into the right-handed structures with inverted helicity and vice versa. Furthermore, the intensity of the chiral plasmonics is highly associated with the size of the Au NPs, and larger-sized Au NPs are expected to produce stronger CD signals with an enhanced plasmonic coupling effect. , Indeed, when Au5 NPs were replaced with Au7 NPs, similar hierarchically assembled tubular nanocomposites (zigzag/DLNTs/HCP) were produced (Figure S19). Interestingly, CD spectra of these nanocomposites based on Au7 NPs also show a bisignate peak-dip shape with markedly higher intensities (in terms of millidegrees) than that of the nanocomposites based on Au5 NPs (Figure j).…”

Section: Resultsmentioning

confidence: 99%

Controlled Hierarchical Self-Assembly of Nanoparticles and Chiral Molecules into Tubular Nanocomposites

Cheng

Zhang

et al. 2023

J. Am. Chem. Soc.

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In this work, we show how the kinetics of molecular self-assembly can be coupled with the kinetics of the colloidal self-assembly of inorganic nanoparticles, which in turn drives the formation of several distinct hierarchically assembled tubular nanocomposites with lengths over tens of micrometers. These colloidal nanoparticles primarily serve as "artificial histones," around which the asassembled supramolecular fibrils are wound into deeply kinetically trapped singlelayered nanotubes, which leads to the formation of tubular nanocomposites that are resistant to supramolecular transformation thermally. Alternatively, when these nanoparticles are aggregated prior to the event of molecular self-assembly, these asformed nanoparticle "oligomers" would be encapsulated into the thermodynamically favored double-layer supramolecular nanotubes, which enables the non-closepacking of nanoparticles inside the nanotubes and results in the nanoparticle superlattices with an open channel. Furthermore, increasing the amounts of nanoparticles enables the assembly of nanoparticles into pseudohexagonal superlattices at the external surface in a sequential fashion, which ultimately drives the formation of triple-layered hierarchically assembled tubular nanocomposites. Importantly, the sense of helicity transfers from the supramolecular nanotubes to the pseudo nanoparticle superlattices with a chiral vector of (2, 9). Our findings represent a strategy for controlling the hierarchical assembly bridging supramolecular chemistry to the inorganic solids to realize the complexity by design.

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Section: Resultsmentioning

confidence: 99%

Controlled Hierarchical Self-Assembly of Nanoparticles and Chiral Molecules into Tubular Nanocomposites

Cheng

Zhang

et al. 2023

J. Am. Chem. Soc.

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“…CPL-Active Plasmonic Hybrid Materials: CPL reflects the chiral information of chiral materials in excited states, and its applications span a wide range of fields such as information encryption, photonics, digital holography, spin electronic devices, and pharmacology. A large number of CPL-active inorganic nanomaterials have been developed such as QDs, [130] perovskites, [131] and rare earth materials. [132] Despite this progress, there remains a challenge in constructing chiral luminescent materials with strong asymmetry factors.…”

Section: Enriching Chiral Plasmonic Hybrid Materials With Special Fun...mentioning

confidence: 99%

Chiral Plasmonic Hybrid Nanostructures: A Gateway to Advanced Chiroptical Materials

Tan,

Fu,

Gao

et al. 2023

Advanced Materials

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Chirality introduces a new dimension of functionality to materials, unlocking new possibilities across various fields. When integrated with plasmonic hybrid nanostructures, this attribute synergizes with plasmonic and other functionalities, resulting in unprecedented chiroptical materials that push the boundaries of the system's capabilities. Recent advancements have illuminated the remarkable chiral light–matter interactions within chiral plasmonic hybrid nanomaterials, allowing for the harnessing of their tunable optical activity and hybrid components. These advancements have led to applications in areas such as chiral sensing, catalysis, and spin optics. Despite these promising developments, there remains a need for a comprehensive synthesis of the current state‐of‐the‐art knowledge, as well as a thorough understanding of the construction techniques and practical applications in this field. This review begins with an exploration of the origins of plasmonic chirality and an overview of the latest advancements in the synthesis of chiral plasmonic hybrid nanostructures. Furthermore, representative emerging categories of hybrid nanomaterials are classified and summarized, elucidating their versatile applications. Finally, the review engages with the fundamental challenges associated with chiral plasmonic hybrid nanostructures and offer insights into the future prospects of this advanced field.

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“…18 But such chiral templating highly depends on the intermolecular interaction between the chiral templates and NPs, which greatly determines the induced asymmetry factor of the chiral NP assemblies. 19,20 Hence, it remains a challenging task to rationalize the affinity between the chiral templates and the NPs.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Nature uses the molecular asymmetry to create biomolecular assemblies through fine-tuning of multiple noncovalent interactions, which is essential to the operation of molecular machines or the functionality macroscopically. − Inspired by biomolecular systems, chemists have created a variety of chiral molecular/supramolecular systems aiming to reveal principles about how to design and assemble functional molecular systems with increasing complexity. − Despite the good understanding of the chirality at the molecular/supramolecular level, the study of chirality at the nanoscale, such as chiral inorganic nanostructures, is still in its infancy and, an important challenge remainshow the chirality at the molecular level can be translated to asymmetry at the nanoscale. − One practical approach to connect the molecular chirality to inorganic nanoparticles (NPs) is to functionalize the NPs with chiral organic ligands to render individual NP chiral atomically, which, however, is limited by the specific covalent/coordinating bonding between NPs and chiral ligands. − These limitations can be overcome by chiral templating where the asymmetric features of the templates can be well imprinted into the NP assemblies . But such chiral templating highly depends on the intermolecular interaction between the chiral templates and NPs, which greatly determines the induced asymmetry factor of the chiral NP assemblies. , Hence, it remains a challenging task to rationalize the affinity between the chiral templates and the NPs.…”

Section: Introductionmentioning

confidence: 99%

Large Optical Asymmetry in Silver Nanoparticle Assemblies Enabled by CH−π Interaction-Mediated Chirality Transfer

et al. 2023

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Transfer of asymmetry from the molecular system to the other distinct system requires appropriate chemical interactions. Here, we show how the CH−π interaction, one of the weakest hydrogen bonds, can be applied to transfer the asymmetry from π-conjugated chiral molecules to the assemblies of plasmonic Ag nanoparticles, where the aliphatic chains of chiral molecules and the polystyrene chains grafted on Ag nanoparticles are served as the hydrogen donor and acceptor, respectively. The optical asymmetry g-factor of the chiral assemblies of plasmonic nanoparticles is strongly dependent on the molecular weight of the polystyrene ligand, the core structure of the molecule, and the aliphatic chain length of the chiral molecule. Importantly, we explore a molecular mixing strategy to enhance the asymmetry g-factor of chiral molecular assemblies, which consequently promotes the g-factor of chiral plasmonics efficiently, reaching a high value of ∼0.05 under optimal conditions. Overall, we rationalize the chirality transfer from chiral molecules to inorganic nanoparticles, providing the guidance for structural design of chiral nanocomposites with a high g-factor.

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Functional Droplets Stabilized by Interfacially Self‐Assembled Chiral Nanocomposites

Cited by 5 publications

References 62 publications

Controlled Hierarchical Self-Assembly of Nanoparticles and Chiral Molecules into Tubular Nanocomposites

Controlled Hierarchical Self-Assembly of Nanoparticles and Chiral Molecules into Tubular Nanocomposites

Chiral Plasmonic Hybrid Nanostructures: A Gateway to Advanced Chiroptical Materials

Large Optical Asymmetry in Silver Nanoparticle Assemblies Enabled by CH−π Interaction-Mediated Chirality Transfer

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