Template-assisted self-assembly of achiral plasmonic nanoparticles into chiral structures

Vila‐Liarte, David; Kotov, Nicholas A.; Liz‐Marzán, Luis M.

doi:10.1039/d1sc03327a

Cited by 66 publications

(66 citation statements)

References 130 publications

(197 reference statements)

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“…Recently, emerging bent-core mesogens exhibiting the B4 phase or so-called helical nanofilament (HNF) phase have been used as chiral liquid-crystalline templates for fabricating chiral plasmonic nanomaterials 44,159,[181][182][183][184][185][186][187] . For example, Lewandowski et al judiciously designed and synthesized a dimeric liquid-crystalline template (L-L), which can self-organize into the HNF phase showing hierarchical and tailorable nanostructures and drive the self-assembly of L-ligand-functionalized gold nanoparticles into ordered chiral plasmonic nanomaterials 188 .…”

Section: Chiral Nanomaterials Based On Thermotropic Liquid Crystal Te...mentioning

confidence: 99%

“…Chiral nanomaterials based on emerging soft templates have been considered as the model system for investigating their inter-particle coupling, high-order selforganized nanostructures, and responsive dynamic properties, which can bring up a variety of potential applications [38][39][40] . For example, chiral nanomaterials based on nanoscale plasmonic building blocks, i.e., chiral plasmonic nanomaterials, have been demonstrated to show novel plasmon coupling or collective plasmonic properties that are usually absent in their discrete counterparts [41][42][43][44][45][46][47] . Chiral plasmonic nanomaterials could exhibit unprecedented enhanced CD, amplified dissymmetry factor (gfactor), engineerable and dynamic chiroptical responses 41 , thus holding a great opportunity in plasmon-based technological applications, such as chiral sensing 48,49 , chirality detection [50][51][52] , surface-enhanced spectroscopies 53,54 , and beyond 55,56 .…”

Section: Introductionmentioning

confidence: 99%

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Liquid crystal-templated chiral nanomaterials: from chiral plasmonics to circularly polarized luminescence

et al. 2022

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Chiral nanomaterials with intrinsic chirality or spatial asymmetry at the nanoscale are currently in the limelight of both fundamental research and diverse important technological applications due to their unprecedented physicochemical characteristics such as intense light-matter interactions, enhanced circular dichroism, and strong circularly polarized luminescence. Herein, we provide a comprehensive overview of the state-of-the-art advances in liquid crystal-templated chiral nanomaterials. The chiroptical properties of chiral nanomaterials are touched, and their fundamental design principles and bottom-up synthesis strategies are discussed. Different chiral functional nanomaterials based on liquid-crystalline soft templates, including chiral plasmonic nanomaterials and chiral luminescent nanomaterials, are systematically introduced, and their underlying mechanisms, properties, and potential applications are emphasized. This review concludes with a perspective on the emerging applications, challenges, and future opportunities of such fascinating chiral nanomaterials. This review can not only deepen our understanding of the fundamentals of soft-matter chirality, but also shine light on the development of advanced chiral functional nanomaterials toward their versatile applications in optics, biology, catalysis, electronics, and beyond.

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Section: Chiral Nanomaterials Based On Thermotropic Liquid Crystal Te...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Liquid crystal-templated chiral nanomaterials: from chiral plasmonics to circularly polarized luminescence

et al. 2022

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“…Among the different host materials explored in the context of chiral plasmonic composite fabrication, polymers, liquid crystals (LCs) and organic gels are particularly interesting. , These composites can benefit from the synergy of plasmonic properties of NPs as well as the morphology and soft character of the template. For example, materials exhibiting stimuli-responsive PCD properties have been prepared through a directed assembly of NPs by chiral liquid crystals. , However, remote control over the structure of LCs still remains a challenge.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic Gold Nanoparticles with Intrinsic Chirality for the Efficient Fabrication of Chiral Plasmonic Nanocomposites

Kowalska

Bandalewicz

Kowalski

et al. 2022

ACS Appl. Mater. Interfaces

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The development of plasmonic nanomaterials with chiral geometry has drawn extensive attention owing to their practical implications in chiral catalysis, chiral metamaterials, or enantioselective biosensing and medicine. However, due to the lack of effective synthesis methods of hydrophobic nanoparticles (NPs) showing intrinsic, plasmonic chirality, their applications are currently limited to aqueous systems. In this work, we resolve the problem of achieving hydrophobic Au NPs with intrinsic chirality by efficient phase transfer of water-soluble NPs using low molecular weight, liquid crystal-like ligands. We confirmed that, after the phase transfer, Au NPs preserve strong, far-field circular dichroism (CD) signals, attesting their chiral geometry. The universality of the method is exemplified by using different types of NPs and ligands. We further highlight the potential of the proposed approach to realize chiral plasmonic, inorganic/organic nanocomposites with block copolymers, liquid crystals, and compounds forming physical gels. All soft matter composites sustain plasmonic CD signals with electron microscopies confirming well-dispersed nanoinclusions. The developed methodology allows us to expand the portfolio of plasmonic NPs with intrinsic structural chirality, thereby broadening the scope of their applications toward softmatter based systems.

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“…However, these fabrication techniques are either sophisticated or costly, and the whole processes are usually time-consuming. Recent studies investigated alternative fabrication approaches for plasmonic metasurfaces, including template-guided selfassembly, [41][42][43] block copolymer lithography, [44][45][46] etc. However, the patterning resolution and large-area uniformity do not agree with the demand for high-performance plasmonic metasurface-based biosensors.…”

mentioning

confidence: 99%

Template‐Electrodeposited Plasmonic Metasurfaces for High‐Sensitivity Biomolecular Detection

et al. 2022

Adv Materials Inter

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Biomolecular detection is crucially significant for the medical and healthcare industries. The plasmonic metasurface is one of the ideal sensors that can be utilized for biomolecular detection. However, how to realize the more cost‐effective fabrication of plasmonic metasurfaces has always been a research hotspot. Herein, one combines nanoimprint lithography, electrodeposition, and nanotransfer printing to fabricate the electrodeposition template with nanoscale resolution. Centimeter‐scale plasmonic metasurfaces with uniform hexagonal gold nanopillar arrays are successfully fabricated via utilizing the electrodeposition template within several minutes. The plasmonic metasurfaces exhibit comparable performance with other reported metasurfaces fabricated through conventional approaches in refractometric sensing and immunoglobulin G (IgG) biomolecular detection. The electrodeposition template can be reused more than ten times, and the performance of successive plasmonic metasurfaces fabricated using the same template is highly consistent. Moreover, the novel fabrication of flexible metasurfaces may also be of interest to many other practical applications such as structural color, surface‐enhanced Raman spectroscopy (SERS), and fluorescence enhancement.

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Template-assisted self-assembly of achiral plasmonic nanoparticles into chiral structures

Abstract: Diverse templating materials and assembly strategies can be used to induce collective optical activity on achiral plasmonic building blocks. We present the advances, applications, challenges, and prospects of plasmonic–excitonic hybrids.

Cited by 66 publications

References 130 publications

Liquid crystal-templated chiral nanomaterials: from chiral plasmonics to circularly polarized luminescence

Liquid crystal-templated chiral nanomaterials: from chiral plasmonics to circularly polarized luminescence

Hydrophobic Gold Nanoparticles with Intrinsic Chirality for the Efficient Fabrication of Chiral Plasmonic Nanocomposites

Template‐Electrodeposited Plasmonic Metasurfaces for High‐Sensitivity Biomolecular Detection

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