Rolling Up Gold Nanoparticle-Dressed DNA Origami into Three-Dimensional Plasmonic Chiral Nanostructures

Shen, Xuehui; Chen, Song; Wang, Jin‐Ye; Shi, Dangwei; Wang, Zhengang; Liu, Na; Ding, Baoquan

doi:10.1021/ja209861x

Cited by 392 publications

(411 citation statements)

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“…The absorption spectra of pristine Ag/AgCl @ chiral TiO 2 nanofibers at 200-350 nm can be attributed to the characteristic absorption of the AgCl semiconductor [29] and of TiO 2 , while the response in the visible-light region (400-800 nm) results from the creation of surface plasmon resonance [30] (Fig. 5a).…”

Section: Effect Of Anionsmentioning

confidence: 99%

Mechanism and experimental study on the photocatalytic performance of Ag/AgCl @ chiral TiO2 nanofibers photocatalyst: The impact of wastewater components

Wang

Puma

et al. 2015

Journal of Hazardous Materials

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Section: Effect Of Anionsmentioning

confidence: 99%

Mechanism and experimental study on the photocatalytic performance of Ag/AgCl @ chiral TiO2 nanofibers photocatalyst: The impact of wastewater components

Wang

Puma

et al. 2015

Journal of Hazardous Materials

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“…26,27 Optical chirality in the visible spectral range is one of the most important pursuits in that it generally does not occur in natural chiral molecules. Recent seminal work was carried out by organizing gold spherical nanoparticles in a helical staircase on a DNA origami bundle.…”

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confidence: 99%

3D plasmonic chiral colloids

et al. 2014

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3D plasmonic chiral colloids are synthesized through deterministically grouping of two gold nanorod AuNRs on DNA origami. These nanorod crosses exhibit strong circular dichroism (CD) at optical frequencies which can be engineered through position tuning of the rods on the origami. Our experimental results agree qualitatively well with theoretical predictions.The asset of DNA as nature's designer toolkit for structural technology has been explored for several decades. 1-5 The excellent control over topology and superior accuracy in templated synthesis bestow DNA the most successful molecule for programmable assembly of matter on the nanoscale. 6-10 The DNA origami technique, introduced by Rothemund, 11 relies on the nanoscale folding of a single-stranded viral DNA by numerous helper strands to create arbitrary 2D or 3D shapes. [11][12][13][14][15][16][17][18] Due to the fact that each individual helper strand can be modied and extended to produce a sequence-dependent surface tag, DNA origami can serve as a template to assemble functionalized nanoparticles. [19][20][21][22][23][24] Signicant progress in DNA origami technology has been concurrent with the prompt spanning of the scope of utility and diversity of possible conjugate materials. Among them, metal nanoparticles are one of the most exciting materials, whose versatile contributions in multiple disciplines have been indisputably witnessed. 25 A metal nanoparticle supports localized surface plasmons, which are associated with the collective oscillation of the conductive electrons in the nanoparticle. The localized nature of particle plasmons enables a vast range of useful applications, including surface-enhanced optical spectroscopies and subwavelength photonic devices, as well as medical diagnostics and therapeutics.Recently, considerable effort has been directed towards DNA origami templated assembly of gold nanoparticles into assortments of functional nanostructures. 26,27 Optical chirality in the visible spectral range is one of the most important pursuits in that it generally does not occur in natural chiral molecules. Recent seminal work was carried out by organizing gold spherical nanoparticles in a helical staircase on a DNA origami bundle. 28 However, due to the weak interaction between tiny gold nanoparticles, CD of these plasmonic helices was rather small. Alternatively, AuNRs have been considered owing to their excellent optical properties and stronger oscillator strength. For example, AuNRs were assembled on DNA origami to form chiral nanostructures. 29 However, the achieved CD response was still quite weak and the induced chiral effect due to the presence of DNA was not considered.Here we demonstrate 3D plasmonic chiral colloids assembled by DNA origami. Assemblies of crossed AuNRs templated by DNA origami are dispersed in a water-based solution. In each structure, two AuNRs are assembled on the opposite surfaces of a planar DNA origami sheet, forming a 90 twisting angle (see Fig. 1). Such crossed AuNRs constitute the simplest chiral object i...

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“…[40−42] In particular, a chiral plasmonic signal is obtained using DNA-origami to organize the nanoparticles in well-defined helices with tunable pitch, separation, and handedness. [40,41] Even if the above approaches are promising allowing in-depth tunable chiral plasmonic response, introducing rapid, scalable, and economic ways for producing chiral plasmonic nano-objects is still a challenge.Here, we explore a hypothesis whether electrostatically templating cationic gold nanoparticles (AuNPs) on the surfaces of individualized anionic CNC colloidal rods with chiral twisting along their axis allows a chiral plasmonic response in the nanoscale, i.e., without the left-handed cholesteric LC phase. The question can be put also to broader conceptual contexts: 1) Can one physically bind plasmonic nanoparticles on colloidal rod-like templates, which, in spite of the inherent packing disorder still allows a relevant plasmonic signal; and 2) If the rod-like template shows chirality, can one break the nanoparticle packing symmetry to allow chiral plasmonics.…”

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confidence: 99%

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confidence: 99%

Chiral Plasmonics Using Twisting along Cellulose Nanocrystals as a Template for Gold Nanoparticles

et al. 2016

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Nanocelluloses with native crystalline internal structures have attracted considerable interest due to their plant-based origin, high mechanical properties, modifiability, and chiral liquid crystallinity, which suggest novel functional sustainable materials. [1−27] In particular, cellulose nanocrystals (CNCs) are colloidal rods, having a typical lateral dimension of 5−10 nm and length of 50−300 nm. Above a critical aqueous concentration, they exhibit lefthanded chiral nematic (cholesteric) liquid crystallinity (LC) and optical iridescence, [4][5][6] which is preserved in dried films [4,28] . It allows templating for photonic materials using inorganics, nanoparticles, polymers, and pyrolyzed carbonized matter. [10,12,16,25,26] On the other hand, the CNCs have been suggested to possess a right-handed twist along their nanorod axis to explain the left-handed twist in their chiral LC. [6] Recently, the right-handed twist of individual CNCs and nanocelluloses of three different origins was observed by cryo-electron tomography (cryo-ET), and electron and atomic force microscopy [27,29] supported by molecular dynamics simulations [30−32] .Exploiting the twisting shape along the individual CNC nanorods could allow new optical functions in the nano/colloidal scale in dilute aqueous dispersions, i.e. not limited to the chiral LC based on the inter-rod assembly involving a larger length scale. Surprisingly, such optical findings have not been reported so far.Surface plasmons, i.e. collective oscillations of the conduction electrons on metal surfaces, allow physics and applications ranging from photonic devices, sensing, and solar cells to pharmacology. [33−37] In nanoparticles (NPs) the oscillations become coupled to allow a chiral plasmonic response, provided that they are sufficiently closely positioned and assembled in a chiral manner. This manifests in circular dichroism (CD) spectroscopy, which describes the difference in absorption between left-and right-handed circularly polarized light. The chiral coupling of surface plasmons induces a bisignated CD signal with a zerocrossing at the characteristic localized surface plasmon resonance wavelength of the isolated NPs. Such a Cotton effect is either dip−peak or peak−dip, depending on the handedness of chirality. [38−42] In chiral biological molecules, such as DNA, proteins and polypeptides, the CD signal is at ultraviolet wavelengths, whereas the CD signal of helical metal nanoparticle assemblies is at the visible wavelengths. This extends the applications to e.g. in biosensing. [37] Chiral nanoparticle assemblies have been shown using helical polymers, supramolecular fibers, and DNA-based constructs as templates. [40−42] In particular, a chiral plasmonic signal is obtained using DNA-origami to organize the nanoparticles in well-defined helices with tunable pitch, separation, and handedness. [40,41] Even if the above approaches are promising allowing in-depth tunable chiral plasmonic response, introducing rapid, scalable, and economic ways for producing chiral plas...

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Rolling Up Gold Nanoparticle-Dressed DNA Origami into Three-Dimensional Plasmonic Chiral Nanostructures

Cited by 392 publications

References 39 publications

Mechanism and experimental study on the photocatalytic performance of Ag/AgCl @ chiral TiO2 nanofibers photocatalyst: The impact of wastewater components

Mechanism and experimental study on the photocatalytic performance of Ag/AgCl @ chiral TiO2 nanofibers photocatalyst: The impact of wastewater components

3D plasmonic chiral colloids

Chiral Plasmonics Using Twisting along Cellulose Nanocrystals as a Template for Gold Nanoparticles

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