Enantioselective sensing by collective circular dichroism

Kim, Ryeong Myeong; Huh, Ji‐Hyeok; Yoo, SeokJae; Kim, Tae Gyun; Kim, Changwon; Kim, Hyeohn; Han, Jeong Hyun; Cho, Nam Heon; Lim, Yae‐Chan; Im, Sang Won; Im, Eunji; Jeong, Jae Ryeol; Lee, Min Hyung; Yoon, Tae–Young; Lee, Ho‐Young; Park, Q-Han; Lee, Seung-Woo; Nam, Ki Tae

doi:10.1038/s41586-022-05353-1

Cited by 79 publications

(71 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, in these studies, the synthesis parameters were studied, and it was found that Au seeds, amino acids, stabilizers, and reductants affected the formation of chiral nanostructures, and consequently, performances were diverse . Although a few studies on the chiral growth on Au seeds were remarkably conducted, ,, studies on the construction of chiral nanostructures on heterogeneous seeds are rarely reported and the heterogeneous seeds for the extensional growth might cause the morphological and characteristic diversity of hybrid chiral nanostructures. In our previous studies, we found that the ascorbic acid-reduced Au ions and the heterostructural Au nanoplasmonics were formed on the ultrasonic-exfoliated MoS 2 nanosheets .…”

Section: Introductionmentioning

confidence: 99%

Tracking the Growth of Chiral Plasmonic Nanocrystals at Molybdenum Disulfide Heterostructural Interfaces

et al. 2023

View full text Add to dashboard Cite

The way of accurately regulating the growth of chiral plasmonics is of great importance for exploring the chirality information and improving its potential values. Herein, cysteine enantiomers modulate the anisotropic and epitaxial growth of gold nanoplasmonics on seeds of exfoliated MoS 2 nanosheets. The heterostructural Au and MoS 2 hybrids induced by enantiomeric cysteine are presented with chiroptical characteristics, dendritic morphologies, and plasmonic performances. Moreover, the synthesis, condition optimization, formation mechanism, and plasmonic properties of Au and MoS 2 dendritic nanostructures are studied. The chirality characteristics are identified using the circular dichroism spectra and scanning electron microscopy. Time-resolved transmission electron microscopy and UV−vis spectra of the intermediate products captured are analyzed to confirm the formation mechanism of dendritic plasmonic nanostructures at heterostructural surfaces. The specific dendritic morphologies originate from the synergistic impacts of heterostructural MoS 2 interfaces and enantiomeric cysteine-induced anisotropic manipulation. Significantly, the developed synthesis strategy of chiral nanostructures at heterostructural interfaces is highly promising in promoting the understanding of the plasmonic function and crucial chirality bioinformation.

show abstract

Section: Introductionmentioning

confidence: 99%

Tracking the Growth of Chiral Plasmonic Nanocrystals at Molybdenum Disulfide Heterostructural Interfaces

et al. 2023

View full text Add to dashboard Cite

show abstract

“…[7][8][9][10] The plasmonic metasurfaces with chirality on the nano-and micrometer scale particularly show high sensitivity to changes in their dielectric environment making them promising materials platforms for biosensing, catalysis, photonics, and information technologies. [11][12][13][14][15][16] However, the complexity of their production hinders access to these materials…”

mentioning

confidence: 99%

“…Placing the pre-synthesized 3D chiral plasmonic elements on substrate had been also recently suggested as an alternative method using soft lithography; However, these methods are still involved with multi-step manufacturing process including nanolithography of silicon pattern as the pre-step of the soft-lithography. 15,16 Most importantly, glancing angle deposition and similar techniques do not allow in-situ control of size or handedness helical geometries over the production process to attain local photonic patterns on the same substrate.…”

mentioning

confidence: 99%

Direct Printing of Helical Metal Arrays by Circularly Polarized Light

Kim

McGlothin

Cha

et al. 2023

Preprint

View full text Add to dashboard Cite

Chiral metasurface with orthogonal nanohelical metal arrays provide strong optical rotation but demands multi-step nanofabrication at low-pressure and/or high-temperature conditions, which is incompatible with many substrates and high-throughput assessment. Submillimeter local photonic patterns with various optical polarization were also hitherto unattainable over the same substrate. Here, we demonstrate direct substrate-tolerant printing of silver nanohelicoids with a locally variable optical activity using circularly polarized light (CPL), producing centimeter-scale chiral metasurface within minutes. The light-illuminated sites on the substrate immersed in an aqueous silver ion solution are activated for heterogeneous nucleation at room temperature. Subsequent CPL-induced asymmetric site-selective deposition and self-assembly of the silver nanoparticles (NPs) sculpt the orthogonal silver helicoids at the interface as one-pot synthesis. The ellipticity and wavelength of the incident photons control the handedness and size of the printed silver helicoids, realizing on-the-fly modulation of optical polarization while printing local patterns. Processing simplicity, high polarization rotation, and fine spatial resolution of the light-driven printing can provide a pathway to the sustainable production of chiral plasmonic metasurfaces, accelerating the development of chiral photonics for health and information technologies.

show abstract

“…For instance, the thalidomide tragedy demonstrated that any drug that manifests in enantiomers (mirror pairs of chiral molecules) must be considered as two different drugs whose efficacy and side effects must be treated and determined separately [5]. Consequently, detecting and characterizing enantiomers has been of utmost relevance in the biomedical and pharmaceutical industries [6][7][8]. Besides its geometry, another feasible way to infer the chirality of an object is based on its interactions with chiral light.…”

mentioning

confidence: 99%