High-sensitivity refractive index of Au@Cu<sub>2−x</sub>S core–shell nanorods

Cao, Pengfei; Chen, Huizhen; Zhang, Hailong; Cheng, Lin; Niu, Tiaoming

doi:10.1039/c8ra07711h

Cited by 10 publications

(8 citation statements)

References 40 publications

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“…The LSPR of a Au NR tends to be more sensitive to the change in the refractive index of the surrounding medium close to the surface of the NR. Au NRs with different surfactants or coatings will experience different plasmon shifts. ,, …”

Section: Plasmonic Properties Based On Classical Electromagnetismmentioning

confidence: 99%

“…Au NRs with different surfactants or coatings will experience different plasmon shifts. 392,813,814 Apart from the LSPR wavelengths of Au NRs, the line widths of the plasmon resonance modes are also of importance. The full width at half-maximum (fwhm) is usually invoked as a quantitative measure of the line width of a plasmon mode.…”

Section: Plasmonic Properties Based On Classicalmentioning

confidence: 99%

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Gold Nanorods: The Most Versatile Plasmonic Nanoparticles

et al. 2021

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Gold nanorods (NRs), pseudo-one-dimensional rod-shaped nanoparticles (NPs), have become one of the burgeoning materials in the recent years due to their anisotropic shape and adjustable plasmonic properties. With the continuous improvement in synthetic methods, a variety of materials have been attached around Au NRs to achieve unexpected or improved plasmonic properties and explore state-of-the-art technologies. In this review, we comprehensively summarize the latest progress on Au NRs, the most versatile anisotropic plasmonic NPs. We present a representative overview of the advances in the synthetic strategies and outline an extensive catalogue of Au-NR-based heterostructures with tailored architectures and special functionalities. The bottom-up assembly of Au NRs into preprogrammed metastructures is then discussed, as well as the design principles. We also provide a systematic elucidation of the different plasmonic properties associated with the Au-NR-based structures, followed by a discussion of the promising applications of Au NRs in various fields. We finally discuss the future research directions and challenges of Au NRs.

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Section: Plasmonic Properties Based On Classical Electromagnetismmentioning

confidence: 99%

Section: Plasmonic Properties Based On Classicalmentioning

confidence: 99%

Gold Nanorods: The Most Versatile Plasmonic Nanoparticles

et al. 2021

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“…The effects of the shell-thickness to core− radius ratio have been shown to have more influence on the refractive index sensitivity than the aspect ratio of Au NRs (Figure 5C). 65 The spectral response of the Au NRs shows the appearance of the transverse and longitudinal surface plasmon resonance bands. After the deposition of copper chalcogenide, in addition to the two resonance peaks of the Au NRs core, one more intense and broader band in the NIR region appeared.…”

Section: Regioselective Overgrowth Ofmentioning

confidence: 99%

“…Optimization of the shell domain may be critical for certain applications. The effects of the shell-thickness to core–radius ratio have been shown to have more influence on the refractive index sensitivity than the aspect ratio of Au NRs (Figure C) …”

Section: Dual Plasmonic Hybrid Nanoarchitectures With Tunable Composi...mentioning

confidence: 99%

Smart Design of Noble Metal–Copper Chalcogenide Dual Plasmonic Heteronanoarchitectures for Emerging Applications: Progress and Prospects

Іванченко

Jing

2023

Chem. Mater.

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Dual plasmonic metal–semiconductor heteronanostructures have been actively investigated due to their outstanding functional characteristics arising from the merging of two materials. In this review, the synthetic approaches, various designs, enhanced properties, and prospective applications of noble metal–nonstoichiometric copper chalcogenide nanosystems are summarized. The tunable size, shape, structure type (solid or hollow), composition, and doping level of the constituents produce several configurations of heteronanocomposites reported here. The colloidal synthetic approaches for the fabrication of dual plasmonic nanomaterials with controllable plasmonic properties are presented as well. The unique features of dual plasmonic nanostructures show synergistic and plasmon resonance coupling effects and enhanced light–matter interactions, which cannot be simply assigned to the mixture of pristine materials. Dual plasmonic hybrid nanosystems are promising candidates for enhanced photocatalysis, photothermal cancer therapy, improved sensing, photovoltaic devices, and upconversion luminescence. In conclusion, a brief outlook of the identified challenges in the area of dual plasmonic noble metal–vacancy-doped copper chalcogenide nanomaterials to be addressed in the nearest future is provided.

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“…Among these, Cu 2‑ x S emerged as a family of technologically important p-type multifunctional semiconductors. The copper vacancies allow Cu 2‑ x S members to exist in different phases, including chalcocite (Cu 2 S), djurleite(Cu 1.96 S), digenite (Cu 1.8 S), and covellite (CuS), allowing the wide variation of optical and electrical properties, leading to promising applications in optoelectronic devices, photocatalysis, sensors, battery electrodes, and thermoelectric devices. − The band gap ( E g ) of Cu 2‑ x S depends on x . The minimum E g equals 1.2 eV attained by Cu 2 S, while the maximum E g equals 2 eV attained by CuS .…”

Section: Introductionmentioning

confidence: 99%

Ex-Situ Study on the Evolution of Cubic Cu_1.8S Nanowires and Nanobelts with Two-Dimensional Multivariant Superlattices by Cation Exchange

2021

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We explore a facile and unique approach to produce low-dimensional Cu1.8S nanostructures of nanowires and nanobelts with variable microstructure by cation exchange (CE) reactions, including different crystal structures, multivariant superlattices, and porous morphology. Prior to deriving Cu1.8S nanostructures by CE reactions with Cu at an optimum temperature of 300 °C, one-dimensional (1D) ZnS nanostructures are synthesized as templates via the vapor–liquid–solid (VLS) method. Extensive characterization by transmission electron microscopy (TEM) equipped with selected-area electron diffraction (SAED) is employed to investigate the formation mechanism of the Cu1.8S nanostructures. The experimental strategy and the proposed underlying mechanism allow for essential insights into the microscopic pathways of CE. Our approach provides a unique facile method for designing compound nanomaterials with unique microstructural features for futuristic nanodevice applications.

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High-sensitivity refractive index of Au@Cu_2−xS core–shell nanorods

Abstract: A high refractive index sensitivity of Au@Cu2−xS core–shell nanorods working in the near-infrared is theoretically demonstrated.

Cited by 10 publications

References 40 publications

Gold Nanorods: The Most Versatile Plasmonic Nanoparticles

Gold Nanorods: The Most Versatile Plasmonic Nanoparticles

Smart Design of Noble Metal–Copper Chalcogenide Dual Plasmonic Heteronanoarchitectures for Emerging Applications: Progress and Prospects

Ex-Situ Study on the Evolution of Cubic Cu_1.8S Nanowires and Nanobelts with Two-Dimensional Multivariant Superlattices by Cation Exchange

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High-sensitivity refractive index of Au@Cu2−xS core–shell nanorods

Abstract: A high refractive index sensitivity of Au@Cu2−xS core–shell nanorods working in the near-infrared is theoretically demonstrated.

Cited by 10 publications

References 40 publications

Gold Nanorods: The Most Versatile Plasmonic Nanoparticles

Gold Nanorods: The Most Versatile Plasmonic Nanoparticles

Smart Design of Noble Metal–Copper Chalcogenide Dual Plasmonic Heteronanoarchitectures for Emerging Applications: Progress and Prospects

Ex-Situ Study on the Evolution of Cubic Cu1.8S Nanowires and Nanobelts with Two-Dimensional Multivariant Superlattices by Cation Exchange

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Product

Resources

About

High-sensitivity refractive index of Au@Cu_2−xS core–shell nanorods

Ex-Situ Study on the Evolution of Cubic Cu_1.8S Nanowires and Nanobelts with Two-Dimensional Multivariant Superlattices by Cation Exchange