Nanoporous Gold Nanocomposites As a Versatile Platform for Plasmonic Engineering and Sensing

Overview

Journal Sensors (Basel)

Publisher MDPI

Specialty Biotechnology

Date 2017 Jun 29

PMID 28657586

Citations 7

Authors

Fusheng Zhao

Jianbo Zeng

Wei-Chuan Shih

Affiliations

Soon will be listed here.

Abstract

Plasmonic metal nanostructures have shown great potential in sensing applications. Among various materials and structures, monolithic nanoporous gold disks (NPGD) have several unique features such as three-dimensional (3D) porous network, large surface area, tunable plasmonic resonance, high-density hot-spots, and excellent architectural integrity and environmental stability. They exhibit a great potential in surface-enhanced spectroscopy, photothermal conversion, and plasmonic sensing. In this work, interactions between smaller colloidal gold nanoparticles (AuNP) and individual NPGDs are studied. Specifically, colloidal gold nanoparticles with different sizes are loaded onto NPGD substrates to form NPG hybrid nanocomposites with tunable plasmonic resonance peaks in the near-infrared spectral range. Newly formed plasmonic hot-spots due to the coupling between individual nanoparticles and NPG disk have been identified in the nanocomposites, which have been experimentally studied using extinction and surface-enhanced Raman scattering. Numerical modeling and simulations have been employed to further unravel various coupling scenarios between AuNP and NPGDs.

Citing Articles

Applications of Nanoporous Gold in Therapy, Drug Delivery, and Diagnostics.

Sondhi P, Lingden D, Bhattarai J, Demchenko A, Stine K Metals (Basel). 2024; 13(1).

PMID: 39238564 PMC: 11376205. DOI: 10.3390/met13010078.

Advancements in Nanoporous Materials for Biomedical Imaging and Diagnostics.

Parvin N, Kumar V, Mandal T, Joo S J Funct Biomater. 2024; 15(8).

PMID: 39194664 PMC: 11355545. DOI: 10.3390/jfb15080226.

Plasmonic and Hybrid Whispering Gallery Mode-Based Biosensors: Literature Review.

Manzo M, Cavazos O, Huang Z, Cai L JMIR Biomed Eng. 2024; 6(2):e17781.

PMID: 38907378 PMC: 11135208. DOI: 10.2196/17781.

A novel application of nanoporous gold to humidity sensing: a framework for a general volatile compound sensor.

Wong T, Newman R Nanoscale Adv. 2022; 2(2):777-784.

PMID: 36133239 PMC: 9418575. DOI: 10.1039/d0na00010h.

Impact of photosensitizer orientation on the distance dependent photocatalytic activity in zinc phthalocyanine-nanoporous gold hybrid systems.

Steinebrunner D, Schnurpfeil G, Kohrode M, Epp A, Klangnog K, Tapia Burgos J RSC Adv. 2022; 10(39):23203-23211.

PMID: 35520339 PMC: 9054629. DOI: 10.1039/d0ra03891a.

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