Au-Ag Alloy Nanoshuttle Mediated Surface Plasmon Coupling for Enhanced Fluorescence Imaging

Article Chemistry, Analytical

Label-Free Fluorescent Nanofilm Sensor Based on Surface Plasmon Coupled Emission: In Situ Monitoring the Growth of Metal-Organic Frameworks

Lin-Tao Xu et al.

Summary: We proposed a universal label-free fluorescent nanofilm sensor based on surface plasmon coupled emission (SPCE), which can be easily prepared and widely used for in situ studies, especially in nanomaterial growth processes.

ANALYTICAL CHEMISTRY (2022)

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Article Chemistry, Physical

Plasmonic Au-Ag alloy nanostars based high sensitivity surface enhanced Raman spectroscopy fiber probes

Qihang Tian et al.

Summary: In this study, Au-Ag alloy nanostars were synthesized and assembled on optical fibers to fabricate fiber probes for ultra-trace molecular detection. The fiber probes demonstrated high sensitivity and good reproducibility, making them suitable for quantitative analysis in chemistry, biology, and other fields.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

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Article Chemistry, Multidisciplinary

Sericin-Based Bio-Inspired Nano-Engineering of Heterometallic AgAu Nanocubes for Attomolar Mefenamic Acid Sensing in the Mobile Phone-Based Surface Plasmon-Coupled Interface

Seemesh Bhaskar et al.

Summary: Engineering photo-plasmonic platforms with heterometallic nanohybrids using bio-inspired methods is crucial for achieving enhanced sensitivity in fluorescence-based analytical detection. Our study presents a rational design for in situ fabrication of silver, gold, and their plasmonic hybrids using biocompatible sericin protein. The resulting nanohybrids showed tunable and amplified fluorescence emission when interfaced with the SPCE platform, demonstrating their potential for biosensing applications.

LANGMUIR (2022)

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Article Chemistry, Multidisciplinary

Plasmon Coupling Enhanced Micro-Spectroscopy and Imaging for Sensitive Discrimination of Membrane Domains of a Single Cell

Xiao-Hui Pan et al.

Summary: The novel technique of plasmon coupling enhanced micro-spectroscopy and imaging successfully discriminates basal and lateral membrane domains of a single cell, allowing for selective excitation and distinction by adjusting the incident angle of laser irradiation.

CHEMISTRY-A EUROPEAN JOURNAL (2021)

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Article Chemistry, Physical

One-pot synthesis of wavy gold-silver alloy nanoplates with tunable elemental compositions: Optical and photothermal properties

Yanyun Ma et al.

Summary: The study presents a facile synthesis method for high-purity AuAg alloy nanoplates with tunable elemental compositions, showing significant photothermal properties and excellent stability.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Chemistry, Analytical

Amplified Fluorescence by Hollow-Porous Plasmonic Assembly: A New Observation and Its Application in Multiwavelength Simultaneous Detection

Kai-Xin Xie et al.

Summary: The use of gold nanocages (AuNCs) significantly enhanced the signal of SPCE by providing superior wavelength match, enhanced electromagnetic field, and introducing new radiation channel and process, which effectively overcomes signal quenching and increases detection sensitivity.

ANALYTICAL CHEMISTRY (2021)

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Article Chemistry, Multidisciplinary

Multiarchitecture-Based Plasmonic-Coupled Emission Employing Gold Nanoparticles: An Efficient Fluorescence Modulation and Biosensing Platform

Kai-Xin Xie et al.

Summary: Surface plasmon-coupled emission (SPCE) is an efficient method based on the near-field coupling process of surface plasmons and fluorophores. By introducing different structures of gold nanoparticles (AuNPs) and adjusting various modification methods, the SPCE system achieved significant enhancement effects. The diverse enhancement effects were mainly attributed to the novel hot-spot plasmonic structure, intense electromagnetic field, plasmonic properties, and the coupled process.

LANGMUIR (2021)

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Article Nanoscience & Nanotechnology

Metal-Free, Graphene Oxide-Based Tunable Soliton and Plasmon Engineering for Biosensing Applications

Seemesh Bhaskar et al.

Summary: The study demonstrates a quest for auxiliary plasmonic materials with lossless properties by utilizing a unique plasmonic response from stratified high refractive index-graphene oxide and low refractive index-polymethyl methacrylate multistack. The platform achieved a zero-normal steering emission and directional graphene oxide plasmon-coupled emission, and showed potential for diverse biosensing applications. Experimental validation of the platform's superiority in achieving a low detection limit of human IFN-gamma was conducted, along with significant fluorescence emission enhancements on a lossless substrate using various nanoparticles, paving the way for unique light-matter interactions for next-generation plasmonic and biomedical technologies.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Biophysics

Recent advances in gold nanoparticles-based biosensors for food safety detection

Zheng Hua et al.

Summary: Gold nanoparticles are utilized as probes in developing rapid and low-cost detection methods for various contaminants and allergens in food safety, with their unique properties enabling sensitive detection through different mechanisms.

BIOSENSORS & BIOELECTRONICS (2021)

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Article Chemistry, Physical

Concentration Effect in Surface Plasmon-Coupled Phosphorescence (SPCP) Emission Engineering with Augmented S-Polarization from N-Heterocyclic Carbene Platinum(II) Complexes

Bebeto Rai et al.

Summary: The study introduces a surface plasmon-coupled phosphorescence (SPCP) technique using excimer-forming N-heterocyclic carbene platinum(II) complexes with alkyne derivatives. The research demonstrates up to 18-fold enhancement in phosphorescence emission without complex plasmonic architectures. The study also shows the alteration of dispersive behavior for these complexes and the achievement of augmented emission.

JOURNAL OF PHYSICAL CHEMISTRY C (2021)

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Review Nanoscience & Nanotechnology

Surface Plasmon-Assisted Fluorescence Enhancing and Quenching: From Theory to Application

Qiang Su et al.

Summary: The integration of surface plasmon resonance and fluorescence has led to significant improvements in surface fluorescence sensing and imaging techniques, with a focus on balancing fluorescence-enhancement efforts and fluorescence-quenching effects through surface modification design. This interdisciplinary field is of great interest to a broad readership, particularly among physical chemists, analytical chemists, and researchers in surface-based sensing and imaging studies.

ACS APPLIED BIO MATERIALS (2021)

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Article Nanoscience & Nanotechnology