One-step fabrication of wavelength-tunable luminescence of gold-silver bimetallic nanoclusters: robust performance for α-glucosidase assay

AbstractThe application of the distance velocity azimuth display (DVAD) method to the retrieval of vertical wind profiles from single-Doppler radar observations is presented in this study. It was shown that Doppler velocity observations at a constant altitude can be expressed as a single polynomial function for both linear and nonlinear wind fields in DVAD. Only a one-step least squares fitting of a polynomial function is required to obtain the vertical wind profile of a real wind field. The mathematic formulation of DVAD results in two advantages over the traditional nonlinear VAD method used for the nonlinear analysis of single-Doppler observations. First, the requirement of only one-step least squares fitting leads to robust performance when Doppler velocity observations are contaminated by unevenly distributed data noise and voids. Second, the degree of nonlinearity to properly represent a real wind field can be directly estimated in DVAD instead of being empirically determined in the traditional method. A proper nonlinear wind model for approximating the real wind field can be objectively derived using the DVAD method. The merits of DVAD as a quantitative single-Doppler analysis method were compared with the traditional method using both idealized and real datasets. Results show that the simplicity and robust performance of DVAD make it a good candidate for single-Doppler retrieval in operational use.

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Highly Chiroptical Detection with Gold–Silver Bimetallic Nanoclusters Circularly Polarized Luminescence Based on G-quartet Nanofiber Self-assembly

The Journal of Physical Chemistry C ◽

10.1021/acs.jpcc.0c06388 ◽

2020 ◽

Vol 124 (38) ◽

pp. 21094-21102

Author(s):

Zhiguang Suo ◽

Xialing Hou ◽

Jingqi Chen ◽

Xiaowei Liu ◽

Yu Liu ◽

...

Keyword(s):

Self Assembly ◽

Circularly Polarized ◽

Bimetallic Nanoclusters ◽

Gold Silver ◽

Circularly Polarized Luminescence ◽

Polarized Luminescence

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Synthesis of wavelength-tunable luminescent gold and gold/silver nanodots

Journal of Materials Chemistry ◽

10.1039/b808594c ◽

2009 ◽

Vol 19 (6) ◽

pp. 755-759 ◽

Cited By ~ 91

Author(s):

Chih-Ching Huang ◽

Hao-Ying Liao ◽

Yen-Chun Shiang ◽

Zong-Hong Lin ◽

Zusing Yang ◽

...

Keyword(s):

Wavelength Tunable ◽

Gold Silver ◽

Silver Nanodots

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A Ratiometric Fluorescent Probe Based on Carbon Dots and Bimetallic Nanoclusters for the Assay of Copper Gluconate and Copper Sulfate

NANO ◽

10.1142/s1793292021501149 ◽

2021 ◽

pp. 2150114

Author(s):

Yucong Fan ◽

Weihua Yu ◽

Yue Hu ◽

Yunwen Liao ◽

Xiaohui Jiang ◽

...

Keyword(s):

Fluorescent Probe ◽

Carbon Dots ◽

Limit Of Detection ◽

Molar Ratio ◽

Cupric Sulfate ◽

Selective Determination ◽

Bimetallic Nanoclusters ◽

One Step ◽

The One

Doping Ag-enhanced and glutathione-stabilized Au nanoclusters (GSH–Ag/AuNCs) were prepared by the one-step ultraviolet radiation combined with microwave heating method. The effects of the molar ratio of Au–Ag and different types of energy suppliers on the fluorescent performance of GSH–Ag/AuNCs were studied in detail. After that, a new ratio fluorescent probe (RF-probe) based on the mixing of GSH–Ag/AuNCs with carbon dots (CDs) was designed for sensitive and selective determination of copper gluconate (CG) and cupric sulfate (CS). For the CDs–GSH–Ag/AuNCs RF-probe, the fluorescence (FL) of CDs (at 440[Formula: see text]nm) and that of alloy nanoclusters (NCs) (at 605[Formula: see text]nm) were, respectively, unaffected and strongly quenched in the presence of CG/CS at [Formula: see text][Formula: see text]nm coming from the dynamic quenching process. Corresponding linear ranges and limit of detection (LOD) of the RF-probe for the CG/CS assay were estimated to be 0.17–6.20/0.17–5.62[Formula: see text][Formula: see text]mol/L and 16.80/15.95[Formula: see text]nmol/L, respectively. Furthermore, the proposed RF-probe was successfully used for the assays of CG in CG tablets and CG additive, and CS in infant formula and CS additive, respectively.

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Gold–silver@TiO2 nanocomposite-modified plasmonic photoanodes for higher efficiency dye-sensitized solar cells

Physical Chemistry Chemical Physics ◽

10.1039/c6cp05950c ◽

2017 ◽

Vol 19 (2) ◽

pp. 1395-1407 ◽

Cited By ~ 30

Author(s):

Su Pei Lim ◽

Yee Seng Lim ◽

Alagarsamy Pandikumar ◽

Hong Ngee Lim ◽

Yun Hau Ng ◽

...

Keyword(s):

Solar Cells ◽

High Efficiency ◽

Reduction Method ◽

Chemical Reduction ◽

Dye Sensitized Solar Cells ◽

Chemical Reduction Method ◽

Dye Sensitized ◽

Gold Silver ◽

One Step ◽

Sensitized Solar Cells

Au–Ag@TiO2 were prepared using a simple one-step chemical reduction method and used as photoanodes in high-efficiency DSSCs.

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Tiopronin protected gold-silver bimetallic nanoclusters for sequential detection of Fe3+ and ascorbic acid in serum

Microchemical Journal ◽

10.1016/j.microc.2021.107048 ◽

2022 ◽

Vol 174 ◽

pp. 107048

Author(s):

Xiupei Yang ◽

Jing Yang ◽

Maoxue Zhang ◽

Ya Wang ◽

Baowen Zhang ◽

...

Keyword(s):

Ascorbic Acid ◽

Sequential Detection ◽

Bimetallic Nanoclusters ◽

Gold Silver

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In situ formation of gold/silver bi-metal nanodots on silica spheres and evaluation of their microbicidal properties

RSC Advances ◽

10.1039/c4ra12042f ◽

2015 ◽

Vol 5 (7) ◽

pp. 5038-5045 ◽

Cited By ~ 8

Author(s):

Perumal Rameshkumar ◽

Selvam Saranya ◽

Kabilan Sujatha ◽

Ramasamy Ramaraj

Keyword(s):

Environmentally Benign ◽

Silica Spheres ◽

Synthetic Method ◽

Gold Silver ◽

One Step ◽

Step Growth ◽

In Situ Formation

An environmentally benign synthetic method of seedless and one-step growth of 2–4 nm sized gold/silver bi-metal nanodots on preformed silica spheres and their microbicidal properties with different concentrations of Au and Ag are reported.

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