Electrochemiluminescence aptasensor for diethylstilbestrol assay based on resonance energy transfer between Ag3PO4-Cu-MOF(Ⅱ) and silver nanoparticles

The Analyst ◽  
2021 ◽  
Author(s):  
Chang Su ◽  
Qingyuan Song ◽  
Ding Jiang ◽  
Chunping Dong ◽  
Xueling Shan ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Energy Transfer ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Emission Spectra ◽  
Ag Nps

In this work, a novel electrochemiluminescence (ECL) aptasensor based on resonance energy transfer (RET) effect between Ag3PO4-Cu-MOF (Ⅱ) and silver nanoparticles (Ag NPs) was proposed. The ECL emission spectra of...

Improving the Fluorescence Concentration Quenching of Porphyrin Potassium Salt by Ag Nano Colloids

2016 ◽  
Vol 16 (4) ◽  
pp. 3646-3652
Author(s):  
Ailing Yang ◽  
Ning Wang ◽  
Yujin Wang ◽  
Shunpin Li ◽  
Lele Wang ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Potassium Salt ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Concentration Quenching ◽  
Excitation Wavelength ◽  
Ag Nps ◽  
Silver Colloids ◽  
Enhancing Effect ◽  
Fluorescence Enhancing

Silver nanoparticles (NPs) with diameters less than 25 nm, and 5, 10, 15, 20-tetrakis(4-carboxy-phenyl) porphyrin potassium salt (K4TCPPS) was synthesized. By adding silver colloids into the K4TCPPS solutions, the fluorescence concentration quenching of the K4TCPPS solutions was improved between 1×10−6–5×10−4 M, depending on the size of the Ag NPs, the concentration of the K4TCPPS and the excitation wavelength. Under excitation wavelengths of 360 and 414 nm, the enhancement was in the range of 0.34–22.8, and 0.71–82.46, respectively. The enhancement increased with decreasing size of the Ag NPs. At the two highest enhancements, the concentrations of the K4TCPPS solutions were 1×10−4 and 1×10−5 M respectively, and the size of the Ag NPs was about 5 nm. The main reasons for the fluorescence enhancing effect are due to fluorescence resonance energy transfer (FRET) between K4TCPPS molecules and Ag NPs, and decreased collision quenching between free K4TCPPS molecules, and free K4TCPPS molecules with Ag NPs. Our results showed that Ag NPs with sizes of about 5 nm can effectively improve the fluorescence concentration quenching of K4TCPPS solutions. This result also suggests that it is possible to use noble metal NPs to improve fluorescence concentration quenching.

Tunable near-infrared emission of binary nano- and mesoscale GUMBOS

RSC Advances ◽  
2014 ◽  
Vol 4 (54) ◽  
pp. 28471-28480 ◽  
Author(s):  
Atiya N. Jordan ◽  
Noureen Siraj ◽  
Susmita Das ◽  
Isiah M. Warner
Keyword(s):  
Energy Transfer ◽  
Near Infrared ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Emission Spectra ◽  
Infrared Emission ◽  
Förster Resonance Energy Transfer ◽  
Near Infrared Emission ◽  
Tunable Emission ◽  
Förster Resonance

Mixtures of GUMBOS were used to form binary nanomaterials with tunable emission spectra due to Förster resonance energy transfer (FRET).

A novel fluorescence immunosensor based on Förster resonance energy transfer between nitrogen and sulfur co-doped carbon dot functionalized silica nanospheres and Au@Ag NPs

2019 ◽  
Vol 43 (3) ◽  
pp. 1424-1430 ◽  
Author(s):  
Jun-Tao Cao ◽  
Wen-Sheng Zhang ◽  
Hui Wang ◽  
Shu-Hui Ma ◽  
Yan-Ming Liu
Keyword(s):  
Energy Transfer ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Förster Resonance Energy Transfer ◽  
Functionalized Silica ◽  
Silica Nanospheres ◽  
Ag Nps ◽  
Carbon Dot ◽  
Co Doped ◽  
Förster Resonance

A fluorescence immunosensor for PSA detection was developed based on the FRET between Si/NS-CDs and Au@Ag NPs.

ONE-STEP COLLOID CHEMICAL ROUTE TO PREPARE HETEROSTRUCTURE EuSe/Ag NANOPARTICLES FOR LUMINESCENCE RESONANCE ENERGY TRANSFER SENSORS

NANO ◽  
2014 ◽  
Vol 09 (03) ◽  
pp. 1450030
Author(s):  
LIN XU ◽  
HAO CHENG ◽  
CHUANXI WANG ◽  
QUAN LIN
Keyword(s):  
Energy Transfer ◽  
Photoelectron Spectroscopy ◽  
Ag Nanoparticles ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Ag Nps ◽  
Chemical Route ◽  
Transmission Electron ◽  
Potential Applications ◽  
One Step

The heterostructure EuSe / Ag nanoparticles (NPs) were prepared through one-step colloid chemical method. Blue fluorescent EuSe NPs were prepared by amine reducing method with oleylamine (OLA) as surface stabilizer. The colloid microemulsion was formed through the mixture of AgNO 3 aqueous solution and the EuSe n-Hexane solution. On the interface, Ag + ions could be reduced to Ag NPs by OLA. Finally heterogeneous EuSe / Ag NPs were obtained. The structure and properties of EuSe NPs and EuSe / Ag NPs were characterized by photoluminescence (PL), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). The results showed that the luminescence resonance energy transfer (LRET) occurred on the interface of EuSe NPs and Ag NPs. Also it demonstrated that the linear enhanced LRET effect happened with increasing the concentration of Ag +. All these properties make our heterostructural EuSe / Ag NPs to have interesting potential applications for ions detection and biosensors.

Sign in / Sign up

Export Citation Format

Share Document