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.

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.

Fluorescence Resonance Energy Transfer between CdTe QDs and Rhodamine B in Gelatin Nanoparticles via a Two-Step Desolvation Way

2011 ◽  
Vol 396-398 ◽  
pp. 302-305
Author(s):  
Chen Gui Li ◽  
Xiao Mei Wang ◽  
Chao Ye ◽  
Yun Qing Wang ◽  
Jie Yu ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Fluorescence Resonance Energy Transfer ◽  
Rhodamine B ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
High Energy ◽  
Gelatin Nanoparticles ◽  
Cdte Qds ◽  
Transmission Electron ◽  
Fluorescence Resonance

A facile method was developed for preparation of fluorescence resonance energy transfer between CdTe QDs (donor) and rhodamine B (acceptor) in gelatin nanoparticles. The fluorescent gelatin nanoparticles embedded CdTe QDs and rhodamine B were prepared by a two-step desolvation way and characterized by UV–Vis spectrometer, spectrofluorometer, transmission electron microscope and fluorescent microscope. The prepared method allowed for short acceptor-donor separation and thus for high energy transfer efficiencies. Energy transfer efficiency (E) and distance (r) between CdTe QDs and rhodamine B were obtained to be 26.5% and 6.84 nm, respectively. The fluorescence resonance energy transfer system was proved to be formed successfully, indicating that the fluorescent gelatin nanoparticles were expected to be promising candidates for biological imaging studies.

scholarly journals One Pot Bio-Synthesis of Palladium Nanoneedles and Its Bioavailability

2021 ◽  
Author(s):  
Dnyaneshwar K. Kulal ◽  
Shubham V. Pansare ◽  
Amol A. Shedge ◽  
Shhyam Khairkkar ◽  
Shraddha Y. Chhatre ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Radical Scavenging ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Critical Distance ◽  
One Pot ◽  
One Dimensional ◽  
Transmission Electron ◽  
Interaction Interaction ◽  
Electron Microscopes

Abstract Bioinorganic chemistry has achieved great importance by considering environmental and health issues. Here we present anticancer, antioxidant, good protein quencher single pot biosynthesized one dimensional palladium Nanoneedles (PdNNs) as a negative catalyst, where water plays a role of safer solvent. Needle-shaped one-dimensional PdNNs was synthesized using filamentous fungal stain of Aspergillus oryzae (biomass) was successively applied as a suppressant for the growth of human breast, colon and leukemia cancer Cell Lines. Quenching process of bovine serum albumin by PdNNs was spontaneous with hydrogen bonding and hydrophilic interaction. Interaction of protein and PdNNs showed binding constant in the range of 104 M-1 and one binding site. Forster's resonance energy transfer (FRET) theory applied to find out distance between the interaction of PdNNs and protein, where critical distance and energy transfer distance varies with change in concentrations of PdNNs 4.84 x 10−6 M to 9.69 x 10-7 M from 2.9 to 3.7 nm and 3.2 to 5.4 nm respectively. Radical scavenging method was applied to find out an antioxidant activity which of nanoneedles. Needle-shaped palladium nanoparticles and particle size found to be ̴ 3.0 nm using high-resolution transmission electron microscopes.

A turn-on upconversion fluorescence resonance energy transfer biosensor for ultrasensitive endonuclease detection

2015 ◽  
Vol 7 (18) ◽  
pp. 7474-7479 ◽  
Author(s):  
Li-Jiao Huang ◽  
Xue Tian ◽  
Jin-Tao Yi ◽  
Ru-Qin Yu ◽  
Xia Chu
Keyword(s):  
Graphene Oxide ◽  
Energy Transfer ◽  
Fluorescence Resonance Energy Transfer ◽  
Ligand Exchange ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Nuclease Activity ◽  
Upconversion Nanoparticles ◽  
Turn On ◽  
One Step

A facile one-step approach is proposed to make hydrophilic and DNA-functionalized upconversion nanoparticles through ligand exchange at the liquid–liquid interface, and an ultrasensitive and selective biosensor was designed for assaying nuclease activity and inhibition, based on FRET from the DNA-functionalized UCNPs to graphene oxide.

One-Pot Synthesis of Carbon Dots-Based Förster Resonance Energy Transfer Material and its Application in Fe3+ Detection

2017 ◽  
Vol 45 ◽  
pp. 134-141 ◽  
Author(s):  
Yong Qiang Dang ◽  
Yu Jing Zhou ◽  
Jiang Tao Cai ◽  
Guo Yang Liu ◽  
Ya Ting Zhang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Carbon Dots ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Maximum Efficiency ◽  
Step Method ◽  
One Pot ◽  
Excitation Time ◽  
One Step ◽  
Fret Efficiency

In this work, an efficient Förster resonance energy transfer (FRET) system has been prepared using carbon dots (CDs). A one-step method has been developed using β-cyclodextrin and tryptophan to synthesize the novel CT-CDs with FRET properties. The FRET was found to occur within the CT-CDs from the tryptophan moiety to the CDs. The FRET efficiency of the system increased with excitation time, reaching a maximum efficiency after 120 min. The CT-CDs were then evaluated in Fe3+ detection application, and showed selective and sensitive detection of Fe3+ over 14 other metal ions.

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...

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