Size-dependent modulation of fluorescence and light scattering: a new strategy for development of ratiometric sensing

2018 ◽  
Vol 5 (3) ◽  
pp. 454-460 ◽  
Author(s):  
Shi Gang Liu ◽  
Na Li ◽  
Lei Han ◽  
Ling Jie Li ◽  
Nian Bing Li ◽  
...  
Keyword(s):  
Light Scattering ◽  
Ratiometric Sensing ◽  
Size Dependent ◽  
New Strategy ◽  
Ratiometric Sensors

A new size-dependent modulation strategy to design ratiometric sensors is proposed by combining fluorescence and light scattering.

A new strategy for utilizing activated CH-group to construct a FRET platform for ratiometric sensing of cyanides

2019 ◽  
Vol 60 (2) ◽  
pp. 178-182 ◽  
Author(s):  
Caihui Rao ◽  
Zhongya Cao ◽  
Yayun Chen ◽  
Zheyao Li ◽  
Lu Chen ◽  
...  
Keyword(s):  
Ratiometric Sensing ◽  
New Strategy

Size-dependent light-scattering effects of nanoporous TiO2 spheres in dye-sensitized solar cells

2011 ◽  
Vol 21 (2) ◽  
pp. 532-538 ◽  
Author(s):  
In Gyoung Yu ◽  
Yong Joo Kim ◽  
Hark Jin Kim ◽  
Chongmu Lee ◽  
Wan In Lee
Keyword(s):  
Solar Cells ◽  
Light Scattering ◽  
Dye Sensitized Solar Cells ◽  
Size Dependent ◽  
Dye Sensitized ◽  
Scattering Effects ◽  
Sensitized Solar Cells

Dumbbell-like Au-Fe3O4 nanoparticles: a new nanostructure for supercapacitors

Nanoscale ◽  
2015 ◽  
Vol 7 (11) ◽  
pp. 4890-4893 ◽  
Author(s):  
Sheng Liu ◽  
Shaojun Guo ◽  
Shouheng Sun ◽  
Xiao-Zeng You
Keyword(s):  
Electron Transfer ◽  
Specific Capacitance ◽  
Fe3o4 Nanoparticles ◽  
Size Dependent ◽  
New Strategy

Monodispersed dumbbell-like Au-Fe3O4 nanoparticles (NPs) were synthesized and studied for supercapacitors. The NPs show Au/Fe3O4-size dependent capacitive behaviors with the best specific capacitance of 464 F g−1 at 1 A g−1. This capacitive enhancement is believed to arise from Au-induced increase in electron transfer across the NPs demonstrating a new strategy to enhance oxide NP capacitances.

Comparison of Optical Properties of Pyrazoline Derivative Nanoparticles

2007 ◽  
Vol 119 ◽  
pp. 39-42 ◽  
Author(s):  
Hyo Sim Kang ◽  
Sun Wha Oh ◽  
Young Soo Kang
Keyword(s):  
Optical Properties ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Fluorescence Spectroscopy ◽  
Phenyl Ring ◽  
Organic Nanoparticles ◽  
Size Dependent ◽  
Reprecipitation Method ◽  
Pyrazoline Derivative

We prepared various pyrazoline derivatives which possess dimethylamino-, ethoxy-, isopropyl-phenyl ring at the 5-position of pyrazoline. The nanoparticles of pyrazoline derivative ranging from tens to hundreds of nanometers by the reprecipitation method have been successfully prepared and their optical size-dependent properties have been investigated with UV-vis, fluorescence spectroscopy, DLS (Dynamic Light Scattering) and SEM. The size-dependent optical properties of pyrazoline organic nanoparticles have been observed in the order of dimethylamino- > ethoxy- > isopropyl- in electro-donating characters.

Size-dependent modulation of CoOOH nanoflakes light scattering for rapid and selective detection of tetracycline in milk

2018 ◽  
Vol 2 (4) ◽  
pp. 332-341 ◽  
Author(s):  
Yin Hui Wei ◽  
Xin Yu Li ◽  
Jie Gao ◽  
Jia Jun Liu ◽  
Dan Yuan ◽  
...  
Keyword(s):  
Light Scattering ◽  
Selective Detection ◽  
Size Dependent ◽  
Coooh Nanoflakes

Time-resolved light scattering by photoexcited V2O3

MRS Advances ◽  
2017 ◽  
Vol 2 (23) ◽  
pp. 1231-1236 ◽  
Author(s):  
Nardeep Kumar ◽  
Armando Rúa ◽  
Ramón Díaz ◽  
Iván Castillo ◽  
Brian Ayala ◽  
...  
Keyword(s):  
Phase Transition ◽  
Light Scattering ◽  
Vanadium Oxides ◽  
Transition Dynamics ◽  
Time Resolved ◽  
Size Dependent ◽  
Scattering Technique ◽  
Image Position ◽  
Scattering Signal ◽  
Light Scattering Technique

ABSTRACTUsing ultrafast angle-resolved light scattering technique, we were able to trigger photoinduced phase transition processes in V2O3 film grown on a glass substrate. The phase transition is caused by photoacoustic wave in the film and appears as coherent oscillations of scattering signal at various time scales. These processes strongly depend on the size of microstructures constituting the V2O3 film. One of the key findings of our study is the presence of a size dependent phase transition threshold for V2O3 microstructures, where small size structures ($\tilde <$ 0.5μm) have lowest contribution to the phase transition. The presence of this threshold can be well described by considering uneven internal strain in the films which is one of the key parameters controlling phase transition dynamics in various vanadium oxides.

A new strategy to construct a FRET platform for ratiometric sensing of hydrogen sulfide

2015 ◽  
Vol 51 (8) ◽  
pp. 1510-1513 ◽  
Author(s):  
Longwei He ◽  
Weiying Lin ◽  
Qiuyan Xu ◽  
Haipeng Wei
Keyword(s):  
Hydrogen Sulfide ◽  
Ratiometric Sensing ◽  
New Strategy

We introduce a new FRET strategy working in coordination with the ICT process to construct a ratiometric fluorescent H2S sensor.

scholarly journals pH effect on the synthesis of different size silver nanoparticles evaluated by DLS and their size-dependent antimicrobial activity

2020 ◽  
Vol 25 (4) ◽  
Author(s):  
Leiriana Aparecida Pinto Gontijo ◽  
Ellen Raphael ◽  
Daniela Pereira Santos Ferrari ◽  
Jefferson Luis Ferrari ◽  
Juliana Pereira Lyon ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Silver Nanoparticles ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Size Distribution ◽  
Colloidal Stability ◽  
Chemical Reduction ◽  
Ph Effect ◽  
Antimicrobial Properties ◽  
Size Dependent

ABSTRACT This paper reports citrate-stabilized silver nanoparticles (AgNPs) synthesized by nitrate ion chemical reduction with sodium borohydride, at different pHs (2–9). The AgNPs synthesized by this method exhibited size distribution from 5 to 249 nm, depending on pH, as determined by dynamic light scattering, and morphology spherical, as determined by transmission electron microscopy. In pH range 3–7 occurred aggregation of the nanoparticles. The size distribution depending on pH was determined by dynamic light scattering. The zeta potential was determined, and the colloidal stability was correlated with nanoparticles aggregation at different pHs. The size-dependent antimicrobial activity was evaluated for two solutions, wherein both samples exhibited antimicrobial activity, although the smallest AgNPs without agglomeration have enhanced antimicrobial properties.

Sign in / Sign up

Export Citation Format

Share Document