Results 21 to 30 of about 16,957 (295)

Optical Studies of the Interactions CdS and CdTe Nanoparticles with a Human Serum Albumin

open access: yesФізика і хімія твердого тіла, 2017
The interaction between CdS , CdTe nanoparticles and human serum albumin (HSA) was studied by absorption and photoluminescence spectroscopy. The performed transmission electron microscopy (TEM) analysis suggests of spherical shape of nanostructures with ...
I. D. Stolyarchuk, O. A. Shporta
doaj   +1 more source

Fluorescence of Alexa fluor dye tracks protein folding. [PDF]

open access: yesPLoS ONE, 2012
Fluorescence spectroscopy is an important tool for the characterization of protein folding. Often, a protein is labeled with appropriate fluorescent donor and acceptor probes and folding-induced changes in Förster Resonance Energy Transfer (FRET) are ...
Simon Lindhoud   +4 more
doaj   +1 more source

Photophysical properties of self-aggregated porphyrin: semiconductor nanoassemblies

open access: yesInternational Journal of Photoenergy, 2006
Colloidal semiconductor nanocrystals from CdSe show photoluminescence quenching via titration with porphyrin derivatives. This quenching is an indication of the formation of nanoassemblies via surface attachment of pyridyl linker groups. As a consequence
E. Zenkevich   +5 more
doaj   +2 more sources

Study of the fluorescence quenching of 1-hydroxypyrene-3,6,8-trisulfonic acid by single-walled carbon nanotubes

open access: yesUniversitas Scientiarum, 2017
This paper presents a study of the fluorescence quenching of 1-hydroxypyrene-3,6,8-trisulfonic acid (HPTS) in the presence of single-walled carbon nanotubes (SWCNT) using a fluorescence method.
Herminsul Cano
doaj   +1 more source

Binding of caffeine with nicotinamide: A study by means of fluorescence quenching and UV-Vis spectroscopic techniques

open access: yesSt. Petersburg Polytechnical University Journal: Physics and Mathematics, 2023
In this work, the binding of caffeine (CAF) with nicotinamide (NIC) has been investigated by means of fluorescence quenching and UV-Vis spectroscopic techniques.
Gebreyohanes Ataklti Abraha   +1 more
doaj   +1 more source

Static Approach to Renormalization Group Analysis of Stochastic Models with Spatially Quenched Noise [PDF]

open access: greenJournal of Statistical Physics, 2019
A new ''static'' renormalization group approach to stochastic models of fluctuating surfaces with spatially quenched noise is proposed in which only time-independent quantities are involved. As examples, quenched versions of the Kardar-Parisi-Zhang model and its Pavlik's modification, the Hwa-Kardar model of self-organized criticality, and Pastor ...
N. V. Antonov   +2 more
openalex   +4 more sources

Quantum Ensembles of Silicon Nanoparticles: Discrimination of Static and Dynamic Photoluminescence Quenching Processes [PDF]

open access: greenThe Journal of Physical Chemistry C, 2019
Porous silicon photoluminescence is characterized by a broad emission band that displays unusually long (tens to hundreds of micro-seconds), wavelength-dependent emissive lifetimes. The photoluminescence is associated with quantum confinement of excitons in silicon nanocrystallites contained within the porous matrix, and the broad emission spectrum ...
Geoffrey Hollett   +9 more
openalex   +4 more sources

Comparative Studies on the Interaction of Cochinchinenin A and Loureirin B with Bovine Serum Albumin

open access: yesJournal of Spectroscopy, 2013
This paper describes the simple, sensitive, and effective spectrophotometric methods based on ultraviolet, fluorescence and circular dichroism for revealing the interactional mechanism of Cochinchinenin A (CA) and Loureirin B (LB) with bovine serum ...
Tianming Yang   +6 more
doaj   +1 more source

Electrochemical synthesis of Ni doped carbon quantum dots for simultaneous fluorometric determination of Fe3+ and Cu2+ ion facilely

open access: yesGreen Chemical Engineering, 2023
A novel Ni doped carbon quantum dots (Ni-CQDs) fluorescence probe was synthesized by facile electrolysis of monoatomic Ni dispersed porous carbon (Ni–N–C).
Siyuan Sun   +6 more
doaj   +1 more source

Highly selective and sensitive fluorescent chemosensor for femtomolar detection of silver ion in aqueous medium

open access: yesSensing and Bio-Sensing Research, 2015
The chemical sensing for the trace level detection of silver ion in aqueous solution still remains a challenge using simple, rapid, and inexpensive method. We report that thionine can be used as a fluorescent probe for the detection of Ag+ ion.
Abraham Daniel Arulraj   +4 more
doaj   +1 more source

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